Thanks to RadiaCode for sponsoring this video! Use the promo code "Brainiac75" to get free shipping in addition to the exclusive Black Friday discounts currently available: https://103.radiacode.com/ A laser-based car headlight? Sounds like something from a sci-fi movie but some cars actually use LEP technology: Laser Excited Phosphor. In this video, I take a closer look at one of these headlamps. After figuring out how to light it up without destroying the laser diode, I measure how strong the used laser is. Can you guess how strong it is? I was surprised! My Patreon-page: https://www.patreon.com/Brainiac75 Other interesting videos on similar topics: TRUE YELLOW LASER or not? 25+ years wait over?: https://youtu.be/0TG7qjn5QE0 How [not] to max test a power supply!: https://youtu.be/hYLUN5zZcA8 LASER underpowered by its power supply? | First TTL/PWM Arduino attempt: https://youtu.be/WACKXAQ-lOU Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0m:00s + 13m:51s "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Loop made from the intro part by me. Time codes: 0m:46s + 10m:55s "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 2m:58s "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 Time code: 4m:58s "Floating Cities" Kevin MacLeod (incompetech.com) ISRC: USUAN1600018 Time code: 7m:37s "Ossuary 6 - Air" by Kevin MacLeod (incompetech.com) ISRC: USUAN1500048 Time code: 11m:55s "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 13m:05s "Long Note Two" Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7m:12s Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #laser #headlight #headlamp

Thanks to RadiaCode for sponsoring this video! Use my promo code "Brainiac75" for 10% discount: https://103.radiacode.com/ Microwave ovens have a magnetron that produces the microwave radiation. The magnetron needs a magnetic field from its built-in magnets to work. So what will happen if I place a very strong magnet on top of a microwave oven? Will the magnetron stop working, get stronger or just work? Let's find out! Radiacode 103 dosimeter and gamma spectrometer donated in 2023 by Radiacode.com: https://103.radiacode.com/ They have a YouTube-channel too, including a video of their new manufacturing lab in Cyprus: https://www.youtube.com/watch?v=n7EVYZ0Mf54 One of the 150x50 mm disc magnets donated back in 2017 by https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Recommended videos: My first experience with the Radiacode spectrometer (1st generation Radiacode 101): https://youtu.be/x1UZdLVlBXg Monster magnet meets subwoofer...: https://youtu.be/wWzg4wRtBkE Monster magnet meets plasma ball...: https://youtu.be/1ppPrYeXoek Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0m:01s + 17m:23s 'Darkness is Coming' Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Looped by me. Time codes: 1m:07s + 7m:08s + 7m:54s + 16m:10s 'Perspectives' Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 1m:53s + 10m:02s + 14m:27s 'Hiding Your Reality' Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time code: 4m:11s 'Ossuary 6 - Air' by Kevin MacLeod (incompetech.com) ISRC: USUAN1500048 Time code: 12m:54s 'Lightless Dawn' Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7m:25s Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #microwave #oven #magnet

Can a Class 1 laser remove hair? I was faced with this question when I found an old hair removal laser in a thrift shop. It is labeled as class 1 - the safest of all laser classes. Being sceptical, I bought the laser and will in this video test its wavelength on a spectrometer and its power on a laser power meter. Can you guess how strong it is? And is it a safe class 1? My Patreon-page: https://www.patreon.com/Brainiac75 YELLOW LASERS?!? Finally - after 25+ years of collecting!: https://youtu.be/XQnmMjYHgcM You can see infrared?!? Failing safety glasses: https://youtu.be/r3V5PzTDP7E MISLABELED LASER | Power and wavelength?: https://youtu.be/i9WS7Jo2TAY Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0m:01s + 13m:47s 'Martian Cowboy' Kevin MacLeod (incompetech.com) ISRC: USUAN1100349 Time codes: 0m:56s + 10m:26s 'Perspectives' Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 2m:33s 'Ossuary 6 - Air' Kevin MacLeod (incompetech.com) ISRC: USUAN1500048 Time code: 4m:34s 'Hiding Your Reality' Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time code: 6m:47s 'Neo Western' Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time code: 8m:41s 'Energizing' Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 6:20 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #laser #hair

I want to test my expensive set of rare earth elements. Are they the real deal or have I been fooled? But I want to test the metals without breaking the sealed glass/argon tubes they are stored in for protection. What to do? Time to bring out my strongest magnet and test the rare-earth metals in part 7 of my classic series: Exotic Elements vs. Magnet! Is the rare-earth set genuine? Let's find out! One of the 150x50 mm disc magnets donated back in 2017 by https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 What element is attracted the most to a magnet?: https://youtu.be/COWNJghBs3Y Playlist for Exotic Elements vs. Magnet series: https://www.youtube.com/playlist?list=PLiAlc6pI18dWJT9NNRgGxJF6yHgEElwmU SD Card vs. Radioactivity | Data Loss?: https://youtu.be/vx-lcFD3-BE Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0m:01s + 11m:10s 'Darkness is Coming' Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Looped by me. Time codes: 1m:02s + 7m:28s 'Perspectives' Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 3m:43s 'Myst on the Moor' Kevin MacLeod (incompetech.com) ISRC: USUAN1600007 Time code: 5m:55s + 11m:58s 'Equatorial Complex' Kevin MacLeod (incompetech.com) ISRC: USUAN2300008 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 6m:58s Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #magnet #elements #lanthanides

Time to power up my most expensive lamp. Due to a wrong delivery, I have three power options to choose between. In this video, I test and compare how well they light up the low-pressure sodium-vapor Philips SOX 135W lamp. Which is better? The ballasts BSX 91, BSX 135 or the leak transformer L4135? One of them is not really meant for a 135W lamp, but it is the most modern and perhaps the best option? Let's find out in the most comprehensive test I have ever performed! My Patreon-page: https://www.patreon.com/Brainiac75 Direct link to Patreon post with data files from the ballast tests: https://www.patreon.com/posts/how-bad-is-91w-108923263 Recommended videos: THIS LAMP SOXs! "Yellow" tech of bright metal vapor lamp. Beats modern LEDs in brightness per watt?: https://youtu.be/l9Gv5FVE-0c Hidden Hazards of Halogen Lamps: https://youtu.be/qNpF8rB5sNc FAULTY Flicker-Flame Light Bulb? Amazing in slow-motion!: https://youtu.be/muzBK-6Xzn4 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0m:01s + 3m:41s + 10m:54s 'Hiding Your Reality' Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time codes: 1m:01s + 12m:39s 'Perspectives' Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 6m:44s 'Fluidscape' Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 7m:56s 'Ossuary 6 - Air' by Kevin MacLeod (incompetech.com) Part from 2:34 into the music track. ISRC: USUAN1500048 Time code: 14m:49s 'Adding the Sun' Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 12m:10s Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #SOX #LPS #ballast

Why does a flicker-flame lamp flicker? And why is the beautiful gas discharge not taking the shortcut between the closely spaced electrodes? In an attempt to figure out how such a specialized light bulb works, I will test my only flicker-flame lamp. One that seems faulty, but still turns out to be stunning when slowed way down. A marvelous demonstration of Paschen's Law. Let's take a closer look at the beauty of imperfection! My Patreon-page: https://www.patreon.com/Brainiac75 Power of Plasma Balls Visualized | Don't wear a ring... : https://youtu.be/TKv0XgjdhOU Low-pressure sodium vapor lamp beats LEDs?: https://youtu.be/l9Gv5FVE-0c Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0m:01s + 6m:56s 'Music for Manatees' Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time codes: 0m:56s + 5m:57s + 9m:41s 'Perspectives' Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 3m:05s 'Neo Western' Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time code: 4m:54s 'Impact Lento' Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 10m:10s 'Adding the Sun' Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 6m:29s Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #flicker #lamp #lightbulb

Having efficient light bulbs is great. It saves energy which gives you lower electricity bills and lower impact on the environment. So why have we stopped using the very energy-efficient low-pressure sodium vapor lamps? In this video, I take a closer look at this vintage technology and compare it to modern, state-of-the-art LEDs. How do they compare in luminous efficacy and color rendering index? My Patreon-page: https://www.patreon.com/Brainiac75 Recommended videos: Crazy difference between 5W LASER and 5W LED!: https://youtu.be/vUwP7SY0Ajs Yellow Lasers?!? Finally - after 25+ years of collecting!: https://youtu.be/XQnmMjYHgcM LASER underpowered by its power supply? | First TTL/PWM Arduino attempt: https://youtu.be/WACKXAQ-lOU Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0m:01s 'Long Note Two' Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 Time codes: 1m:00s + 7m:43s 'Perspectives' Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 1m:51s + 9m:57s 'Fluidscape' Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 5m:01s 'Lightless Dawn' Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 5m:37s + 11m:30s 'Ossuary 6 - Air' by Kevin MacLeod (incompetech.com) Parts from 0m:00s + 2m:34s into the music track. ISRC: USUAN1500048 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 7m:18s Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #SOX #LPS #lamp

What happens if you wear a finger ring while touching a plasma globe? What if you jump while touching the plasma globe? Why are the filaments attracted to us? Is grounding - electrical earthing - needed to attract the filaments of the plasma ball? So many questions to answer but I will give it a try in this video. Luckily, plasma balls are relatively safe sources for high-voltage experiments :) My Patreon-page: https://www.patreon.com/Brainiac75 Video tips: Monster magnet meets plasma ball...: https://youtu.be/1ppPrYeXoek Upgrading fiber optic lamps to laser brightness: https://youtu.be/5uoKlGzmDgg Mystery RADIOACTIVE source | Can we identify it?: https://youtu.be/CLa0GvHhgrY Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0m:01s 'Darkness is Coming' Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time codes: 0m:59s + 7m:14s + 9m:10s 'Perspectives' Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 3m:12s 'Floating Cities' Kevin MacLeod (incompetech.com) ISRC: USUAN1600018 Time code: 5m:48s 'Redletter' Kevin MacLeod (incompetech.com) ISRC: USUAN1100714 Time code: 8m:17s 'Bathed in the Light' Kevin MacLeod (incompetech.com) ISRC: USUAN1100308 Time code: 11m:45s 'Adding the Sun' Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 6m:45s Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #plasma #highvoltage #spark

Handheld, yellow lasers do not exist. That is my experience after I last year tried three that were advertised to emit some shade of yellow. None of them looked yellow to me... In this video, I give it another try. Can I fill the yellow gap between red and green with a new laser that should emit a wavelength right between the ones I have tested to be closest to yellow? Is it true yellow? How powerful is it? What is its true wavelength? How does it work? Will my camera recording in RGB (red green blue) even film it right? Let's find out! Valkyrie 573 laser donated in March 2024 by: https://tinkerlasers.com Link for laser safety sheet: https://www.lasersafetyfacts.com/laserclasses.html Links for scientific paper on 573 nm laser: https://dx.doi.org/10.1364/OL.34.002183 or https://www.researchgate.net/publication/26889189_Self-frequency-doubled_KTiOAsO_4_Raman_laser_emitting_at_573_nm TEM-mode illustrations by DrBob at English Wikipedia: https://en.wikipedia.org/wiki/Transverse_mode#/media/File:Laguerre-gaussian.png https://en.wikipedia.org/wiki/Transverse_mode#/media/File:Hermite-gaussian.png https://creativecommons.org/licenses/by-sa/3.0/ My Patreon-page: https://www.patreon.com/Brainiac75 Testing my near yellow lasers: https://youtu.be/XQnmMjYHgcM Monster magnet meets plasma ball...: https://youtu.be/1ppPrYeXoek Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0m:00s + 0m:55s + 1m:37s 'Long Note Three' Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 0m:40s + 5m:25s 'Impact Lento' Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time codes: 1m:03s + 2m:11s + 7m:28s + 8m:36s 'Perspectives' Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 3m:01s + 11m:01s 'Adding the Sun' Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 6m:00s 'Hiding Your Reality' Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time code: 8m:18s 'Long Note Three' Kevin MacLeod (incompetech.com) Part from 2:30 into the music track. ISRC: USUAN1100424 Time code: 9m:28s 'Lightless Dawn' Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 7m:02s Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #yellow #laser #mystery

My yellow-green laser module is not even close to performing as advertised. Perhaps because the power supply is less powerful than advertised too? In this video, I max test the power supply and see if it matters. I also build a pulse-width modulator using an Arduino Uno in an attempt to adjust the laser's power output. Will I succeed? Original Arduino project on LaserPWM: https://github.com/geoffworks17/LaserPWM My Patreon-page with Arduino sketches etc.: https://www.patreon.com/Brainiac75 Recommended video links: More about the electronic load and how to max test a power supply: https://youtu.be/hYLUN5zZcA8 Yellow lasers?: https://youtu.be/XQnmMjYHgcM Build your own laser beam dump: https://youtu.be/rRIlhskMYAM Finishing and testing DIY beam dump against a pro model: https://youtu.be/XYI4nET5-fk Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0m:1s + 12m:32s "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time codes: 1m:8s + 5m:0s "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 2m:57s "Interloper" Kevin MacLeod (incompetech.com) ISRC: USUAN1100401 Time code: 3m:44s "Redletter" Kevin MacLeod (incompetech.com) ISRC: USUAN1100714 Time codes: 4m:5s + 10m:50s "Clear Waters" Kevin MacLeod (incompetech.com) ISRC: USUAN1100290 Time code: 7m:22s "Hiding Your Reality" Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 10m:24s Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #laser #powersupply #arduino

Ferrofluid is amazing. I wish everyone could experience it in real life, but it is expensive. Perhaps there is a cheaper alternative in your local store: Magnetic paint! In this video, I test the weird paint and compare it to ferrofluid and my own creation: ferripaste. How well does magnetic paint work in comparison? What are the fluids' strengths and weaknesses? Is one of the disadvantages of paint actually a useful feature? Let's find out! One of the 150x50 mm disc magnets donated earlier by https://www.magnetportal.de/ Ferrofluid and 70x35 mm magnet donated earlier by supermagnete.com: Ferrofluid: https://sumag.net/ferrofluid-x05 My Patreon-page: https://www.patreon.com/Brainiac75 Links to other videos with a similar topic: How to make Ferripaste: https://youtu.be/CWH9C__jn2w Ferrofluid vs. Ferripaste: https://youtu.be/Fw-PemqRN3A Monster magnet meets magnetic fluid...: https://youtu.be/L8cCvAITGWM Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0m:1s "Martian Cowboy" Kevin MacLeod (incompetech.com) ISRC: USUAN1100349 Time codes: 1m:14s + 7m:54s + 11m:45s "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 3m:45s +10m:1s 'Fluidscape' Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time codes: 5m:52s + 14m:42s 'Long Note Three' Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 6m:23s + 10m:49s 'Impact Lento' Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 7m:4s 'March of the Spoons' Kevin MacLeod (incompetech.com) ISRC: USUAN1700008 Time code: 13m:56s "Rising Tide" Kevin MacLeod (incompetech.com) ISRC: USUAN1900010 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 9m:35s Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) 'Spacial Harvest' Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #magnetic #paint #ferrofluid

How do you identify an unknown, radioactive element using affordable tools? I am faced with this challenge from an unlabeled radioactive source. It is radioactive, but what makes it radioactive? In this video, I use a range of tests in an attempt to identify the radioisotope. Including paper, magnets and a gamma spectrometer. Will I figure it out or will the source remain a mystery? Radiacode 103 dosimeter and gamma spectrometer donated by Radiacode.com: https://103.radiacode.com/ They have a YouTube-channel too, including a video of their new manufacturing lab in Cyprus: https://www.youtube.com/watch?v=n7EVYZ0Mf54 My Patreon-page: https://www.patreon.com/Brainiac75 Links to other of my related videos: Mushrooms and Radiacode 101: https://youtu.be/x1UZdLVlBXg SD Card vs. Radioactivity | Data Loss?: https://youtu.be/vx-lcFD3-BE Monster magnet meets monitors (featuring Left Hand Rule): https://youtu.be/pu0pIq-ziEA Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 12:40 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time codes: 0:54 + 8:17 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 4:45 "Hiding Your Reality" Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time codes: 6:12 + 11:49 "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 Time code: 9:02 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 11:18 "Ossuary 6 - Air" by Kevin MacLeod (incompetech.com) ISRC: USUAN1500048 Time code: 14:06 "Ossuary 6 - Air" by Kevin MacLeod (incompetech.com) Part from 2:34 in the music track. ISRC: USUAN1500048 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:36 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #radioactive #radiacode #geiger

I like fiber optic lamps but their brightness always disappoints me. They are too dim to really impress me. No matter if it is an old halogen or new LED type. Time to upgrade my two fiber lamps! Make them brighter - much brighter. Will I succeed or is there a limit I overlooked? LaserCube 7.5W Ultra donated earlier by https://www.wickedlasers.com for this video: https://youtu.be/-iBo3tivsNY My Patreon-page: https://www.patreon.com/Brainiac75 Other videos worth a watch: Yellow lasers!? Finally - after 25+ years of collecting!: https://youtu.be/XQnmMjYHgcM Hidden Hazards of Halogen Lamps: https://youtu.be/qNpF8rB5sNc Crazy difference between 5W LASER and 5W LED!: https://youtu.be/vUwP7SY0Ajs Monster magnet meets subwoofer...: https://youtu.be/wWzg4wRtBkE Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 13:46 "Long Note Two" Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 Time codes: 0:55 + 5:00 + 11:05 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 2:48 + 7:17 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 4:29 + 8:48 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 10:06 "Supernatural" Kevin MacLeod (incompetech.com) ISRC: USUAN1100397 Time code: 11:51 "Ossuary 6 - Air" by Kevin MacLeod (incompetech.com) ISRC: USUAN1500048 Time code: 12:32 "Floating Cities" Kevin MacLeod (incompetech.com) ISRC: USUAN1600018 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 9:42 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #fiber #lamp #laser

What will happen if a strong magnet is put near a monitor? In this video, I will test two screen technologies: old-school CRT and flat-screen LCD. They will meet my largest, strongest magnet and respond in different ways. Will they even work after the challenging tests? One of the 150x50 mm disc magnets donated earlier by https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Monster magnet meets plasma ball: https://youtu.be/1ppPrYeXoek Monster magnet meets aluminum can: https://youtu.be/IDjqeLpjI4A Monster magnet meets subwoofer: https://youtu.be/wWzg4wRtBkE Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped. Time codes: 1:05 + 12:46 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 4:25 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 6:11 "Neo Western" Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time code: 8:29 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 10:04 + 13:50 "Impact Andante" Kevin MacLeod (incompetech.com) ISRC: USUAN1100621 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 9:36 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #Magnet #Monitor #CRT

Welcome to what may very well be the most informative video on yellow lasers online. Simply because there aren't many yellow lasers around - making videos about them even rarer... After 25+ years of collecting lasers, I finally should have some too. Two new colors, supposed to be 561 nm and 591 nm, in the yellow gap between red and green. I will test their color (wavelength in nm) and power output. Are they as specified? Are they even yellow? This may depend on the eyes of the beholder. What do you think? My Patreon-page: https://www.patreon.com/Brainiac75 Recommended videos: Desert Sun Lamps: https://youtu.be/yyygYdSOpi8 Calculate laser lumens: What makes green lasers the BEST lasers?: https://youtu.be/lWQ66Z-HqcM Comparing the two laser power meters: HWLPM Mini 10W vs. Sanwu Tracer 20W: https://youtu.be/wFC9b1a32r4 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Looped by me. Time codes: 0:54 + 3:21 + 8:13 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 1:46 "Martian Cowboy" Kevin MacLeod (incompetech.com) ISRC: USUAN1100349 Time codes: 4:26 + 6:39 + 13:53 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 5:50 "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 Time code: 9:38 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 10:35 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 9:07 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #Yellow #Laser

How delicate is the fluorescence of tonic water? In this video, I test several ways of affecting the light output of tonic water and try to explain how it all works. Turns out that the fluorescence of tonic water is a happy, coincidental combination of the right factors for quinine! My Patreon-page: https://www.patreon.com/Brainiac75 Recommended videos: Smartphones measure MAGNETISM in 3D | Gaussmeter in your pocket?: https://youtu.be/YZqyNyOyJmU Crazy difference between 5W LASER and 5W LED: https://youtu.be/vUwP7SY0Ajs Glow-in-the-dark: Can you change the color?: https://youtu.be/jTQOPRKFIXU Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 0:56 "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 Time codes: 3:10 + 8:40 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 4:41 "Music for Manatees" Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time code: 6:32 + 8:15 "Impact Andante" Kevin MacLeod (incompetech.com) ISRC: USUAN1100621 Time code: 6:45 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 4:15 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #fluorescence #tonicwater

I have always been fascinated by glow-in-the-dark items and still am. But is it possible to change the color of the light the pigments glow with at night? For example by changing the light used to charge them - on both wavelengths and spectral bandwidth? And how about changing the temperature of the pigment? Time to find out! My Patreon-page: https://www.patreon.com/Brainiac75 Find amber with UV light: https://youtu.be/gNJAHwJwPLc Bananas can detect UVC light?: https://youtu.be/bb1Nc1oygTs Build a laser beam stopper: https://youtu.be/rRIlhskMYAM Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Spacial Harvest" Kevin MacLeod (incompetech.com) ISRC: USUAN1100653 Time codes: 0:55 + 6:24 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 2:39 + 8:19 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time code: 3:37 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 4:22 "Fluidscape" Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 9:56 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 5:56 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #Glow-in-the-dark #Fluorescence #Phosphorescence

I have some fluorescent lamps that look ordinary - but they are not! They are designed to simulate sunlight in a desert. What makes them different and why were they designed like that? It is actually a dilemma of life. Let's explore it! My Patreon-page: https://www.patreon.com/Brainiac75 Links for other of my videos: Hidden Hazards of Halogen Lamps: https://youtu.be/qNpF8rB5sNc Are cheap UV detection cards any good?: https://youtu.be/Xdc6B3TcTL8 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 9:09 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time code: 0:44 "Redletter" Kevin MacLeod (incompetech.com) ISRC: USUAN1100714 Time code: 0:53 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 3:42 "Light Awash" Kevin MacLeod (incompetech.com) ISRC: USUAN1100175 Time code: 4:40 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 6:50 "Fluidscape" Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 8:12 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 7:46 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #FluorescentLamp #FluorescentLight #Ultraviolet

How do you spot ultraviolet light? A cheap way is UV indication cards but is a cheap way a good way? In this video, I test three different indicators with six different lights. I also show how it is possible to use the cards to test if your glasses have UV protection. Including potential misreads depending on the light source used. My Patreon-page: https://www.patreon.com/Brainiac75 More about amber search lights: https://youtu.be/gNJAHwJwPLc More about the 3W GTL3 UVC lamp: https://youtu.be/bb4t1F88mHs Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 10:06 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 0:51 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 4:55 "Neo Western" Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time codes: 5:53 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 7:46 "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 7:16 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #UVdetection #UVprotection

Is aluminium magnetic? The simple answer is no. But in this video, I will show how aluminium actually will react in two different ways to a magnet. Using strong magnets and sensitive setups, even soda cans will have visible reactions. Do you know both of them? And can you guess which element will roll off a magnet the slowest: Aluminium, copper or silver? 200x50 mm disc magnet, 50 mm sphere magnet and one of the 150x50 mm disc magnets donated earlier by https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Old video of mine on eddy currents: https://youtu.be/QJyWaliROPo Old video on how to improve eddy currents experiments: https://youtu.be/nz9N_RlFloM Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 11:07 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 0:58 "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 Time code: 2:12 "Fluidscape" Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 4:36 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 8:25 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7:56 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Magnet #SodaCan #DrinkCan

Modern smartphones are packed with sensors. Many will even measure magnetism in three dimensions. Can the cellphone in our pockets be used as a state-of-the-art 3-axis gaussmeter? Let's find out! Maps of Earth's magnetic field: https://www.ncei.noaa.gov/products/world-magnetic-model The F71 Teslameter donated earlier by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx 50 mm sphere magnets and one of the 150x50 mm disc magnets donated earlier by https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Suggested videos: Smartphone as lux meter and sound level meter: https://youtu.be/vpjCb2snZck Mystery of the Demagnetizer | What's inside? How does it work?: https://youtu.be/RazORgAqEUc Monster magnet meets subwoofer: https://youtu.be/wWzg4wRtBkE Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 4:30 + 7:33 + 10:18 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 0:39 + 11:55 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 2:33 + 3:51 "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 Time codes: 3:17 + 3:42 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time codes: 5:37 + 12:42 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 9:37 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 11:26 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Smartphone #Gaussmeter #Earth

Time to beat my all-time laser power record! The latest and largest LaserCube should be the strongest laser I have ever tested. I will use a laser power meter and spectrometer to hopefully verify its specs. I will also open it up to see its inner workings and figure out the laser beam paths inside it. Quite complicated! This also means I can include instructions on how to open it up - for example to change the rechargeable battery after years of use. Perhaps the first time this has been published? Anyway, this was meant as something special to celebrate reaching 750,000 subscribers! Thank you so much! LaserCube Ultra 7.5W donated by https://www.wickedlasers.com Laser engraver Ortur Laser Master 2 Pro donated earlier by Ortur: https://www.aliexpress.com/item/1005003001677388.html My Patreon-page: https://www.patreon.com/Brainiac75 Suggested video links: Calculate lumens from a laser: https://youtu.be/lWQ66Z-HqcM Crazy difference between 5W LASER and 5W LED: https://youtu.be/vUwP7SY0Ajs Zenodilodon, laser combining 36(!) red laser diodes: https://www.youtube.com/watch?v=i4Ce5JKH4wo Zenodilodon, red laser beam array alignment: https://www.youtube.com/watch?v=XwIka7h8sbM Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 9:18 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 0:39 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 2:37 + 12:22 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time codes: 3:52 + 8:03 + 11:43 "Music for Manatees" Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time code: 5:37 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 8:58 + 11:03 "Impact Andante" Kevin MacLeod (incompetech.com) ISRC: USUAN1100621 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 11:15 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653

Why must halogen lamps always be used with a piece of glass in front of them? Because they are hot to the touch running hotter than ordinary incandescent bulbs? Yes, but the heat causes other, less obvious, even invisible issues that you need to be aware of. Issues that the glass protects you against. In this video, I take a closer look at them. My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time codes: 0:48 + 5:13 "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 Time codes: 1:48 + 9:36 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 3:08 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 7:02 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 6:33 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Halogen #LED #Ultraviolet

Keep exploring at https://www.brilliant.org/Brainiac75 . Get started for free, and hurry—the first 200 people get 20% off an annual premium subscription. Are there inexpensive alternatives to light and sound meters? How about a multimeter that will measure both lux and decibels? Or what about your smartphone? In this video, I will test if they are any good... My Patreon-page: https://www.patreon.com/Brainiac75 Recommended videos for further exploration: - SD Card vs. Monster Magnet and Induction Cooker (2000W AC Electromagnet): https://youtu.be/WhqKYatHW2E - How faster is an induction cooker really? | Magnetocaloric Effect: https://youtu.be/8hdzZZtZT48 - Crazy difference between 5W LASER and 5W LED!: https://youtu.be/vUwP7SY0Ajs Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 5:35 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 0:57 + 8:25 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time codes: 2:52 + 10:54 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 7:45 + 8:07 "Newer Wave" Kevin MacLeod (incompetech.com) ISRC: USUAN2000024 Time code: 9:54 "Peace of Mind" Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 5:03 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Smartphone #Multimeter #LightAndSound

Keep exploring at https://www.brilliant.org/Brainiac75 . Get started for free, and hurry—the first 200 people get 20% off an annual premium subscription. Speakers play music by magnetism. The stronger the magnet, the louder and better it will usually play. Makes me wonder what will happen if I take one of my super-strong neodymium magnets and put it behind a subwoofer. Will it play much louder? Does it matter what pole of the magnet faces the speaker? Let's find out! The F71 Teslameter donated earlier by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx One of the 150x50 mm disc magnets donated earlier by https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Recommended videos: Monster magnet meets plasma ball...: https://youtu.be/1ppPrYeXoek Monster magnet meets lasers...: https://youtu.be/FF9i5qQhNyU Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time codes: 0:54 + 1:43 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 1:31 "Monkeys Spinning Monkeys" Kevin MacLeod (incompetech.com) ISRC: USUAN1400011 Time codes: 2:35 + 11:06 + 12:09 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 3:39 + 3:56 + 5:00 + 7:58 "Newer Wave" Kevin MacLeod (incompetech.com) ISRC: USUAN2000024 Time codes: 4:48 + 5:28 "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 Time codes: 8:49 + 11:37 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 10:10 "Peace of Mind" Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:17 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Speaker #Subwoofer #Magnet

Keep exploring at https://www.brilliant.org/Brainiac75 . Get started for free, and hurry—the first 200 people get 20% off an annual premium subscription. How hard can it be to max power test a power supply? After finding out my laboratory power supply will deliver more volts than advertised, I have decided to test how many watts it will deliver. The issue is that I don't know how? In this video, I will give it some attempts and learn from the mistakes... Will the power supply deliver the watts it is supposed to? My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 7:30 + 11:03 "Long Note Two" Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 Time codes: 0:44 + 8:44 "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 Time codes: 2:52 + 6:18 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 3:58 + 10:42 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 9:43 "Peace of Mind" Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 5:50 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Max #Watts #PowerSupply

Thanks to Brilliant for supporting my channel with the sponsorship. Use this link https://www.brilliant.org/Brainiac75 for 20% off on the premium subscription and help me out at the same time. In this video, I will test if something as common as a banana can be used to detect invisible UVC light. Will it react to UVC only or does UVA and heat from a lamp have an effect too? And can you get sunscreen that protects against UVC? As a bonus, I also share a nice recipe for a barbeque banana dessert :) My Patreon-page: https://www.patreon.com/Brainiac75 Video including suncreen, initial test of the banana and spectrum of sunlight: https://youtu.be/EXBAdajRuYw Video on odd hybrid UVC lamp: https://youtu.be/bb4t1F88mHs Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time codes: 0:43 + 3:33 + 8:21 + 9:11 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 2:34 + 5:13 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 6:06 + 7:30 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 6:33 "Peace of Mind" Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:41 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Banana #UVC #Sunscreen

This handheld device is meant to emit UVC. But does it really? I will test it using a green banana and a spectrometer. I will also look into how UVC is reflected by different surfaces. Is a mirror the best UVC reflector? My Patreon-page: https://www.patreon.com/Brainiac75 Other videos of mine: Amber search lights: https://youtu.be/gNJAHwJwPLc Mystery of the Demagnetizer | What's inside? How does it work?: https://youtu.be/RazORgAqEUc Cola is perfect for lowering a laser's power!?!: https://youtu.be/GcpwcpB2Z6A Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time code: 0:45 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 2:44 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 3:18 + 8:24 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 4:51 + 7:54 "Fluidscape" Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 6:12 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 5:44 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #UVC #Banana #Brainiac75

Can invisible UV light make amber gemstones easier to find? Sounds a bit weird but let us test if it really works. Including testing if some inexpensive UV safety glasses will protect our eyes when using high-intensity ultraviolet flashlights. Time for a journey into the world of fluorescence... My Patreon-page: https://www.patreon.com/Brainiac75 Examples of other videos of mine: Fluorescent and 'hot' banana: https://youtu.be/OLdDKb9Bago Beauty in Grass | Colors of Chlorophyll: https://youtu.be/qKn6eYY7huA Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 0:45 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 2:12 "Fluidscape" Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 2:59 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 5:10 + 7:45 + 8:37 "Music for Manatees" Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 4:37 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Amber #Ultraviolet #Brainiac75

After playing and experimenting with permanent neodymium magnets for over a decade, it is time to take the first steps into the world of electromagnets! In this initial video, I will run some basic tests and compare it to a neodymium magnet of similar size. Will I like the electrical version of magnets? The F71 Teslameter donated earlier by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx Neodymium magnet donated earlier by supermagnete.com: https://www.supermagnete.com/block-magnets-neodymium/block-magnet-50.8mm-50.8mm-25.4mm_Q-51-51-25-N My Patreon-page: https://www.patreon.com/Brainiac75 Video suggestions: Magnet Mystery | Help me explain it: https://youtu.be/VHMbwinSKaA Vertical? The Earth's Magnetic Field: https://youtu.be/Of-_BBHYwRE Magnetic hourglass | Time changed by magnet?: https://www.youtube.com/watch?v=y0jnCudNarI Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 1:38 + 11:31 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 0:41 "Music for Manatees" Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time code: 3:22 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time codes: 4:08 + 10:36 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 6:10 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 7:46 "Energizing" Kevin MacLeod (incompetech.com) ISRC: USUAN1900040 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7:11 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Electromagnet #PermanentMagnet #Brainiac75

Is my homebuilt laser beam dump any good compared to an expensive professional model? Or can I improve it by 3D printing a holder for a variable aperture? Let's find out! Thanks to Anycubic for helping out wit a major donation, the Photon M3 Plus and Wash & Cure Plus: https://www.anycubic.com/ Laser module for Aufero Laser 1 donated earlier by Ortur: https://www.aliexpress.com/item/1005003346728741.html?spm=5261.ProductManageOnline.0.0.34584edfdntv2L My Patreon-page: https://www.patreon.com/Brainiac75 Building the beam dump: https://youtu.be/rRIlhskMYAM Cola and other laser beam attenuators: https://youtu.be/GcpwcpB2Z6A Laser color limits data capacity?!?: https://youtu.be/XIWy7dGLORs Science of a UV resin 3D printer: https://youtu.be/FiGtDm77HBM Bad Beams, measure laser divergence: https://youtu.be/GK8lzaFwUBg Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 7:19 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 0:49 + 5:35 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 1:50 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 2:41 + 8:25 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 4:23 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7:54 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #BeamDump #BeamStop #Brainiac75

Can a light bulb be both incandescent and gas-discharge? The little, odd GTL3 lamp seems to be a hybrid between the two technologies. In this video, I take a closer look at the science hiding inside it. The lamp is sold in two different versions online. Only one of them can be recommended - I show you why! Big Clive's video on the Royer oscillator: https://www.youtube.com/watch?v=c4_pGVNjmlk My Patreon-page: https://www.patreon.com/Brainiac75 Recommended videos on same topics: Light Bulbs | LED vs. Incandescent: https://youtu.be/Mb_Do1C5fz8 Metals in glass are AWESOME: https://youtu.be/syTdaoelCbc Crazy difference between 5W LASER and 5W LED: https://youtu.be/vUwP7SY0Ajs Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 Mix of two tracks: 1) "Hiding Your Reality" Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 2) "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 0:41 + 5:10 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 1:56 Outro part of "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 2:24 + 7:37 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Intro part looped by me. Time code: 4:26 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 9:06 "Hiding Your Reality" Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7:00 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #UVC #GTL3 #Brainiac75

What can a rainbow tell us about the limits of focusing a laser? Focusing a laser beam into a tiny spot is important in many technologies. In this video I will go through two examples: optical discs like CDs, DVDs and Blu-rays as well as laser engravers. Does the wavelength of the laser matter? Let's find out! Thank you very much to Edwin En-Te Hwu and Anja Boisen for letting me use their illustration! Link to their publication with even more, interesting info: https://pubs.acs.org/doi/10.1021/acssensors.8b00340 Edwin Hwu's channel: https://www.youtube.com/c/EdwinHwuHacks4Science/videos Laser engraver Aufero Laser 1 and accessories donated by Ortur: https://www.aliexpress.com/store/4570042?spm=a2g0o.detail.100005.1.6aa834d8ZvOfeK Why does light bend?: https://www.youtube.com/watch?v=NLmpNM0sgYk Why does light slow down: https://www.youtube.com/watch?v=CUjt36SD3h8 Calculate photon energy: https://www.omnicalculator.com/physics/photon-energy Calculate focus spot size: https://wavelength-oe.com/optical-calculators/focus-spot-size/ Calculate depth of focus: https://wavelength-oe.com/optical-calculators/depth-of-focus/ My Patreon-page: https://www.patreon.com/Brainiac75 Make your own laser beam dump: https://youtu.be/rRIlhskMYAM My strongest laser, 5W laser vs. 5W LED: https://youtu.be/vUwP7SY0Ajs Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Fluidscape" Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time codes: 0:41 + 7:36 + 8:57 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 3:21 + 5:00 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 (Looped by me) Time code: 4:19 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 4:46 "Ossuary 6 - Air" by Kevin MacLeod (incompetech.com) ISRC: USUAN1500048 Time code: 6:41 "Light Awash" Kevin MacLeod (incompetech.com) ISRC: USUAN1100175 Time code: 9:29 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:28 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Laser #Rainbow #Brainiac75

Stacking barbell weights under a big neodymium magnet is something that requires attention, concentration and carefulness. But how safe is it? Where is the limit before the weights slam up against the magnet? In this video, I look into it and demonstrate an odd phenomenon on the center of large magnets. Can I explain it? Can you help me? Link to ESA Space Shop: https://www.esaspaceshop.com/ 200x50 mm disc magnet and one of the 150x50 mm disc magnets donated earlier by https://www.magnetportal.de/ Ferrofluid donated earlier by supermagnete.com: https://sumag.net/ferrofluid-x05 ESA Space Shop merchandise donated by: https://www.esaspaceshop.com/ My Patreon-page: https://www.patreon.com/Brainiac75 Some other videos of mine on the topic: Mystery of the Demagnetizer | What's inside? How does it work?: https://youtu.be/RazORgAqEUc Unboxing a MONSTER | Extreme neodymium magnets: https://youtu.be/yM4Xe2c0B8M Monster magnet meets magnetic fluid...: https://youtu.be/L8cCvAITGWM Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Spacial Harvest" Kevin MacLeod (incompetech.com) ISRC: USUAN1100653 Time code: 1:08 "Long Note One" Kevin MacLeod (incompetech.com) ISRC: USUAN1100418 Time code: 2:23 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 5:32 + 13:16 "Hiding Your Reality" Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time codes: 7:46 + 12:07 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 9:18 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:44 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #MagnetMystery #Brainiac75 #GiveMeSpace

Does a cheap laser power meter even work? Is it precise enough to be usable? In this video, I test the cheapest power meter I have found for sale and compare it to a much more expensive one. I will use lasers of different colors and optical power outputs. Will the cheap one give the same reading as the expensive one? Let's find out! I bought the laser power meters here (not sponsored or affiliated): https://www.laserpointerstore.com/products/pocket-laser-power-meter/ https://www.sanwulasers.com/product/20wlpm My Patreon-page: https://www.patreon.com/Brainiac75 Laser classes explained: https://youtu.be/dd6656CF1IY Human eyes sensitivity to colors, calculate laser lumens: https://youtu.be/lWQ66Z-HqcM Build a beam dump - easy to make: https://youtu.be/rRIlhskMYAM Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 8:37 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 0:51 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 2:25 + 4:07 + 10:45 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 3:01 + 6:51 + 11:26 "Ossuary 6 - Air" by Kevin MacLeod (incompetech.com) ISRC: USUAN1500048 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 6:23 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #LaserPowerMeter #Brainiac75

Do you really need a Geiger counter that can detect alpha radiation to detect alpha emitters? Not necessarily, since radioactive decays are way more complex than you might think. In this video, I will take my first steps into the world of gamma spectrometry and show how some alpha and beta emitters can be identified by gamma and x-rays! I will even attempt to identify what makes my radioactive mushrooms radioactive... RadiaCode-101 dosimeter and gamma spectrometer donated by Radiascan.com: https://radiascan.com/products/detector-of-ionising-radiation-gamma-spectrometer-radiacode-101-works-with-android-google-maps/ The RadiaScan-701A donated earlier by: https://radiascan.com My Patreon-page: https://www.patreon.com/Brainiac75 SD Card vs. Radioactivity: https://youtu.be/vx-lcFD3-BE How radioactive are bananas and other radioactive foods?: https://youtu.be/OLdDKb9Bago Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Consequence" Kevin MacLeod (incompetech.com) ISRC: USUAN1100283 Time codes: 0:39 + 3:39 + 9:31 "Hiding Your Reality" Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time codes: 1:08 + 8:07 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 5:20 "Ossuary 6 - Air" by Kevin MacLeod (incompetech.com) ISRC: USUAN1500048 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7:35 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #RadiaCode #Radioactivity #Brainiac75

I recently found copper listed on the ingredient list for some candy. Can that really be true and are any metals allowed as a food additive? Join me in a journey into some odd food additives and drinks in this video. Including one that is about to get banned in Europe! My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Music for Manatees" Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time code: 0:17 "Echoes of Time v2" Kevin MacLeod (incompetech.com) ISRC: USUAN1300030 Time codes: 0:52 + 4:12 + 5:23 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 2:31 + 8:28 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 3:51 + 6:57 + 10:13 "Adding the Sun" Kevin MacLeod (incompetech.com) ISRC: USUAN1900041 Time code: 4:49 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7:58 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653

Do you know the difference between a 5 watt laser and a 5 watt LED? Sounds similar in power, but in this video I will demonstrate and explain the crazy difference! Laser engraver Ortur Laser Master 2 Pro donated by Ortur. Affiliate link: https://www.aliexpress.com/item/1005003001677388.html (Note: Sale coming up 11.11.2021). Wow, you actually read the description? Here's a little gift for you: an unlisted video with the unboxing of the engraver and an optional extra for it: https://youtu.be/fVpnGkj_4JM My Patreon-page: https://www.patreon.com/Brainiac75 My video on lumens: https://youtu.be/lWQ66Z-HqcM Testing other strong lasers: https://youtu.be/c4RsQdyjgJE Cola as a laser filter?: https://youtu.be/GcpwcpB2Z6A Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Echoes of Time v2" Kevin MacLeod (incompetech.com) ISRC: USUAN1300030 Time codes: 1:05 + 8:34 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 2:26 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 3:36 + 7:38 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time codes: 4:59 + 7:54 "Neo Western" Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time codes: 6:37 + 11:08 "The Complex" Kevin MacLeod (incompetech.com) ISRC: USUAN1300025 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:05 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #LED #Laser #Brainiac75

I have always wondered how the inexpensive magnetizer-demagnetizer tool works. What's inside it? And why are there stairs inside the demagnetizer opening? According to most sources the stairs are important, but the explanations are vague at best. In this video, I will do some investigation and open the tool to finally figure out how it really works! And show how you don't need the tool if you have a bar magnet... The F71 Teslameter donated in 2018 by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx See how precisely it determines the strength and surprising direction of the Earth's magnetic field at my place: https://youtu.be/Of-_BBHYwRE My Patreon-page: https://www.patreon.com/Brainiac75 Links for some of my other videos: Unboxing a monster magnet: https://youtu.be/yM4Xe2c0B8M Buyer's Guide: Your first neodymium magnet: https://youtu.be/ih-rg6VuJDc Cola is perfect for lowering a laser's power!?!: https://youtu.be/GcpwcpB2Z6A Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 10:18 "Martian Cowboy" Kevin MacLeod (incompetech.com) ISRC: USUAN1100349 Time codes: 1:06 + 5:16 + 6:15 + 8:06 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 2:36 + 7:10 + 9:28 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 4:11 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 4:52 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 5:46 "Supernatural" Kevin MacLeod (incompetech.com) ISRC: USUAN1100397 Time code: 6:40 "Stormfront" Kevin MacLeod (incompetech.com) ISRC: USUAN1200043 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:58 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Magnetizer #Demagnetizer #Tool

Lasers are just getting stronger and stronger, but sometimes you want to lower the laser beam's power. For example when measuring beam divergence or setting up an optical system safely. In this video, I will test some of my viewers' suggestions for lowering a laser beam's power. Including using my favorite drink: cola! Will it work? Will it even be the best choice? My Patreon-page: https://www.patreon.com/Brainiac75 Testing power loss with ND filter and worn or rechargeable batteries: https://youtu.be/WRPjHxJiet0 Testing candles near magnets: https://youtu.be/dX2R4hRAYMc Testing lasers near magnets: https://youtu.be/FF9i5qQhNyU Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 6:08 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Made loopable by me. Time codes: 0:38 + 7:15 "Neo Western" Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time codes: 1:36 + 8:28 "Clear Waters" Kevin MacLeod (incompetech.com) ISRC: USUAN1100290 Time code: 3:46 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 6:17 + 7:58 + 9:29 "Floating Cities" Kevin MacLeod (incompetech.com) ISRC: USUAN1600018 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 9:01 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Cola #Laser #Brainiac75

Can light be used to build something solid? Yes, if you have a UV resin 3D printer like the Photon Mono X and resins donated to me by: https://www.anycubic.com/ In this video I am taking a closer look at the science hiding in a resin printer. Not only is it fascinating, it is very useful too! Follow me in my first steps into this world of creativity and opportunities. Direct link to the Photon Mono X: https://bit.ly/3fqRsQv Brent's video with in-depth details on UV resins: https://www.youtube.com/watch?v=ht4tbCiFxeM My Patreon-page: https://www.patreon.com/Brainiac75 Links for some of my other videos: Lumens in green lasers: https://youtu.be/lWQ66Z-HqcM Magnet meets plasma globes: https://youtu.be/1ppPrYeXoek Making a laser beam dump: https://youtu.be/rRIlhskMYAM Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time codes: 0:23 + 3:32 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 1:16 "Hiding Your Reality" Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time code: 5:01 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 6:52 "Bathed in the Light" Kevin MacLeod (incompetech.com) ISRC: USUAN1100308 Time codes: 7:18 + 9:33 "Music for Manatees" Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 9:01 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #3Dprinter #Anycubic #Brainiac75

I wonder what the best and easiest way to lower a laser's power output is? I have used an ND filter earlier, but it is not without issues. Could I simply switch to rechargeable batteries in stead of alkalines? They have 20% lower voltage after all. And how well does my ND filter work in reality? Like specified? I will also demonstrate how to test the strength of an unlabelled, mystery filter. ND8 filter donated earlier by https://www.wickedlasers.com for their show laser, like I use it in my video on divergence: https://youtu.be/GK8lzaFwUBg My Patreon-page: https://www.patreon.com/Brainiac75 Measuring my strongest lasers: https://youtu.be/c4RsQdyjgJE Measuring laser divergence: https://youtu.be/GK8lzaFwUBg Building my beam dump: https://youtu.be/rRIlhskMYAM Laser classes explained: https://youtu.be/dd6656CF1IY Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 8:20 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 (edited to be loopable by me) Time codes: 0:45 + 4:52 + 9:01 "Luminous Rain" Kevin MacLeod (incompetech.com) ISRC: USUAN1100169 Time code: 1:23 "Redletter" Kevin MacLeod (incompetech.com) ISRC: USUAN1100714 Time code: 1:50 "Clear Waters" Kevin MacLeod (incompetech.com) ISRC: USUAN1100290 Time codes: 3:24 + 7:49 "Darkening Developments" Kevin MacLeod (incompetech.com) ISRC: USUAN1100267 Time code: 5:26 "Neo Western" Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time code: 6:30 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7:05 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #LowerPower #Laser #Brainiac75

Laser beams are amazing to watch since they appear like a string of light. Not like a wash of illumination from other light sources. But does a laser beam spread out? Does it diverge - getting wider over distance? Let's measure the divergence of my cheapest and most expensive lasers! LaserCube WiFi 2.5W and ND8 filter for it donated by https://www.wickedlasers.com See the correction optics in the 2W version here: https://www.youtube.com/watch?v=X5xGaVh67fM Measuring power and wavelength of my strongest lasers, including the Laserglow Hercules: https://youtu.be/c4RsQdyjgJE Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos My Patreon-page: https://www.patreon.com/Brainiac75 FULL MUSIC CREDITS Time codes: 0:01 + 0:33 + 9:44 "Fluidscape" Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time codes: 0:17 + 11:05 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Time codes: 0:42 + 10:08 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 2:34 + 7:15 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 5:56 "Neo Western" Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 9:18 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Divergence #Laser #Brainiac75

Have you ever wondered if radioactivity affects the data on flash memory like the SD cards in your camera? In this video I will test an SD card against some naturally radioactive minerals. They are thousands of times stronger than natural background radiation, but will they erase data on the card? Time to find out! You could be one of ESA's next astronauts! More info here: https://www.esa.int/yourwaytospace Chime in on my poll here: https://www.youtube.com/c/brainiac75/community FULL DISCLOSURE ESA is not sponsoring this video. I just want to help you and ESA out on this once in a lifetime opportunity! The Radiascan-701A was donated earlier by: https://radiascan.com Some of the magnets appearing for a few seconds in the video were donated earlier by: https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 SD Card vs. Magnets and more on Powershell: https://youtu.be/WhqKYatHW2E How radioactive are bananas and other radioactive foods?: https://youtu.be/OLdDKb9Bago Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos GRAPHICS CREDIT Some images and video used with written permission from ESA. Pixabay.com pictures used: Jet: no. 659687 Thanks to user ArtTower Emoticons: no. 1610518 + 1626442 Thanks to user TheDigitalArtist Lightstreak: no. 681196 Thanks to user geralt Basket moon: no. 4919501 Thanks to user cocoparisienne Basket player: no. 33072 Thanks to user Clker-Free-Vector-Images Star sky: no. 1845140 Thanks to user Pexels X-ray hand: no. 1704854 Thanks to user com329329 https://pixabay.com/service/license/ FULL MUSIC CREDITS Time codes: 0:01 + 8:30 "Long Note Two" Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 Time codes: 0:44 + 4:20 + 7:10 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 2:24 "Pamgaea" Kevin MacLeod (incompetech.com) ISRC: USUAN1300036 Time code: 3:40 "Martian Cowboy" Kevin MacLeod (incompetech.com) ISRC: USUAN1100349 Time code: 5:40 "Echoes of Time v2" Kevin MacLeod (incompetech.com) ISRC: USUAN1300030 Time code: 8:50 "Music for Manatees" Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time code: 9:57 "Consequence" Kevin MacLeod (incompetech.com) ISRC: USUAN1100283 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 6:35 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Radioactive #SDcard #Yourwaytospace

The grade of a magnet is important. It tells you how strong the magnetic material used for the magnet is. The higher the grade, the more expensive and powerful the magnet. However, measuring the grade is not easy. I have successfully tested it on 70x20 mm disc magnets, but what about my largest magnets: the monstrous Ø200x50 and Ø150x100 mm disc magnets? Let's find out! Spreadsheet for calculations: https://www.supermagnete.com/faq/flux Original paper with calculations: https://www.researchgate.net/publication/262707508_Alternative_method_to_calculate_the_magnetic_field_of_permanent_magnets_with_azimuthal_symmetry The F71 Teslameter donated earlier by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx 200x50 mm and one of the 150x50 mm disc magnets donated earlier by https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 More details on the center axis method for grade estimation: https://www.youtube.com/watch?v=q9YkbTwFRkk Unboxing the 200x50 mm: https://youtu.be/yM4Xe2c0B8M Using a kitchen scale for ranking magnet strengths: https://youtu.be/mXAAd_wsXgE Did you miss one of my magnet videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 4:48 + 9:45 "Hiding Your Reality" Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time code: 0:38 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 1:19 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 3:13 + 4:05 + 6:56 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 6:28 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #MagnetGrade #MonsterMagnet #Brainiac75

The grade of a magnet is an important attribute. It determines strength and price, but can you test it yourself at home using something as simple as a scale? Is there a correlation between the density of a magnet and its grade? Is it even easy to measure the density of a magnet? Let's find out! The F71 Teslameter donated earlier by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx 200x50 mm disc magnet, 50 mm sphere magnet and one of the 150x50 mm disc magnets donated earlier by https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Video on determining grade with gaussmeter: https://www.youtube.com/watch?v=q9YkbTwFRkk Video on Earth's magnetic field: https://youtu.be/Of-_BBHYwRE Video tip: Monster magnet meets flames...: https://youtu.be/dX2R4hRAYMc Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Looped by me to fit the video. Time code: 0:54 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 2:23 "Sunshine" Kevin MacLeod (incompetech.com) ISRC: USUAN1100517 Time code: 5:17 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7:59 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #DensityMagnet #GradeMagnet #Brainiac75

Time to test my newest garden decoration laser. A more powerful class 3R unlike the others in class 2. Or is it? I will explain the different laser classes and test if it truly is stronger or yet another mislabeled laser. Piter Soft's laser build, class 1 to 3B: https://www.youtube.com/watch?v=-xcYQwgEBw8 Handy PDF-document on laser classes: https://www.lasersafetyfacts.com/laserclasses.html (click on the table for a printable PDF) My Patreon-page: https://www.patreon.com/Brainiac75 Video on the four "class 2" decoration lasers: https://youtu.be/BjERfWgJyMA Testing my strongest lasers: https://youtu.be/c4RsQdyjgJE Lumens calculation for a laser: https://youtu.be/lWQ66Z-HqcM Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 0:50 + 6:09 "Hiding Your Reality" Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time codes: 2:27 + 9:17 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 5:13 "The Complex" Kevin MacLeod (incompetech.com) ISRC: USUAN1300025 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 10:36 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #GardenLaser #DecorationLaser #Brainiac75

If you use high-powered lasers it is not necessarily enough to use safety goggles. Especially Class IV lasers need some extra attention: a beam dump to stop the beam and the reflections from the laser dot. In this video I show you how to make one and I test it using lasers up to 1500 mW. An easy and inexpensive build that will be a major safety upgrade for your laser collection. My Patreon-page: https://www.patreon.com/Brainiac75 Testing my strongest lasers: https://youtu.be/c4RsQdyjgJE Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Redletter" Kevin MacLeod (incompetech.com) ISRC: USUAN1100714 Time codes: 0:46 + 5:57 + 10:43 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 3:57 + 8:21 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 4:44 "Neo Western" Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time code: 5:42 "Long Note One" Kevin MacLeod (incompetech.com) ISRC: USUAN1100418 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 7:48 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #BeamDump #DIY #Brainiac75

Learn more about The Great Courses Plus and start your FREE TRIAL now! Go to → https://greatcourses.thld.co/brainiac75 Fluorescence sounds exotic and you may only associate it with experiments in a lab. But in this video I will show you that drinks and food in your kitchen can be fluorescent too! Can you guess which ones? My Patreon-page: https://www.patreon.com/Brainiac75 My video 'Beauty in Grass | Colors of Chlorophyll': https://youtu.be/qKn6eYY7huA My video 'How radioactive are bananas and other radioactive foods?': https://youtu.be/OLdDKb9Bago Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Floating Cities" Kevin MacLeod (incompetech.com) ISRC: USUAN1600018 Time codes: 0:52 + 2:16 + 6:06 + 8:07 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 1:36 + 4:28 + 9:57 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 3:15 "Long Note Two" Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 Time codes: 3:40 + 5:39 "Light Awash" Kevin MacLeod (incompetech.com) ISRC: USUAN1100175 Time code: 7:07 "Easy Lemon" Kevin MacLeod (incompetech.com) ISRC: USUAN1200076 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 9:28 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Fluorescence #Food #Brainiac75

Thanks to Brilliant for supporting my channel with the sponsorship. Use this link https://www.brilliant.org/Brainiac75 for 20% off on the premium subscription and help me out at the same time. Plasma is known to react to a magnetic field because it is made up of electrically charged particles. This makes me wonder what would happen, if a large magnet is put close to a plasma globe? Let's find out! My Patreon-page: https://www.patreon.com/Brainiac75 Monster magnet meets flames...: https://youtu.be/dX2R4hRAYMc Monster magnet meets lasers...: https://youtu.be/FF9i5qQhNyU Monster magnet meets servers...: https://youtu.be/4l-6qWaZpVQ Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos 200x50 mm disc magnet and one of the 150x50 mm disc magnets donated earlier by https://www.magnetportal.de/ FULL MUSIC CREDITS Time code: 0:01 "Spacial Harvest" Kevin MacLeod (incompetech.com) ISRC: USUAN1100653 Time codes: 0:50 + 6:08 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 2:33 + 3:51 + 8:58 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 5:41 "Wounded" Kevin MacLeod (incompetech.com) ISRC: USUAN1100586 (edited for timing) Time code: 8:02 "Peace of Mind" Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 Time code: 9:38 "Gathering Darkness" Kevin MacLeod (incompetech.com) ISRC: USUAN1100849 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 11:20 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Plasma #Magnet #Brainiac75

Green lasers have both advantages and disadvantages. For safety reasons I have so far focused on telling about the possible infrared leakage from some types of green lasers. To a point where it seems like I wouldn't recommend green lasers at all... But I do! They have a big advantage that makes them awesome and maybe even safer to use than other lasers: lumens. I explain how in this video. LaserCubes and VenumCube donated by https://www.wickedlasers.com My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my laser videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Spacial Harvest" Kevin MacLeod (incompetech.com) ISRC: USUAN1100653 Time codes: 0:52 + 4:30 "Music for Manatees" Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time codes: 2:09 + 4:05 + 8:14 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 3:40 "Impact Lento" Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 10:24 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Edited to be loopable. All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 7:44 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #GreenLaser #Lumens #GoGreen

Does a green laser pointer stop working when it is cold? Or does it turn into an invisible laser? That is nice to know for safety reasons if you are using a green laser pointer to point out stars on a frost-clear night. And what about those decorations lasers for your garden? Are they safe at a freezing winter night? Time to find out in this video! My Patreon-page: https://www.patreon.com/Brainiac75 Links for some of my videos on the subject: Test of garden decoration lasers: https://youtu.be/BjERfWgJyMA Wavelength drifts with temperature: https://youtu.be/EB_tqKcGKwA The issue with green laser pointers: https://youtu.be/iR1Ku5dnbH8 You can see infrared?!? Failing safety glasses: https://youtu.be/r3V5PzTDP7E Monster magnet meets lasers...: https://youtu.be/FF9i5qQhNyU Strongest lasers in my collection | Power and wavelength measured: https://youtu.be/c4RsQdyjgJE Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:01 + 0:46 "Consequence" Kevin MacLeod (incompetech.com) ISRC: USUAN1100283 Time code: 0:36 "Gathering Darkness" Kevin MacLeod (incompetech.com) ISRC: USUAN1100849 Time code: 0:57 "Winter Chimes" Kevin MacLeod (incompetech.com) ISRC: USUAN1100009 Time codes: 2:32 + 6:41 "Darkness is Coming" Kevin MacLeod (incompetech.com) Edited to be loopable. ISRC: USUAN1100584 Time codes: 3:54 + 8:41 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 5:28 "Echoes of Time v2" Kevin MacLeod (incompetech.com) ISRC: USUAN1300030 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 7:57 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #Frozen #Laser #Brainiac75

It is time to take a closer look at some foods that are often said to be radioactive: bananas and brazil nuts. How active are they in reality? And why would they even be radioactive in the first place? Can I find something way more active and still edible in a grocery store? Let's find out! Brazil nut tree image by Juan Carlos Torrico from Pixabay. Radiascan-701A donated by: www.radiascan.com Max testing my geiger counters: https://youtu.be/T1HZ8NAXu64 My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 + 9:35 "Consequence" Kevin MacLeod (incompetech.com) ISRC: USUAN1100283 Time codes: 0:28 + 6:14 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 3:15 + 8:43 + 10:23 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 5:47 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 10:47 "Clear Waters" Kevin MacLeod (incompetech.com) ISRC: USUAN1100290 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 9:03 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #Banana #BrazilNuts #Brainiac75

Is it possible to measure the grade of a magnet? Even if you 'only' have a gaussmeter? It is interesting to know, since neodymium magnets are expensive and it would be nice to know, if you get what you pay for. In this video I attempt to confirm the grade on some magnets before trying to determine the grade of a questionable, cheap N52 magnet. Let's see what it takes to determine the grade of a magnet - or at least get an indication of it... Spreadsheet for calculating flux: https://www.supermagnete.de/eng/faq/How-do-you-calculate-the-magnetic-flux-density Formulas used in the spreadsheet: https://www.researchgate.net/publication/262707508_Alternative_method_to_calculate_the_magnetic_field_of_permanent_magnets_with_azimuthal_symmetry The F71 Teslameter donated by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx Block magnets donated by supermagnete: https://www.supermagnete.com/quadermagnete-neodym/quadermagnet-50.8mm-50.8mm-25.4mm_Q-51-51-25-N My Patreon-page: https://www.patreon.com/Brainiac75 Older video with more on grades: https://youtu.be/idLGVcwzM5Q Mapping field of huge magnets: https://youtu.be/OtEgdHcjsTk Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:01 "Interloper" Kevin MacLeod (incompetech.com) ISRC: USUAN1100401 Time code: 0:37 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 2:46 + 11:25 "Floating Cities" Kevin MacLeod (incompetech.com) ISRC: USUAN1600018 Time code: 6:36 "Long Note Three" Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 9:03 "Clear Waters" Kevin MacLeod (incompetech.com) ISRC: USUAN1100290 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 10:47 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #Magnet #Grade #Brainiac75

It is time to test the strongest lasers in my collection, now that I have both a laser power meter and spectrometer. I can test both power and wavelength of the strongest laser for each laser color I own. I have 11 colors in my laser rainbow, so hang on for an epic journey into the lasers in my collection. Many of which I haven't shown in a video before! LaserCubes donated by www.wickedlasers.com My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos Other laser videos of mine: About infrared leakage: https://youtu.be/iR1Ku5dnbH8 More about infrared and bad safety glasses: https://youtu.be/r3V5PzTDP7E Lasers drift in wavelength with temperature: https://youtu.be/EB_tqKcGKwA 1 watt LaserCube: https://youtu.be/gXBkCGuT7jo 2 watt LaserCube: https://www.youtube.com/watch?v=X5xGaVh67fM FULL MUSIC CREDITS Timecode: 0:01 "Darkness is Coming" Kevin MacLeod (incompetech.com) ISRC: USUAN1100584 Time codes: 0:37 + 13:22 "Music for Manatees" Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time code: 1:09 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 4:31 + 12:25 "Clear Waters" Kevin MacLeod (incompetech.com) ISRC: USUAN1100290 Time codes: 5:49 + 11:20 "Long Note One" Kevin MacLeod (incompetech.com) ISRC: USUAN1100418 Time code: 8:37 "Hiding Your Reality" Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 12:51 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #LaserCollection #Spectrometer #Brainiac75

Thanks to Brilliant for supporting my channel with the sponsorship. Use this link https://www.brilliant.org/Brainiac75 for 20% off on the premium subscription and help me out at the same time. Magnets are mostly known for their magnetic force, which is very useful in itself. But magnetism is also useful for many other things. In this video I give you a look at just how effective magnetism is for heating food in induction cookers. And how the magnetocaloric effect may be used to magnetically refrigerate your food in the future! My Patreon-page: https://www.patreon.com/Brainiac75 Video on opening the induction cooker and testing an SD card on it: https://youtu.be/WhqKYatHW2E Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos 50 mm sphere magnets and one of the 150x50 mm disc magnets donated by www.magnetportal.de/ FULL MUSIC CREDITS Time codes: 0:00 + 6:19 + 11:30 "Fluidscape" Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 0:43 "Music for Manatees" Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time codes: 3:07 + 8:50 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 10:04 "Peace of Mind" Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 10:57 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #induction #magnetocaloric #Brainiac75

Thanks to Brilliant for supporting my channel with the sponsorship. Use this link https://www.brilliant.org/Brainiac75 for 20% off on the premium subscription and help me out at the same time. Are SD cards really magnet proof? Even when thoroughly tested near some of the strongest permanent magnets available? And what about the AC electromagnet in an induction cooker? Will that affect the data on an SD card? Let us find out! F71 Teslameter donated by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx 50 mm sphere magnets and one of the 150x50 mm disc magnets donated by www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:00 "Fluidscape" Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 0:42 "Clear Waters" Kevin MacLeod (incompetech.com) ISRC: USUAN1100290 Time code: 2:47 "Relaxing Piano Music" Kevin MacLeod (incompetech.com) ISRC: USUAN1500075 Time codes: 3:22 + 8:17 "Long Note Two" Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 Time code: 4:46 "Neo Western" Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time codes: 6:32 + 9:31 + 11:16 + 11:41 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 10:56 + 11:36 "Monkeys Spinning Monkeys" Kevin MacLeod (incompetech.com) ISRC: USUAN1400011 Time code: 12:14 "Peace of Mind" Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 13:09 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653 #SD-card #Magnet #Brainiac75

Thanks to World of Warships for sponsoring the video. Play for free here: http://go.thoughtleaders.io/1686420200229 New players on the portal can use the code BATTLESTATIONS2020 to get 250 Doubloons, 3 days premium time, 1 million Credits, USS Charleston (premium ship) and more. I was impressed by how Wicked Lasers managed to squeeze electronics, scanners, batteries, heat sinks and 1 watt of lasers into a 10 cm cube in the LaserCube. Now, they say there is 2 watts of lasers in the new version?!? I will test the new version and have a look inside it. I will also open the 2 watt LaserDock with its 40K galvo system for comparison. LaserCubes and LaserDocks donated by www.wickedlasers.com My Patreon-page: https://www.patreon.com/Brainiac75 Video with 1 watt LaserCube and LaserDock in action: https://youtu.be/gXBkCGuT7jo Opening the 1 watt LaserCube and LaserDock + power testing the 2 watt LaserDock: https://youtu.be/BgCOuFYuohM Testing lasers near magnet: https://youtu.be/FF9i5qQhNyU Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:00 "Consequence" Kevin MacLeod ISRC: USUAN1100283 Time codes: 0:46 + 4:21 + 10:32 "Lightless Dawn" Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 2:52 + 9:01 "Perspectives" Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 5:37 "Ossuary 6 - Air" Kevin MacLeod (incompetech.com) ISRC: USUAN1500048 Time codes: 7:12 + 11:38 "Neo Western" Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time code: 8:10 "Chee Zee Cave" Kevin MacLeod (incompetech.com) ISRC: USUAN1100685 All music above licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ Time code: 11:49 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) "Spacial Harvest" Kevin MacLeod (incompetech.com) Equalized for less treble at the end. Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/ ISRC: USUAN1100653

The first 500 people who click the link will get 2 free months of Skillshare Premium: https://skl.sh/brainiac75 I often call my channel a journey into the fun and beauty of amateur science, so why not have fun with a special beauty product: magnetically activated nail polish! Unfortunately I have no experience with nail polish, but I think it will be all right... Beauty products donated by www.gellak.dk 200x50 mm disc magnet and one of the 150x50 mm disc magnets donated by www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos Bonus info for you, enthusiastic enough to read the description: The magnetic particles in the flexible magnets are most likely strontium ferrite based on the dark brownish look. But it may be barium ferrite too. The thermoplastic binder is typically a polyamide (PA, Nylon 6, Nylon 12) or polyphenylene sulfide (PPS). FULL MUSIC CREDITS Time codes: 0:00 + 8:14 Perspectives by Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 0:38 + 1:23 + 4:21 + 5:04 Fluidscape by Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time codes: 2:03 + 3:51 Light Awash by Kevin MacLeod (incompetech.com) ISRC: USUAN1100175 Time code: 2:45 Lightless Dawn by Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 4:39 + 9:59 Impact Lento by Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time code: 7:20 Easy Lemon by Kevin MacLeod (incompetech.com) ISRC: USUAN1200076 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 9:24 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #MagneticMakeup #NoobAlert #Brainiac75

How powerful are the decoration lasers you may have seen sitting in gardens and projecting red and green dots onto houses around Christmas? What is inside them and how do they work? In this video I open four of these lasers and measure them on a laser power meter. I was surprised by some of the built-in features and their power output! Related videos: Freezing lasers in 'Lasers drift with temperature?': https://youtu.be/EB_tqKcGKwA Mislabeled laser | Power and wavelength?: https://youtu.be/i9WS7Jo2TAY My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 8:37 + 10:32 Rising Tide by Kevin MacLeod (incompetech.com) ISRC: USUAN1900010 Time codes: 0:33 + 7:17 + 12:43 Perspectives by Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 1:55 Music for Manatees by Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time codes: 5:51 + 6:42 + 9:35 Lightless Dawn by Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 11:25 Long Note Two by Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 12:18 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #DecorationLaser #GardenLaser #ChristmasLaser

Magnetic sand in an hourglass is a nice touch. But what happens if I use a way too large magnet near it? Can I change time? Let's find out! One of the 150x50 mm disc magnets donated by www.magnetportal.de/ The F71 Teslameter donated by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:00 Willow and the Light by Kevin MacLeod (incompetech.com) ISRC: USUAN1100591 Time codes: 0:52 + 4:03 + 9:42 Fluidscape by Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time codes: 2:08 + 6:43 Perspectives by Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 3:28 Long Note Three by Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time code: 5:56 Music for Manatees by Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:01 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #MagneticHourglass #Brainiac75

Will a laser beam react to a very strong magnet? Will the electronics? And how about a laser show - will that react to a strong magnetic field? What if I send the beam through the electric field in a plasma ball? Let's find out! My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos Magnets except one 150x50 mm disc donated by: www.magnetportal.de Show laser donated by www.wickedlasers.com FULL MUSIC CREDITS Time code: 0:00 Mix of two tracks: 1) Consequence by Kevin MacLeod (incompetech.com) ISRC: USUAN1100283 2) Long Note Three by Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 0:53 + 5:57 Lightless Dawn by Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 2:07 Outfoxing the Fox by Kevin MacLeod (incompetech.com) ISRC: USUAN1700083 Time code: 3:09 Echoes of Time v2 by Kevin MacLeod (incompetech.com) ISRC: USUAN1300030 Time codes: 4:07 + 9:33 Peace of Mind by Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 Time code: 10:43 Consequence by Kevin MacLeod (incompetech.com) ISRC: USUAN1100283 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 10:05 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #MonsterMagnet #MonsterLaser #MonsterNerd

Can glass be magnetic? Usually we would say no, but in this video I show that all glass react to a magnet in some way and some even react so strongly, that you could call them magnetic! The F71 Teslameter is donated by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx 50 mm sphere magnet and one of the 150x50 mm disc magnets donated by: https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 4:26 Floating Cities by Kevin MacLeod (incompetech.com) ISRC: USUAN1600018 Time codes: 0:34 + 2:08 + 6:53 Relaxing Piano Music by Kevin MacLeod (incompetech.com) ISRC: USUAN1500075 Time code: 2:05 Penumbra by Kevin MacLeod (incompetech.com) ISRC: USUAN1200105 Time codes: 2:37 + 9:27 Outfoxing the Fox by Kevin MacLeod (incompetech.com) ISRC: USUAN1700083 Time code: 10:08 Fluidscape by Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 9:00 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #MagneticGlass #BeautifulGlass #Brainiac75

I have a glass vase that changes color depending on lighting. Cool and beautiful effect, but what's the science behind it? In this video I examine it more closely and look into other color-changing glasses. It is beautiful! My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 8:43 Lightless Dawn by Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 0:35 + 9:05 Fluidscape by Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 4:01 Perspectives by Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 5:30 Bathed in the Light by Kevin MacLeod (incompetech.com) ISRC: USUAN1100308 Time code: 6:41 Meditation Impromptu 01 by Kevin MacLeod (incompetech.com) ISRC: USUAN1100163 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:03 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Beautiful #ColorChangingGlass #Fluorescence

Get 75% off NordVPN! Only $2.99/mo, plus you get an additional month FREE at https://nordvpn.com/brainiac Use promo code: brainiac In an earlier video I tested the world's smallest show laser, the LaserCube from Wicked Lasers. This time I will open it up to see what's inside it. I will also compare the inner workings with a similarly spec'ed show laser to see how they managed to make it this small and even find room for a battery too. Show lasers kindly donated by wickedlasers.com to make this video possible. My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 8:52 Fluidscape by Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time codes: 0:50 + 5:01 Music for Manatees by Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time codes: 1:45 + 6:01 + 10:04 Hitman by Kevin MacLeod (incompetech.com) ISRC: USUAN1300013 Time code: 2:17 Perspectives by Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 3:30 Hiding Your Reality by Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time codes: 7:04 + 7:22 Peace of Mind by Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:20 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653

How hard can it be to change a battery? In the Gamma-Scout Geiger counter it takes some knowledge, but hopefully I will be able to do it. Let's find out! My Patreon-page: https://www.patreon.com/Brainiac75 Three Geiger Counters Challenged: https://youtu.be/T1HZ8NAXu64 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 9:00 Consequence by Kevin MacLeod (incompetech.com) ISRC: USUAN1100283 Time codes: 0:47 + 6:33 Impact Andante by Kevin MacLeod (incompetech.com) ISRC: USUAN1100621 Time code: 1:42 Floating Cities by Kevin MacLeod (incompetech.com) ISRC: USUAN1600018 Time codes: 3:51 + 4:25 Junkyard Tribe by Kevin MacLeod (incompetech.com) ISRC: USUAN1200021 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time codes: 7:37 + 8:22 Electric Sunrise by Josh Woodward. Free download: https://joshwoodward.com/ Licensed under Creative Commons Attribution 4.0 License https://creativecommons.org/licenses/by/4.0/ Time code: 7:50 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #NoobSoldering #BatteryChange #GammaScout

How large is the magnetic field from my two largest magnets? Are the magnetic fields from a 200x50 and 150x100 mm magnet similar? Is my house even big enough for this experiment? Let's find out! The F71 Teslameter is donated by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx The 200x50 mm and one of the 150x50 mm disc magnets donated by: https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 2:31 Lightless Dawn by Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 0:36 + 5:49 Perspectives by Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 4:03 Junkyard Tribe by Kevin MacLeod (incompetech.com) ISRC: USUAN1200021 Time code: 9:39 Hitman by Kevin MacLeod (incompetech.com) ISRC: USUAN1300013 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:53 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #MagneticField #MonsterMagnets #Brainiac75

Show lasers have always impressed me, but they used to be big and expensive. So how much can I expect from a new show laser the size of my palm? Let's find out! The LaserCube was donated by Wicked Lasers. It is now available here: https://www.wickedlasers.com/cube Turns out, there are two versions of it. A basic model with max 800 mW lasers and 2 hours battery life, and a Pro model with max 1000 mW and 3 hours battery. Mine must be the Pro model. Lasers drift with temperature?: https://youtu.be/EB_tqKcGKwA Measuring wavelength: https://youtu.be/i9WS7Jo2TAY My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 3:52 Hiding Your Reality by Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time codes: 0:36 + 10:03 Lightless Dawn by Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 2:12 + 10:18 Hitman by Kevin MacLeod (incompetech.com) ISRC: USUAN1300013 Time code: 6:21 Music for Manatees by Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 9:32 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #LaserCube #PortableLaserShow #Brainiac75

Do common laser pointers drift in color/wavelength with temperature? In this video I freeze and cook three lasers to find out... This video is sponsored by: https://www.curiositystream.com/brainiac75 Promo code for a free month: brainiac75 Video with setup and calculation of wavelength: https://youtu.be/i9WS7Jo2TAY Video using a CD-R as a diffraction grating: https://youtu.be/ZUszmEDm3FU Video about infrared in green lasers: https://youtu.be/iR1Ku5dnbH8 My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 5:12 + 9:19 Hiding Your Reality by Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time codes: 0:35 + 2:37 + 6:25 Lightless Dawn by Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time code: 2:31 Monkeys Spinning Monkeys by Kevin MacLeod (incompetech.com) ISRC: USUAN1400011 Time codes: 2:44 + 8:28 Fluidscape by Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Time code: 7:24 Clear Waters by Kevin MacLeod (incompetech.com) ISRC: USUAN1100290 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:45 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #FreezingLasers #CookingLasers #Brainiac75

Time goes by so fast. I uploaded my first video in March 2009, and here we are 10 years later. Thousands of hours put into making videos, but man has it been worth it. It is a pleasure to make these videos, share them with you, get your feedback for good or for worse and just grow for every video. This video features clips from most of my videos for the first 10 years. I wonder how many of you remember them all... Thanks to all who have made this epic journey possible for me: viewers, subscribers, commenters, patrons, sponsors, donators, collaborators, subtitlers, license granters, musicians (especially Kevin MacLeod), coworkers, friends and family for their patience with me, YouTube's staff and all I may have forgotten over 10 years. Never realized how much this would change my life for the better. Thank you all very much. In some clips you shortly see donated products: Magnets, ferrofluid and magnetic dough from supermagnete.de. Big magnets from magnetportal.de. Compressor from implotex.de. The server guy is Morten Hjorth from My Playhouse. Check out his channel here: https://www.youtube.com/channel/UCVik6mzTCurdJmvdj5dCa7A Keep me going on Patreon: https://www.patreon.com/Brainiac75 Did you miss one of my videos? They are all still here: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:00 Long Note Three by Kevin MacLeod (incompetech.com) ISRC: USUAN1100424 Time codes: 0:05 + 07:09 Music for Manatees by Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time code: 0:50 Perspectives by Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ #10YearsAnniversary #HighlightReel #Brainiac75

My hottest, radioactive sample is finally measured - but also a new, unusually weak sample with tritium. Will all of my three Geiger counters handle it? The RadiaScan-701A and tritium-bearing memorial are donated by: https://www.radiascan.com My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:00 Mix of sounds from freesound including: - Syyyymphonica by digifishmusic (https://freesound.org/s/69569/) - Dronetail 91 by Jovica (https://freesound.org/s/3361/) Sounds licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time codes: 0:33 + 4:28 + 10:45 Clear Waters by Kevin MacLeod (incompetech.com) ISRC: USUAN1100290 Time codes: 2:50 + 6:05 + 9:38 Long Note Two by Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 Time code: 8:05 Music for Manatees by Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 11:04 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 Time code: 11:43 Syyyymphonica by digifishmusic (https://freesound.org/s/69569/) Sound licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ #Tritium #Pitchblende #Brainiac75

I wanted to know what element is attracted the most to a magnet, so I did some testing and got some unexpected results. Who won? The F71 Teslameter donated by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx One of the 150x50 mm disc magnets donated by: https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 4:18 Impact Lento by Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time codes: 0:43 + 8:14 + 10:13 Floating Cities by Kevin MacLeod (incompetech.com) ISRC: USUAN1600018 Time codes: 3:36 + 4:45 + 11:43 Perspectives by Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 7:30 Movement Proposition by Kevin MacLeod (incompetech.com) ISRC: USUAN1100778 Time codes: 9:33 + 13:55 + 14:07 In a Heartbeat by Kevin MacLeod (incompetech.com) ISRC: USUAN1100197 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 13:22 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Elements #Ferromagnetism #Brainiac75

Does a compass tell us the direction of the magnetic field? How strong is the field when measured in three dimensions? Let's look into it... The F71 Teslameter is donated by Lake Shore Cryotronics: https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx 50 mm sphere magnets and one of the 150x50 mm disc magnets donated by: https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos Official plots of the magnetic field: https://www.ngdc.noaa.gov/geomag/WMM/image.shtml Public domain license: https://www.ngdc.noaa.gov/geomag/WMM/license.shtml FULL MUSIC CREDITS Time codes: 0:00 + 3:52 Relaxing Piano Music by Kevin MacLeod (incompetech.com) ISRC: USUAN1500075 Time code: 0:40 Drone in D by Kevin MacLeod (incompetech.com) ISRC: USUAN1200044 Time codes: 1:05 + 2:12 + 8:07 Lightless Dawn by Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 1:31 + 10:42 Movement Proposition by Kevin MacLeod (incompetech.com) ISRC: USUAN1100778 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 10:14 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #EarthsMagneticField #Vertical #Compass

A candle flame behaves oddly near a powerful magnet? What is this? Let's look into it... This video is sponsored by https://brilliant.org/Brainiac75/ 50 mm sphere magnets and 200x50 mm disc magnet donated by: https://www.magnetportal.de/ My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 10:24 Long Note Two by Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 Time codes: 0:50 + 8:09 + 9:25 Music for Manatees by Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time code: 3:55 Perspectives by Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time code: 5:36 Own mix of bought, individual tracks from Music for Manatees by Kevin MacLeod (incompetech.com) ISRC: USUAN1400009 Time code: 6:54 In a Heartbeat by Kevin MacLeod (incompetech.com) ISRC: USUAN1100197 Time code: 9:40 Peace of Mind by Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 8:50 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Brainiac75 #CandleFlame #NerdChristmas

Magnets, lasers, high-voltage etc. I cover all six logo-hazards with experiments in this epic celebration video. Thank you all for subscribing! Your enthusiasm and positive, constructive feedback keeps me going with the videos :) My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 7:08 Mix of tracks from Floating Cities by Kevin MacLeod (incompetech.com) ISRC: USUAN1600018 Time codes: 0:38 + 8:30 Luminous Rain by Kevin MacLeod (incompetech.com) ISRC: USUAN1100169 Timecode: 1:15 Hitman by Kevin MacLeod (incompetech.com) ISRC: USUAN1300013 Time code: 2:54 Garden Music by Kevin MacLeod (incompetech.com) ISRC: USUAN1500081 Time code: 4:15 Impact Lento by Kevin MacLeod (incompetech.com) ISRC: USUAN1100619 Time codes: 5:22 + 6:34 + 10:47 Hiding Your Reality by Kevin MacLeod (incompetech.com) ISRC: USUAN1700081 Time codes: 7:26 + 8:18 Bathed in the Light by Kevin MacLeod (incompetech.com) ISRC: USUAN1100308 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 10:14 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Subscriber #Celebration #Brainiac75

I have five more exotic elements to test! How will they react near a magnet? This video is sponsored by https://brilliant.org/Brainiac75/ I'm on Patreon now: https://www.patreon.com/Brainiac75 Link to playlist with this series: https://www.youtube.com/playlist?list=PLiAlc6pI18dWJT9NNRgGxJF6yHgEElwmU Part 4 has a short explanation of ferro-, dia- and paramagnetism. All my videos: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 12:19 Perspectives by Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 Time codes: 3:56 + 10:14 + 11:16 Fluidscape by Kevin MacLeod (incompetech.com) ISRC: USUAN1100393 Timecodes: 8:06 + 9:38 Long Note Two by Kevin MacLeod (incompetech.com) ISRC: USUAN1100420 Time code: 11:38 Peace of Mind by Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 10:42 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 #Elements #Magnetism #Susceptibility

I can see infrared laser light? Will common safety glasses protect against it? Let's find out! This video is sponsored by https://brilliant.org/Brainiac75/ I'm on Patreon now: https://www.patreon.com/Brainiac75 Measuring wavelength of mislabeled laser: https://youtu.be/i9WS7Jo2TAY Measuring wavelength with a CD: https://youtu.be/ZUszmEDm3FU Infrared from green lasers: https://youtu.be/iR1Ku5dnbH8 All my videos: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 2:50 + 8:55 + 9:40 Lightless Dawn by Kevin MacLeod (incompetech.com) ISRC: USUAN1100655 Time codes: 0:33 + 6:09 Neo Western by Kevin MacLeod (incompetech.com) ISRC: USUAN1100615 Time code: 8:12 Peace of Mind by Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 All music above licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Time code: 9:10 Mix of two tracks: 1) The Shimmering by fran_ky (freesound.org/s/237363) Licensed under Creative Commons 0 license 2) Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653

Some green laser pointers not only emit a bright green beam but also invisible radiation at a hazardous level! How do we make invisible radiation visible and how do you test your laser for this? Let's find out! I'm on Patreon now: https://www.patreon.com/Brainiac75 Video on measuring wavelength of mislabeled laser: https://youtu.be/i9WS7Jo2TAY All my videos: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 2:18 + 9:18 Lightless Dawn by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100655 Time codes: 0:41 + 5:05 + 7:24 Neo Western by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100615 Time codes: 7:43 + 8:36 Impact Lento by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100619

Does mass matter when element samples are racing towards a magnet in my test for magnetic susceptibility? Let's find out! This video is sponsored by https://brilliant.org/Brainiac75/ One of the D150xH50 mm neodymium magnets was donated by magnetportal.de. You can see the unboxing here: https://youtu.be/yM4Xe2c0B8M Video with platinum group: https://youtu.be/sJ_SIOxMZ9E All my videos: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:00 New Planets - New Problems by Triune Films LLC. Royalty-free track bought from triunestore (Triune Scores: Trailer Pack Vol1). Time codes: 0:45 + 7:01 Fluidscape by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100393 Time codes: 2:39 + 5:18 + 9:03 Perspectives by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300027 Timecode: 4:34 Monkeys Spinning Monkeys by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1400011 Timecode: 8:15 Peace of Mind by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1200099

Wauw! I have tested the giant 6x4" magnet I combined from two single 6x2" monster magnets in my previous video. And I'm not disappointed - I show you the results in this video. New records incoming! One of the 6x2" magnets (and the 200x50mm) donated by www.magnetportal.de Unboxing video: https://youtu.be/yM4Xe2c0B8M Combining the two 6x2": https://youtu.be/p0t0J_ERzHM Previous tests with the other large magnets: https://youtu.be/IifqNtd7aes All my videos here: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 3:02 + 8:32 Hiding Your Reality by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1700081 Time codes: 0:34 + 6:14 Music for Manatees by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1400009

Is it possible to combine two giant 6x2" neodymium magnets to one single 6x4" without destroying them? Let's find out! This video is sponsored by https://brilliant.org/Brainiac75/ One of the magnets was donated by: https://www.magnetportal.de/ Missed one of my videos? Go to: https://www.youtube.com/user/brainiac75/videos FULL MUSIC CREDITS Time code: 0:00 Long Note Three by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100424 Time codes: 0:34 + 8:06 Relaxing Piano Music by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1500075 Time codes: 2:21 + 3:18 Consequence by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100283 Time code: 6:35 Sunshine by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100517 Time code: 9:40 Peace of Mind by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1200099

It's about time we test how well the giant 200x50mm neodymium magnet performs compared to my other large magnets. Will it fail? Join me in this epic experiment to compare the magnetic forces! The 200x50mm and second 150x50mm was donated to my channel by www.magnetportal.de in a previous video ( https://youtu.be/yM4Xe2c0B8M ) All magnets are available for European shipping here: https://www.magnetportal.de/magnete/ but watch my beginners guide first...: https://youtu.be/ih-rg6VuJDc Much more magnet videos on my channel: https://www.youtube.com/brainiac75/videos FULL MUSIC CREDITS Time codes: 0:00 + 3:08+ 8:16 Ossuary 6 - Air by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1500048 Time codes: 0:51 + 3:28 + 6:43 + 8:38 Music for Manatees by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1400009 Time codes: 4:32 + 11:58 Hiding Your Reality by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1700081

Can a CD be used as a diffraction grating for lasers to measure the track spacing on the CD and the wavelength of lasers? Time to find out... Video with diffraction grating: https://youtu.be/i9WS7Jo2TAY Video with magnetic motor oil: https://youtu.be/CWH9C__jn2w All my videos: https://www.youtube.com/brainiac75/videos FULL MUSIC CREDIT Time codes: 0:00 + 0:35 Impact Lento - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100619 Time codes: 1:54 + 5:07 + 6:30 + 11:04 until end Dream Culture - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300046 Time code: 6:24 The Truth Is Over There - Triunescores Royalty free. Available from triunestore.com/collections/music-pack Timecode: 7:39 Perspectives - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300027

Can you trust the label on a laser? In this video I try to confirm the power and wavelength on a suspicious laser pen. This video was sponsored by https://brilliant.org/Brainiac75/ Much more laser videos on my channel: https://www.youtube.com/brainiac75 MUSIC CREDITS Timecodes: 0:00 + 0:36 + 5:55 Lightless Dawn - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100655 Timecode: 4:25 Clear Waters - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100290 Timecode: 7:52 - end Peace of Mind - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1200099

It is unreal to celebrate reaching 250 000+ subscribers for me. Never ever did I think this would be possible. 2017 has been phenomenal, thanks to you. In this video I answer some of your questions about me, my channel and the future of it. FULL MUSIC CREDIT Timecode 0:36 Perspectives by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300027 Timecode 9:46 Bathed in the Light by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100308 Timecode 12:27 Neo Western by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100615

Isn't it a problem to handle powerful magnets with iron in our blood? Let's find out! This video was sponsored by https://brilliant.org/Brainiac75/ The D200xH50 mm neodymium magnet was donated by magnetportal.de You can see the unboxing of it and more tests here: https://youtu.be/yM4Xe2c0B8M Credits for the illustration and animation of the hemoglobin molecule: May 2003, Shuchismita Dutta, David Goodsell doi:10.2210/rcsb_pdb/mom_2003_5 http://pdb101.rcsb.org/motm/41 Used with written permission. FULL MUSIC CREDITS Time code: 0:00 Spacial Harvest by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100653 Time codes: 0:35 + 6:27 Perspectives by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300027 Time codes: 4:17 + 8:07 Peace of Mind by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1200099 Time code: 9:25 Lightless Dawn by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100655

Never thought I would unbox a magnet bigger than my monster 6x2", but technology is evolving and I love following along. Luckily, magnetportal.de was kind enough to donate the magnets featured in this video. They are not cheap! The biggest one alone contains around 3 kg of the rare earth metal neodymium. Here's where you can find the magnets and a lot of smaller ones: https://www.magnetportal.de/neodym-magnet-magnete-scheibe-gross-ab-30mm/a-873/ The website is German, but I have communicated with them in English and Chrome can translate the website to your language, so don't let it stop you. FULL MUSIC CREDITS Time codes: 0:00 + 12:08 Dark Times by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100747 Time codes: 0:43 + 8:16 Relaxing Piano Music by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1500075 Time codes: 2:23 + 5:21 Echoes of Time v2 Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300030 Time code: 3:56 Phantasm Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100113 Time code: 7:00 Monkeys Spinning Monkeys by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1400011

With some funny, rather crazy experiments, I test if the homemade ferripaste really is a competitor to the expensive ferrofluid. They will battle in 7 categories and smoke and fire are guaranteed... The ferrofluid was donated by supermagnete.com for my 100K subscriber celebration. You can buy it here: https://sumag.net/ferrofluid-x05 Link to my video on how to make ferripaste: https://youtu.be/CWH9C__jn2w Hidden bonus video with uncut clips of the burning ferrofluid etc.: https://youtu.be/qepkRtjL9QM FULL MUSIC CREDIT Timecodes 0:00 + 11:46 Lightless Dawn by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100655 Timecode 0:33 + 7:22 Perspectives by Kevin MacLeod (incompetechh.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300027 Timecode 6:00 Fluidscape by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100393 Speaker test song Ever Mindful by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1700033

Wanna try ferrofluid yourself but don't want to pay the premium price? In this video I show you how to make your own very easily and cheaply! I couldn't get the common DIY recipes found online to work well but in desperation found another way through my own experiments. I call it ferripaste since it isn't as fluid as the commercial stuff - but that only makes it even more interesting to play with. It will behave in a more varying ways to a magnet than just spikes like the ferrofluid. Hope you can use it to make you own amazing ferripaste experiments :) FULL MUSIC CREDITS Timestamp: 0:01 Immersed - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1600010 Timestamp: 0:40 4:18 9:55 Perspectives - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300027 Timestamp: 7:40 Fluidscape - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100393 Timestamp: 11:20 Peace of Mind - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1200099 Also includes royalty-free music mixed together using Triune Scores: Trailer Pack Vol 1 and Triune Scores: Cinema Toast Crunch Vol 1

Time to explain how easily the fluorescence trick in my latest video is done - using commonly available household items. I also give a shout-out to the best guesses from you in the comments. Thanks for participating! Click CC for subtitles. FULL MUSIC CREDITS Timecode: 0:03 + 3:53 'Brothers Unite' by Alexander Nakarada @ SerpentSound Studios https://soundcloud.com/serpentsoundstudios Licensed under Creative Commons: By Attribution 4.0 creativecommons.org/licenses/by/4.0/ Timecode: 0:26 'Already There' by Josh Woodward. Free download: http://joshwoodward.com/ Licensed under a Creative Commons Attribution 4.0 License Timecode: 5:19 'Faded War' by Josh Woodward. Free download: http://joshwoodward.com/ Licensed under a Creative Commons Attribution 4.0 License Timecode: 8:00 'Electric Sunrise' by Josh Woodward. Free download: http://joshwoodward.com/ Licensed under a Creative Commons Attribution 4.0 License

It's springtime. Soon nature will turn green. Green because of chlorophyll. Chlorophyll has a beautiful green color and can even fluoresce in a complete different color. In this video I show you how to show it. Video with the three-layered cylinder: https://youtu.be/a0ndGKFP_DY FULL MUSIC CREDITS Timecode: 0:00 + 3:29 'Garden Music' by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1500081 Timecode: 0:29 'Light Awash' by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100175 Timecode: 1:22 + 3:39 + 6:45 'Electric Sunrise' by Josh Woodward. Free download: http://joshwoodward.com/ Licensed under a Creative Commons Attribution 4.0 License Timecode: 5:38 'Brothers Unite' by Alexander Nakarada @ SerpentSound Studios https://soundcloud.com/serpentsoundstudios Licensed under Creative Commons: By Attribution 4.0 creativecommons.org/licenses/by/4.0/

Another original video that I don't think anyone else would make... I have collected quite a few standard neodymium magnets, but these ones come with a story I had to tell. Available in three grades they are also a great opportunity to test what difference the magnet grade makes. And what if I double the magnet's thickness by combining two of them? The Monolith Mk. 3 is available here: https://sumag.net/monolith-x04 Thanks to Supermagnete for donating one of them, so I could make this video. Full music credits: Timecodes: 0:00 , 1:29 Lightless Dawn - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100655 Timecode: 0:47 Clear Waters - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100290 Timecode: 6:03 Magic Forest - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1600044 Timecodes: 7:23 , 12:17 Odyssey - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1500012 Timecode: 8:45 Redletter - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100714 Timecodes: 4:23 , 11:12 , 13:37 Elemental - Alan Stewart (Album: https://play.google.com/store/music/album/Alan_Stewart_Time_Passes) https://www.youtube.com/user/AlanKey86 Used with written permission from Alan. I bought his album - hope you will support him too!

Thorned spikes? This time my 6x2" neodymium magnet meets something unusual, a magnetic fluid. It is called ferrofluid and reacts spectacularly near any magnet, but even better near such a large and powerful magnetic pole surface - even with a surprising shape on the spikes! The ferrofluid and magnetic putty were donated by supermagnete.com for an earlier video. You can see the unpacking and more test with them both here: https://youtu.be/wRLnwLsdK6A You can buy them here: Ferrofluid: https://sumag.net/ferrofluid-x05 Putty: https://sumag.net/mag-putty-x02 Or you can some make some ferripaste: https://youtu.be/CWH9C__jn2w Full music credit: Perspectives - Kevin MacLeod (incompetech.com) ISRC: USUAN1300027 http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300027 Ossuary 5 - Rest by Kevin MacLeod (incompetech.com) ISRC: USUAN1500047 http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1500047 Peace of Mind - Kevin MacLeod (incompetech.com) ISRC: USUAN1200099 http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200099&Search=Search Dream Culture - Kevin MacLeod (incompetech.com) ISRC: USUAN1300046 http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300046&Search=Search All tracks licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Alien sound effects in the intro are from Film Riots royalty-free horror pack: http://triune-store.myshopify.com/products/triune-scores-horror-pack

How does platinum react to a magnet? Time for part 5 of my series on how elements react to a magnet. This time the whole platinum group is thoroughly tested with some improved methods. Do I manage to confirm the official values for magnetic susceptibility? Hope you enjoy the video - as always a lot of work was put into it. Links to the first other videos in this series: Part 1: https://youtu.be/62dez4tD5Ok Part 2: https://youtu.be/9gB775y4FbE Part 3: https://youtu.be/0-ex-CAjQhY Part 4: https://youtu.be/I2pmV_jjC7c Part 6: https://youtu.be/Z63TdhDyWGo Full music credit: Fireflies and Stardust by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1600061 http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1600061 Fluidscape by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100393 http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100393

Time to disassemble the YouTube Silver Play Button and test if it is magnetic or not! In this second part of my celebration of reaching 100K subscribers I get a little more emotional but do add some science about the magnetism of stainless steel. I also reveal my purpose with the comments I asked you for in an earlier video. Full music credits: Willow and the Light by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100591 Dream Culture by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300046

I was given a rare opportunity which I simply couldn't resist. Testing my monster magnet on three different servers! Will the sturdy servers be much better at handling a powerful magnetic field than what I previously have tested? There were a few surprises :) Link to Mortens channel, My Playhouse: https://www.youtube.com/user/SirNetrom1 Video with him fixing the servers: https://www.youtube.com/watch?v=BXPZ4ndLqMM Link to Big Clive's autopsy of one of the fans: https://www.youtube.com/watch?v=_n3pNjJovYA And Dave from EEVblog too: https://youtu.be/t-vNo6H5gww?t=38m15s Full music credits: Tempting Secrets - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300038 Dream Culture - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300046 Cephalopod - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1200081 Sunshine - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100517

Why are LEDs so much more efficient than incandescent light bulbs? Do LEDs have disadvantages? These are some of the questions I answer in this video about light bulbs. I also test the claimed wattage and find some anomalies... Full music credit: Neo Western - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100615 Lightless Dawn - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100655 Easy Lemon - Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1200076 Pop:Club - Gerardo Garcia Jr. http://sounds.productioncrate.com/electronic/

This video is in so many ways unreal for me. I celebrate 100k subscribers which is roughly 100k more than I expected. And the items shown in the video are almost alien. Thanks to all my subscribers for the support through the years and supermagnete.com for sponsoring the content of the video! Links for buying the featured stuff: Monolith: https://sumag.net/monolith-x04 Ferrofluid: https://sumag.net/ferrofluid-x05 Putty: https://sumag.net/mag-putty-x02 For the techies: Reaching 100k I wanted to up my game, so this is the first video I have filmed, edited and uploaded in UHD resolution. Hopefully this will give better video quality in all resolutions. Afterall this is a 100 Mbps video rendered with 32x MSAA antialiasing. An 8 GB file upload to YouTube... Video with your comments about subscription: https://youtu.be/H0t0d30NeyA Story of the Monolith Magnet: https://youtu.be/asCp-wLQ0UU Buyer's Guide, Your first neodymium magnet: https://youtu.be/ih-rg6VuJDc Buyer's Guide, Grades of magnets: https://youtu.be/idLGVcwzM5Q English subtitles available. Click CC in bottom of the video. Danske undertekster tilgængelige. Klik på CC i bunden af videoen. Full music credits: Floating Cities Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1600018 Lightless Dawn Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100655 Inspired Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1600022

I hate gardening, but by chance I discovered something that seems contradictive. It's all a natural, eye-catching effect though. Full music credit: Sunshine Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1100517 Link: http://incompetech.com/music/royalty-free/?keywords=sunshine

Is curry fluorescent? That's the question I asked myself after heating a TV dinner. In this video I will give you the answer. Credits - all music used with written permission: Piano solo is 'Crystalline' by Alan Stewart (https://www.youtube.com/user/AlanKey86) Available on his album here: https://play.google.com/music/preview/Bn2zmehus47lub4hxoncx6fjiaa Other music: Music for Manatees Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1400009 Hitman Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ ISRC: USUAN1300013

Implotex has sent me a compressor for review. Its main feature is silence. So it was a good occasion to explore the decibel-scale and make some sound level measurements - compared with my typical discount compressor. I also have a little fun with ping-pong balls... Link to website: http://www.implotex.de/silent-compressor/ On Amazon: http://www.amazon.de/IMPLOTEX/b/ref=bl_dp_s_web_4716909031?ie=UTF8&node=4716909031&field-lbr_brands_browse-bin=IMPLOTEX English subtitles available - click CC under the video. Danske undertekster er tilgængelige - tryk på CC under videoen. Full music credit: Hitman - Kevin MacLeod (incompetech.com) ISRC: USUAN1300013 Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Decisions - Kevin MacLeod (incompetech.com) ISRC: USUAN1100756 Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/

The Sphere. Maybe just an ordinary thing to most but to me something special. I try to explain why in this 75000 subscribers special video. Thanks for the support, views, shares, likes, comments and messages. It means a lot to me and keeps me going :) Link to Veritasiums video: https://www.youtube.com/watch?v=ZMByI4s-D-Y Full music credit: Carefree by Kevin MacLeod is licensed under CC Attribution 3.0. Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1400037. ISRC: USUAN1400037 © 2014 Kevin MacLeod Stoic Morning by Kevin MacLeod is licensed under CC Attribution 3.0. Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100061. ISRC: USUAN1100061 © 2000 Kevin MacLeod Music for Manatees by Kevin MacLeod is licensed under CC Attribution 3.0. Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1400009. ISRC: USUAN1400009 © 2014 Kevin MacLeod Ossuary 6 - Air by Kevin MacLeod is licensed under CC Attribution 3.0. Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1500048. ISRC: USUAN1500048 © 2015 Kevin MacLeod Sound effects are own work except these: http://freesound.org/people/luffy/sounds/3536/ CC3.0 by Luffy http://freesound.org/people/Vehicle/sounds/319521/ CC0 (public domain)

This HDD was destroyed in my previous video. In this video I take it apart to investigate if I can tell exactly what went wrong. And then I just fool around with it... Full music credits: 'EDM Detection Mode' by Kevin MacLeod is licensed under CC Attribution 3.0. Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1500026. ISRC: USUAN1500026 © 2015 Kevin MacLeod 'Carefree' by Kevin MacLeod is licensed under CC Attribution 3.0. Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1400037. ISRC: USUAN1400037 © 2014 Kevin MacLeod

Will an SSD survive a meeting with a giant 6x2" neodymium magnet? I test it in this video. English subtitles are available. Just hit the CC button under the video. Danske undertekster er tilgængelige. Bare tryk på CC-knappen under videoen. - Full music credit - Kevin MacLeod, www.incompetech.com Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ Tracks used: 'Lost Frontier' Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300039. ISRC: USUAN1300039 © 2013 Kevin MacLeod 'Pamgaea' Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300036. ISRC: USUAN1300036 © 2013 Kevin MacLeod 'At Rest' Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100748. ISRC: USUAN1100748 © 2010 Kevin MacLeod

Five new elements! This is part 4 of my series on how elements react to a magnet. I also shortly explain and show the differences between ferro-, para- and diamagnetism. And why not test an ice cube when I have the setup ready for it... Links to the other videos in this series: Part 1: https://youtu.be/62dez4tD5Ok Part 2: https://youtu.be/9gB775y4FbE Part 3: https://youtu.be/0-ex-CAjQhY Part 5: https://youtu.be/sJ_SIOxMZ9E Part 6: https://youtu.be/Z63TdhDyWGo Full music credit: Underscore: 'The Hey' is a royalty-free piece from FilmRiot's webshop, Triune Store, available for download here: http://triune-store.myshopify.com/products/triune-score-the-hey-drama Played in the end credits: 'Simplex' by Kevin MacLeod is licensed under CC Attribution 3.0. http://creativecommons.org/licenses/by/3.0/ Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200024. ISRC: USUAN1200024 © 2012 Kevin MacLeod Legal stuff about the picture with the RTG-pellet: This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. Specifically, this image comes from Los Alamos National Laboratory. LANL requires the following text be used when crediting images to it: Unless otherwise indicated, this information has been authored by an employee or employees of the University of California, operator of the Los Alamos National Laboratory under Contract No. W-7405-ENG-36 with the U.S. Department of Energy. The U.S. Government has rights to use, reproduce, and distribute this information. The public may copy and use this information without charge, provided that this Notice and any statement of authorship are reproduced on all copies. Neither the Government nor the University makes any warranty, express or implied, or assumes any liability or responsibility for the use of this information.

Thank you so much to all who have subscribed! 50000 people is overwhelming. In this video I give you a little look behind the scenes by showing the equipment I have used in the past and the newest equipment of better quality that hopefully will insure great videos in the future. Now it's all up to little me to make as many videos as good as possible... Thanks for all the support by subscribing, liking, commenting, messaging and even a few PayPal-donations. You're awesome!

The Macho Set from supermagnete is a unique set. So I'm not surprised you wanted to see a video about it :) Available here, but only for European shipping: https://sumag.net/mag-sets-x01 Is a similar set available for US shipping? Please let me know and I'll add a link here (and probably buy the set and make a video about it...). So far I've only been told about this little set: http://www.supermagnetman.net/product_info.php?cPath=59&products_id=431&osCsid=36d1ec06a3c3ced51768b26e9cdef150 Not a competitor for the Macho Set, but the small magnets could make a good starter set. Full music credit: In a Heartbeat by Kevin MacLeod is licensed under CC Attribution 3.0. Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100197. ISRC: USUAN1100197 © 2006 Kevin MacLeod

Neodymium magnets are so powerful that you should watch this before buying one. I give guidelines for size, shape, grade and coating. In this way you hopefully will have a good start with a nice beginner magnet. Lin to video with the Macho Set: https://youtu.be/Dh1S9kgz6aw Link to detailed safety sheet: https://www.supermagnete.de/eng/safety.pdf Link to shown sample sets (European shipping only): https://sumag.net/mag-sets-x01 I have no personal experiences with magnet webshops outside Europe. For US/Canada it seems that http://www.magnet4less.com has the best selection at very fair prices. I haven't found any sample sets in their webshop though. Another cheap source for neo magnets are scrapped hard disk drives. It can be tricky to open the drives though and the magnets are specialized. Here's my video about them: https://youtu.be/ep_VCotA1ZY Full music credit: Kevin MacLeod from http://www.incompetech.com Tracks used: Tempting Secrets (ISRC: USUAN1300038) Decisions (ISRC: USUAN1100756)

You may own radioactive stuff already without knowing it. In this video I show and tell about a bunch of radioactive stuff - ranging from everyday items to more specialized, hard-to-find items. Link to previous video: http://youtu.be/SFPMMTpDex0 Link to bionerd23's extraordinary video: https://www.youtube.com/watch?v=6kg4vVYKc90 Full music credits: Kevin MacLeod from www.incompetech.com Tracks used: ISRC: USUAN1100653 - Spacial Harvest ISRC: USUAN1100420 - Long Note Two

Just a quick video with random bloopers, outtakes etc. to wish you a happy New Year! I have high hopes for 2015 - thanks for the support in 2014. Full Music Credits: by Kevin MacLeod, www.incompetech.com Tracks: ISRC: USUAN1100401 - Interloper ISRC: USUAN1300015 - Happy Bee - Surf ISRC: USUAN1100817 - Comin Round the Mountain Sound Effects: freesound.org, all used sounds are public domain

Glow-in-the-dark. How does it work? In this video I show a bunch of phosphorescent samples and explain the difference between fluorescence and phosphorescence. Link to my video about fluorescence: https://www.youtube.com/watch?v=blv1KxYLhc0 If you are interested in more you should search for chromium-activated zinc gallogermanate (Zn3Ga2Ge2O10 : 0.5%Cr3+). They glow invisble in near infrared but can glow for up to two weeks in the dark! Hopefully the scientists will invent something similar that glow in the visible range for so long. I would definitely pay well for a phosphor that could glow on my watch for such a long time. CREDITS Music by: Kevin MacLeod from www.incompetech.com Tracks used: 0:00 - ISRC: USUAN1100420 - Long Note Two 4:00 - 4:19 ISRC: USUAN1100621 - Impact Andante 5:20 - 5:27 ISRC: USUAN1100196 - Inner Sanctum Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ Outro music (5:39 - 6:26): Track Name: Down (http://freesound.org/people/dingo1/sounds/174589/) Composer: Marcus Dellicompagni Website: www.RedAudioUK.com Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ Sound effects: www.freesound.org * Toads and frogs are singing at night in the pond, in the center of the small village of Diafarabe, on the Niger river. (Africa, Mali)- felix.blume * kc_animal_frog-lakeside-penticton-2013.wav - kayceemixer * deep sea ambience - jhumbucker **lucid drone.wav - decembered **dawn chorus.wav - juskiddink * Licensed under Creative Commons: CC0 1.0 Universal (CC0 1.0) Public Domain Dedication http://creativecommons.org/publicdomain/zero/1.0/ ** Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/

Allotropes are really interesting if you ask me. Two samples made of exactly the same element can have very different looks and properties if they are different allotropes. Just by having different bonds between the same atoms. In this video I concentrate on a specific, infamous allotrope of phosphorus. One of the elements with very different allotropes at room temperature. This features the most reactive one...

I have shown how a magnet can destroy a hard disk drive. So how do they put a magnet inside the HDD in the first place? In this video I try to explain it. Link to previous video: http://youtu.be/_yEu2R1gYSs Link for testing an SSD with the same magnet: https://youtu.be/pXITrgRkT5k Link to finding polarities on your magnet: http://youtu.be/5I8gMmYLs30 /// Full music credit (used with written permission) \\\ Tracks by Kevin MacLeod from www.incompetech.com: 0:22 - 0:55 'Prelude and Action' ISRC: USUAN1100887 2:12 - 2:34 and 5:05 - 5:23 'Darkness is Coming' ISRC: USUAN1100584

Will a 6" neodymium magnet destroy a computer? In this video I give you the answer. Link to video, where I take the HDD apart: http://youtu.be/ep_VCotA1ZY Link to video where I test a laptop, with both a HDD and SSD: https://youtu.be/pXITrgRkT5k Or how about a test with three servers?: https://youtu.be/4l-6qWaZpVQ Full music credit. All used with written permission from the authors: Kevin MacLeod from http://incompetech.com/ Tracks used: 0:00 - 0:08 Static Motion (ISRC: USUAN1200062) 9:14 - 9:46 The Complex (ISRC:USUAN1300025) Alan Stewart from https://www.youtube.com/user/AlanKey86 Track used: 2:28 - 3:41 Elemental http://www.amazon.com/Elemental/dp/B00J19YS7C https://play.google.com/store/music/album/Alan_Stewart_Time_Passes?id=Bn2zmehus47lub4hxoncx6fjiaa

10 000+ subscribers!?! Thanks for the support to you all! Just wanted to mark this anniversary and why not by telling a little more about who I am. Links: Video with improving eddy current experiments: http://youtu.be/nz9N_RlFloM Video with fluorescence: http://youtu.be/blv1KxYLhc0 Video with thallium: http://youtu.be/0-ex-CAjQhY Facebook: https://www.facebook.com/pages/Brainiac75/556970697660192 Google+: https://plus.google.com/105599392642046451517 This is also the first video where I'm in front of the camera. Depending on how well this video is received I may start appearing more in front of camera. But this new experience showed me that I need better equipment for this. The built-in microphone in my camera picks up so much room-tone (probably because I have a 300 liter / 80 gallon aquarium in my home). So I need to save up for an external microphone or something like a Zoom H4n sound recorder for 'live' audio. Music credit: Kevin MacLeod from www.incompetech.com Track used: 'Earnest' ISRC: USUAN1100248 (2:07 - 2:15) 'Red Letter' ISRC: USUAN1100714 (4:12 - 4:40) English and Danish subtitles coming soon...

It's time to reveal which elements this shiny block of metal from my previous video is made of. Link to previous video here: http://youtu.be/0-ex-CAjQhY You guys sent so many guesses that I learned about alloys I didn't know off myself :) Once again thanks to all that participated! The CuBe-alloy seems to be quite unknown but has a lot of practical uses. Beryllium-copper even has the highest strength of any copper alloy we know off! Closed captions in English and Danish coming soon...

Finally I can test pure gold with a magnet and see how it reacts. I also test some elements I never thought I would get access to! Part 1: https://www.youtube.com/watch?v=62dez4tD5Ok Part 2: https://www.youtube.com/watch?v=9gB775y4FbE Part 4: https://youtu.be/I2pmV_jjC7c Part 5: https://youtu.be/sJ_SIOxMZ9E Part 6: https://youtu.be/Z63TdhDyWGo Answer to the mystery alloy in the end of the video: http://youtu.be/T2Rrbm7j9w4 Full music credit: Music by Kevin MacLeod, www.incompetech.com Tracks used: 'Penumbra' 1:38 - 2:05 ISRC: USUAN1200105 'Gathering Darkness' 3:27 - 3:55 ISRC: USUAN1100849 'Light Awash' 4:59 - 5:37, 6:15 - 6:45 ISRC: USUAN1100175 'Hitman' 6:46 - 7:59, 9:33 - 9:45 ISRC: USUAN1300013

Ions of uranium, europium, neodymium, terbium and lots of other stuff can fluoresce. In this video I show a lot of them and also try to explain in simple terms how it works. Full music credit: Kevin MacLeod www.incompetech.com All under CC license. Tracks used: 0:30 - 0:50 3:03 - 3:43 4:59 - 5:15 'Darkness is Coming' ISRC: USUAN1100584 1:53 - 2:08 'Night Cave' ISRC: USUAN1100446 4:30 - 4:58 'Bathed in the Light' ISRC: USUAN1100308 Bonus info: I use a generic 18 watt longwave UV-blacklight in this video - not the dangerous shortwave UV even though it could give even better results. Lots of the stuff can be bought on eBay, like Onyx Metall http://myworld.ebay.co.uk/onyxmetall The little test tube with quinine in the beginning is a sample of tonic water that I tried to boil down to concentrate the quinine more. It didn't work out well - lots of sugar in the drink so it just turns into a brown syrup and doesn't really fluoresce more. Be careful with most of the stuff in the video. Always search for the MSDS for a chemical before you buy it. Especially Rhodamine B is dangerous and can ruin your eyes - wear safety glasses and gloves or even better: stay away from it. The radioactive minerals also needs to be treated with respect. It is often the outer most electrons that can be excited - the valence electrons. In the rare earth metals it can happen with inner electrons though - like in neodymium. All the europium samples are europium oxide. I believe the LEGO pieces are not only fluorescent but also so-called LISA plastic. LISA is short for 'licht-sammeln' which is German for 'light-gathering'. It is plastic with high internal reflection so the light is transmitted inside the plastic and send out of the edges - like optical fiber cables. But LEGO likes to keep their secrets so it's just my guess. Almost all transparent LEGOs are made of polycarbonate - which LISA plastic also can be. Normal LEGO is made of ABS.

Welcome to my channel! This is just a short trailer to show you what my channel is about. I'm a Danish amateur/home scientist that makes videos about scientific stuff - so far mostly about neodymium magnets, lasers, radioactive items, elements and their magnetic properties. But I have so much more planned :) I do this is in my spare time and aim for quality over quantity. I put a lot of effort into making my videos as beautiful and entertaining as possible so I can't upload every week. Subscribe or you risk missing my next video ;) Thanks for watching! Music credit: Mr. Meizong - Luminous http://soundcloud.com/dj-meizong http://youtube.com/mmmontagemusic According to its Creative Commons license, this track can be shared, copied, distributed, transmitted, remixed, adapted and used commercially.

Beer, vodka and magnets? Sounds like the recipe for disaster but that's what I'll use to explain grades of magnets! It's important to know about grades when shopping for neodymium magnets. In this video I tell you about the basics of it and compare the powers of ferrite- and neodymium magnets. Feel free to ask questions if you need help or in doubt. Music credit for the outro: 'Junkyard Tribe' by Kevin MacLeod ISRC: USUAN1200021 http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200021 English captions available - just press CC under the video. Danish captions coming soon...

Can metals be melted in hot water or just by the heat of a human hand? Some can and in this video I melt a bunch of them! Here's where I bought the samples if you are interested in trying this yourself: (it's much better in real life than on video ;) www.crystalgrowing-shop.com (German site, most is available on eBay too) - Rose's metal - Wood's metal - Bi-Pb-In-Sn-Cd (in rare cases called French's metal) www.smart-elements.com - cesium - gallium in vacuum ampoule www.eBay.com - gallium - Field's metal The mercury is from antique mercury thermometers. Link to the Hg-Tl pictures I use with written permission: http://www.periodictable.ru/081Tl/Tl_en.html If you are interested in elements you should check out the rest of his website. His thorium sample is the best I have ever seen! There are only few sources about the very specialized Na-K-Cs alloy. I have since the making of this video found another source that mentions these compositions and melting points: 12% Na, 47% K, 41% Cs = Melting point -78 C 3% Na, 24% Na, 73% Cs = Melting point -76 C So no doubt that Na-K-Cs is the metallic alloy with the lowest melting point at around -78 C, but the exact composition is a bit of a mystery... Royalty music from Kevin MacLeod, www.incompetech.com Tracks used: ISRC: USUAN1100694 - Devastation and Revenge (3:19-4:03) ISRC: USUAN1100850 - Constance (4:03-4:41) ISRC: USUAN1100403 - Faceoff (8:25-8:46) Subtitles coming soon in English and Danish.

Here are some more high purity elements being tested with magnets. Links to other videos in this series: Part 1: https://www.youtube.com/watch?v=62dez4tD5Ok Part 3: https://www.youtube.com/watch?v=0-ex-CAjQhY Part 4: https://youtu.be/I2pmV_jjC7c Part 5: https://youtu.be/sJ_SIOxMZ9E Part 6: https://youtu.be/Z63TdhDyWGo I have tried to improve this part two with some of the feedback I got for part one: ~You should tie the magnet to a string or use a sensitive scale to show the weak forces. = I try several methods in this video but some forces are still so low that I have trouble showing them. I definitely need to redo the rare earth metals from part one with the scale! ~The long clips with no magnetic reactions are quite boring... = I've kept the clips shorter this time and actually bombard you with information. You may need to pause sometimes in this video or watch it several times to catch it all :) ~You should color-code the elements in the periodic table after their magnetic properties. = Done! Green to red means the element is attracted to a magnet with increasing intensity. Blue means the element is repelling a magnet. ~Where did you buy that element and how much? = I don't really like when my videos turns into commercials but since this is the most common question I have included the data in this video. Generally: if you can't find it on eBay it's probably not available :) Music credits: 'Long Note Two' by Kevin MacLeod (royalty free) ISRC: USUAN1100420 http://www.incompetech.com 'Moebius' by Theo Kouroumlis (used with written permission form the author) http://theo.drupalgardens.com Subtitles in english and danish are available - just click the CC button under the video.

Here's my submission to Bionerd23's contest for Chernobyl souvenirs. This was a special challenge to me because I usually spend months on brainstorming, filming, editing, recording voiceover, spell-checking, re-shooting, crashes in my video-editor, close-captions and so on before I have a video ready for polishing before the final upload... The contest was announced 21. nov. 2012 and the submission should be uploaded before 2. dec. 2012. My first thought was that with my pace I would never make something useful in such a short time so why bother. But I took the challenge because it's about an interesting subject and kept it short. So here it is. A little messy and with some easy or half solutions but overall I'm pleased with the outcome considering that I only had a week to come up with ideas and film/edit the whole thing while still taking care of my dayjob and the Christmas dinners that have already begun in Denmark... The video should 'be creative about nuclear physics'. I've always had an interest in radioactivity although it's considered controversial by many people. People usually turn dead serious about this subject because radioactivity only reminds them of cancer and death. But those are the extreme cases from extreme doses. There are other sides to radioactivity that I try to show in this video in a... less serious way... I tried to put some humour, unusual twists and an unpretentious feel into the subject in the most creative way I could come up with (bording to madness...). I hope to win one of the Chernobyl items that really would fit in my collection of radioactivity. It is such a remarkable piece of radioactive history: a tourist souvenir from Chernobyl. I doubt we will see the same with Fukushima in twenty years? Should I win I would prefer to receive: 1) baseball cap, SIGNED on top of the stiff eyeshade 2) black shirt size large 3) fridge magnet, 'yellow' Thanks to Bionerd23 for giving us all a chance to win the items and of course for the educational and interesting videoes about radioactivity and The Zone's unseen areas. Credits: Music used is royalty-free music from Kevin MacLeod free for download at http://www.incompetech.com Sound effect for the cancer balloon is a royalty-free effect from http://www.soundsnap.com Video, voices and animations are all my own work except the picture of Chernobyl which can be downloaded from: http://www.lindsayfincher.com/gallery/v/ukraine_july_2007/chernobyl/chernobyl_nuclear_power_station/chernobyl_reactor_4_1.jpg.html I give Bionerd23 full access to use parts of my video :) Still reading? Then you may be interested in an old video with my radioactive collection which I need to update soon since my collection is quite larger now...: https://www.youtube.com/watch?v=SFPMMTpDex0 Subtitles are available in english and danish. Just click the CC button under the video.

I have received some input from my kind and smart viewers and in this video I will test two ways of improving my experiments with eddy currents. Keep the good comments and messages with constructive feedback, suggestions and inspiration coming! I read them all but simply don't have time to respond to all - sorry. Links: Previous video about eddy currents: https://www.youtube.com/watch?v=QJyWaliROPo Video about marking poles on magnets: https://www.youtube.com/watch?v=5I8gMmYLs30 Roylty free music used under Creative Common license: 'Arcane' by Kevin MacLeod, www.incompetech.com, ISRC: USUAN1100831 Illustration: Rick Hoadley, http://www.coolmagnetman.com/magindex.htm Closed captions with English and Danish are available - just press the CC button under the video.

I have had request for showing my collection of neodymium magnets. I had trouble figuring out how this could be done in an interesting video. I ended up with the solution that I could test the larger magnets in some simple test. It also gives me a chance to show that bigger isn't necessary better - at least not worth the extra price for all applications. Closed captions in English are available.

Eddy currents are a fascinating phenomenon that can be used for some stunning experiments. In this video I try to show a variety of experiments utilizing eddy currents. My imagination is limited so feel free to comment with other experiments that you have tried yourself. I probably should warn the ones that invests in copper bullions: Copper is a soft metal and the nickel coating on the neodymium magnets will easily scratch the copper! I don't mind the scratches since the copper bars were bought specifically for magnet experiments. I bought the copper on eBay.de. The large one was around 80€ (100$). Music credits: free download from www.incompetech.com (but I have made a donation to him so that he can carry on making good music for the amateur video makers like me). Track from 1:50 is: Deep Haze by Kevin MacLeod is licensed under CC Attribution 3.0. Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100886. ISRC: USUAN1100886 © 2011 Kevin MacLeod Track from 3:06 is: Montego by Kevin MacLeod is licensed under CC Attribution 3.0. Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100808. ISRC: USUAN1100808 © 2011 Kevin MacLeod I have added English and Danish subtitles for the hearing impaired, the ones that don't understand my danish accent or the ones that just want to see what Danish looks like :)

This is a video focusing on the little detail of putting a spacer between magnets or not. I highly recommend using a spacer - as the magnet factories also do when delivering large quantities of magnets to the retailers. In this video I try to show why.

I believe this video is unique. I haven't found a video on YouTube showing so many different metals and their effect with magnets. I dream of getting all the available elemental metals and make updates for this video series. I have had quite a lot feedback suggesting that I should have put the magnet on a string or scale so smaller effects would be visualized. I use this in newer parts of this series: Part 2: https://www.youtube.com/watch?v=9gB775y4FbE Part 3: https://www.youtube.com/watch?v=0-ex-CAjQhY Part 4: https://youtu.be/I2pmV_jjC7c Part 5: https://youtu.be/sJ_SIOxMZ9E Part 6: https://youtu.be/Z63TdhDyWGo I may at some point redo this video with more sensitive setups, but with 41 metals it is quite a large project :| Music is by Kevin MacLeod from http://www.incompetech.com. Songs used: 0:31 - 6:13 + 8:55 - 9:54 Sovereign ISRC: USUAN1100065 6:13 - 8:55 Atlantean Twilight ISRC: USUAN1100322 9:55 - 10:31 Darkness is coming. ISRC: USUAN1100584 His music is free and royalty free for download and released under a Common Creative Attribution license which is perfect for an amateur video maker like me but I have made a fair donation since I use his music extensively in my videos. Close captions are available in English and Danish (click the CC button under the video).

This video is part of my series on how to handle neodymium magnets safely. This is a more advanced lesson on how to make a matrix of magnets with the poles in a checkerboard pattern. This is what you need to make a piece of diamagnetic pyrolytic graphite levitate. I will also give you some hints on how to take the matrix apart again. Here are the captions in case the combination of my lousy microphone and danish accent is hard to understand (also available: danish and english closed captions - just press the CC button under the video): Hello there, this video is part of my series on how to handle neodymium magnets safely. In this video I am showing you how to safely put together magnets with the poles in a checkerboard pattern that is suitable for levitation. What you see is pyrolytic graphite being repelled by four neodymium magnets. So let's start with some tiny ones. These can be arranged by hand alone but don't for a second think they are weak. Just one of these will hold over a kilogram of iron. The only tool I recommend for these tiny magnets is this simple locking-board. The iron plates underneath locks the loose magnets in place - or at least dampens the acceleration when putting the magnets together. These thin magnets are very fragile and will easily break if just thrown together. Alright. Here's the checkerboard pattern of north and south poles I am going to make. Let's go ahead and take the first magnet of the stack and place it on the locking board. The next magnet you need to turn 180 degrees before putting it on. The poles of the magnets can't face in the same direction since only opposites attracts. Continue doing this and remember to turn every second magnet upside down. There you go... And now just some hints for restacking the magnets without breaking them. OK - what you've seen so far may be basic to most of you so let me raise the ante. These are tricky little bastards. They are just the size where they don't look impressive like a huge one in some of my other videos but these will draw blood if you get pinched by them. Who said nerds don't work out? :) I have marked the north poles on these cube magnets with dots around the edges so I always know which two surfaces are the poles. Let's build a checkerboard: take the first magnet of the stack using a splitter tool. Put the magnet on the locking board with one of the pole surfaces pointing upwards. For the next magnet you need a large wedge to slide the two magnets safely together. Remember to turn the next magnet upside down so you've got opposite poles attracting each other. I will make a 3x3 pattern so let me just put another one on - mind the poles. Repeat until you have three of these 3x1 bars. Remember to keep them far apart so they don't smash together. Take one of the bars and mind the poles. Take the next bar and put it upside down on the locking board following the rule of attraction between opposite poles. Bring the bars together with the wedge in between and make sure the bars are aligned. Finish the project with the last bar. There you have it: nine powerful magnets put together with no loss of blood. And here's what they can do. Now for some hints on how I restack them. As always: Mind the poles... Bye bye for now.

In this video I fool a little around with the Ferrari of handheld lasers: Laserglow Hercules. I have the 400+ mW version which peaks at 489.6 mW and average 424.8 mW over 10 minutes. The prize on this has dropped A LOT since I bought it second hand 3-4 years ago. Current prize as new is 1389$ (August 2011). It used to be 2989$... Full music credit: Track in intro: Interloper by Kevin MacLeod is licensed under CC Attribution 3.0. http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100401. ISRC: USUAN1100401 © 2008 Kevin MacLeod Track at 1:40: Supernatural by Kevin MacLeod is licensed under CC Attribution 3.0. http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100397. ISRC: USUAN1100397 © 2008 Kevin MacLeod Track at 2:33: Rites by Kevin MacLeod is licensed under CC Attribution 3.0. http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100722. ISRC: USUAN1100722 © 2010 Kevin MacLeod Track in outro: White by Kevin MacLeod is licensed under CC Attribution 3.0. http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100010. ISRC: USUAN1100010 © 2006 Kevin MacLeod Captions (I'm gonna experiment with true CC for English and Danish on this video): Yeah, yeah, I know. That was total overkill but it sure was fun to make. And speaking of fun: in this video we're gonna fool around with the Laserglow Hercules-400. Just for size comparison: here's your standard Mag-Lite®-copy flashlight for 3 D-sized batteries and a Mag-Lite® flashlight for 4 D-sized batteries and here's the Hercules laser. No, no, behave Hercules! You big bully :) Sorry about that. Here's what I wanted to show you. The Hercules is larger than a flashlight with 4 D-sized batteries. With over 400 milliwatt the beam is very visible even without smoke or fog in the air. Here it's in daylight inside at night and in the darkness. Well - it's never really dark with a Hercules turned on. With a little smoke in the air the beam is way to bright for the camera. Watch how the smoke creeps closer to the laser and overexposes the camera. It will of course do the usual tricks that you see a burning laser do - like lighting matches... and popping balloons. With a little focus it will even light metal in the form of steel wool. Too close... out of focus... there you go!

This is another video in my series of videos on how to handle large neodymium magnets safely. In this video I show you how to separate two large neodymium magnets without destroying yourself or the magnets. The tool is not my invention but I did make it myself out of scrap wood. Other examples of this tool you can find on robgallagher and kjmagnetics channels here on Youtube. Here's a guide for building one: https://www.kjmagnetics.com/buildamagnetseparator.asp The combining procedure is my own trick. Full music credit: White by Kevin MacLeod is licensed under CC Attribution 3.0. Direct Link: http://incompetech.com/music/royalty-.... ISRC: USUAN1100010 © 2006 Kevin MacLeod

I have been collecting radioactive items and minerals for almost two years now so it is time to share it with you and all the other collectors on Youtube. A good source of other radioactivity videos is Bionerd23's channel: http://www.youtube.com/user/bionerd23 Best radium based collection I have seen on Youtube: http://www.youtube.com/user/ALARAiswise#p/a/u/1/bcbSGoQ7Hg0 Captions to help you understand my danish accent :o) : OK - after that disclaimer let's take a look at my radioactive collection as of July 2011. It contains small samples with relative low activities but I still take precautions with these because of the radioactivity. Mishandling these can be dangerous and even lethal in long terms. Let us start with the thorium-based part of my collection. This includes thoriated welding electrodes and gas mantles, euxenite, polycrase, thorite in different sizes, aeschynite and iron rich thorogummite. Here I use my Gamma Scout to measure the activity of the thorogummite. I have set the alarm quite high at 50 microsieverts/hou so the Gamma Scout will start to tick over this level. This time it peaked at 89 microsieverts/hour. My normal background level is .12 microsieverts/hour so this piece of thorogummite measures 744 times normal background level - not bad. Next I'll show you my special thorite sample which is cut like a gem stone. If the grim reaper ever were to wear jewelry this would be it. Dark and deadly - but quite beautiful actually. The camera doesn't do it justice. The seller did point out that this is not suitable as jewelry. He wasn't kidding... Next up is the radium based part of my collection. These are radium painted watch hands. I hate them. They caused so many deaths amongst the women that painted them, they emit a lot of radon and even a tiny speck of paint that falls off these loose spare hands is highly active. Much safer are the sealed vacuum tubes used in radars during World War II. I have a single Westinghouse 1B45 and two Western Electrics 1B22. It is the 1b22 tubes you see in the video. As you can see one of the boxes is still sealed. It has remained unopened since June 1945 - that's over 66 years. Moving on to the americium based sources. I have a total of 9 americiumoxide discs in various stages of the extraction process from smoke detectors. Three with an amount of 37 kBq and 6 with 33 kBq. When I turn on the ticker in the Gamma Scout it starts screaming from all the alpha-particles hitting it... and then it passes out. Too much for it to handle. Luckily with only the alarm turned on it manages to get a proper reading. The radiation is almost entirely alpha-particles which can't even penetrate the outer layer of dead cells in your skin so it is relatively safe radiation. Last but not least: my colorful uranium based collection. What you see is uranium glass, phurcalite with zippeite, betafite, uraninite, torbernite, samarskite, boltwoodite, autunite, samarskite with ytterbium, uraninite with gummite and more torbernite. I also have some of the famous uranium glazed pottery. This is not the Fiesta Ware brand. It is marked GMBC and the other ones in my collection are from Vernon Kilns. They are actually orange in real life but my camera picks them up as red - sigh. Here is a ½ gram sample of the infamous depleted uranium. It emits almost only alpha-particles which are stopped by the glass so I'm not picking up that much activity from it. I am not taking it out of the ampule though since it's also toxic. Sorry for the bad lighting but it peaks at 2.0something microsieverts/hour.

Many people have wondered how a 6" neo-magnet is shipped. In this video I show you how. This is not an unpacking video since I unpacked the magnet a long time ago but I have kept most of the original packaging as an easy way of storing the magnet relatively safe. Captions in case you don't understand my english with a danish accent: Hello. Since I published the video with my monster 6" neodymium magnet a lot of people have been interested in how this magnet was delivered without sticking to everything. Since I kept the original packaging as a storage for the magnet I can now show you how. The magnet comes in a surprisingly small box but there is a little trick involved as you will soon see. The box had 4 plastic strips around it as seen on the marks where I point. Under an initial layer of styrofoam the little trick is revealed. The box has a thin sheet of iron in the top and bottom to shield - or rather redirect - the magnetic field from the magnet. The sheet is pulled strongly towards the magnet so I have to be careful not to get cut. Now I place the sheet far away from the magnet to avoid it flying against the magnet and through me with its sharp edges. The next layers are made of pieces of plywood which can't be compressed like the styrofoam. After digging through more layers of styrofoam and plywood we find the magnet wrapped in plastic and paper. When delivered it came in vacuum packed plastic and paper wrapping like shown here with a much smaller magnet. It takes a little persuasion to get the magnet out since it is attracted to the sheet of iron in the bottom af the box. But there you have it: over 6½ kg of raw magnetic force. So.. is it really shielded? No. Only enough for the postman to get it out of the van but still have some 'What-da-f**k'-experiences. Yeah... he hates me...

I just had to make a new video to welcome all my new subscribers. I experienced a sudden boost in subscribers when one of my magnet videos somehow got featured on College Humor's website under the headline: "The only thing stronger than the magnet is his commitment to uncool things". I can't argue with that?!? =:o) Being busy at work as always I just made a video with clips already lying on my computer. So I admit this video is quite random in nature but better than nothing... Thanks to all my subscribers and College Humor! Also thanks to Discovery Channel who featured clips from this video in one of their shows (Outrageous Acts Of Science/ You Have Been Warned / Eksperimentaristerne). Royalty free music is by Kevin MacLeod (incompetech.com) and used under a Common Creative license. Tracks used: 0:04 - 0:41 + 1:06 - 2:03 Night Cave ISRC: USUAN1100446 2:04 - 2:28 Martian Cowboy ISRC: USUAN1100349 2:28 - 2:58 Chee Zee Beach ISRC: USUAN1100686 Captions: - Before the Youtube haters start commenting like: "FAKE #¤%&!" - let me just explain what is going on. - No strings, no magic, not even alien anti-gravitational devices. - There is a large neodymium magnet under the table. - When I put the allen wrench into the magnet's field the wrench turns into a weak magnet in itself - with a southpole attracted to the hidden magnet and a northpole repelling it. - It is still - however - difficult to balance repulsion, attraction and gravity... - Here I show you how the magnet can turn a compass needle 360 degrees at a distance of 170 cm or 5 feet 7 inches. - Measuring distances can be a challenge in itself with this magnet...

2010 have been a great year on Youtube for me. A lot of new subscribers and friends which I want to thank with this video. I also put some previews of what I expect to make videos of once in the future. Hopefully most of them in 2011 but who knows. I'm just a hobby amateur spending my short spare time on making these videos. I love to film and edit videos but often my job requires a lot of my time. But hey - without the job I couldn't earn money to the gadgets featured in the videos and the equipment to make the videos. So I hope you understand why it sometimes takes half a year between my uploads. Thanks for subscribing! The more subscribers I get the more I feel engaged to make new videos.

This video is part of a little series of videos I'm making on handling neodymium magnets safely. In this video I will show you how to determine the poles on disc, cube and sphere magnets. Knowing your magnets polarity is very useful for safely combining large magnets as shown in one of my other videos in this series. Music is by Kevin MacLeod (from his website incompetech.com) and Nick van Man (from his website music4yourvids.co.uk) used under Creative Commons license. Tracks used: 0:00 - 0:06 'Supernatural' by Kevin MacLeod ISRC: USUAN1100397 0:06 - 5:40 'Watching the sun go down' by Rick Van Man Here are the captions in case you don't understand my Danish accent: - Hi. In an earlier video I showed the advantages of knowing the polarities of your magnets. In this video I'm gonna show you how to determine the polarities of your magnets. Where is the north pole? - The professional way is to buy a dedicated pole detector. With just a click on a button it will tell you whether it's a north pole or a south pole you are pointing towards. - This is my favorite method. Use an old-school compass. - Let's start with a disc magnet as these are the easiest to determine. The poles are on the large flat surfaces. I let the magnet stand on its side so the poles are pointing towards the compass. Now I spin the magnet until the south part of the compass needle - which is actually a small magnet in itself - points towards the disc magnet. - With magnets opposite polarities attracts so now I know the north pole of my disc magnet is pointing towards the compass. I mark the north pole of the magnet with an N. And double check just for good measure. If I spin the magnet with no poles pointing towards the compass the needle doesn't move. This is valuable information for our next challenge: The cube magnet. - On a cube magnet you can't tell by the naked eye on which two surfaces the poles are. So you just have to put it randomly down. In this case I was a little unlucky and put the magnet down with its sides pointing towards the compass. Because the compass needle is not spinning along with the magnet. Therefore the poles of the magnet must be on the top and bottom surfaces and I have to tilt the magnet 90 degrees. Now the poles are pointing towards the compass and I do exactly the same as with the disc magnet. - With south pointing towards the magnet I have found the north pole of my magnet. Right here. I mark the north pole of the magnet with an N. - And now for the real challenge: The sphere magnet. Where are the poles on this one? - With a magnet that can roll in all directions it is very hard to get a steady and exact reading. The solution is to put the magnet on what I call a security board. This is just a thin wooden plate with a metal plate glued to the backside. On this board the magnet will always align with one pole pointing directly into the board and the other pole pointing directly upwards. - By now you should have figured out how to find the north pole. - The final method I am going to show you is to use the magnet as a compass in itself. In this case I'm going to use two small magnets from a play set. By hanging them on a long tension-free line the magnets will act as a compass and align with the Earth's magnetic field. I cannot force them to point in another direction. Eventually they will stop pointing in the same direction everytime. Make sure there is not metal close by - just like when you use a compass. - Here I point towards the geographic north. By definition the north pole of a magnet is the pole pointing towards the geographic north so northpole on a magnet is short for northpointing pole. That means I can mark the pole pointing towards north as the north pole. - Another version of this method is to float the magnet on some styrofoam in the middle of a waterbath. It takes a little more preparation but has much faster response time as shown. - Once you have determined the polarities of one magnet you can use it to determine it on all other magnets. The south pole of the marked magnet will stick to the north pole of your unmarked magnet.

Can you see the beam from the Dealextreme 200 mW red laser? A lot of people have asked me this and in this video I'll try to show you the answer. It highly depends on the conditions. It's never as bright as even a low power (20-30 mW) green laser but this is because of the human eye. Our eyes are not very sensitive to red light compared to green light so if you are looking for maximum beam visibility in clear air you should always go for a green laser. Hope this video clarifies even though it's hard to show you how it looks in real life. In real life it looks way better with its intense red color. And yes, I misspelled the website in the end. The royalty free music is from Kevin MacLeod from www.incompetech.com. Tracks used: 0:00 - 2:04 Spacial Harvest ISRC: USUAN1100653 2:05 - 2:42 Private Reflection ISRC: USUAN1100587 Captions in case you don't understand every word of my danish accent: Hi. A lot of people have asked me: Can you see the beam from the 200 mW red laser from Dealextreme? The answer is: Well... sort of... It depends on the circumstances. Let me clarify. On their website they claim it to be visible in daylight. But it isn't. Just watch my first video. You can't see the beam in daylight. So what about in less powerful artificial light? Well... No... Not really. Okay. What about without light? Yes, you can see it but it's faint. Now let's try it with smoke in the air. Just a little puff from a very cheap smoke machine. I think the pictures spoke for themselves. There even was a reflection in the cabinet doors. Now I'll just leave you with a bonus clip. See ya later

Can you combine two large neodymium magnets without killing the magnets and yourself? For safe and compact storage you might want to combine magnets despite the dangers. In this video I show you how without ruining your magnets or your health! I have decided to make a little series of videos about safe handling of neodymium magnet. There aren't many videos on Youtube on this subject. I'm not an expert on this subject but I do have practical experience and have learned a lesson or two the hard way. In this video I put together two magnets with a spacer inbetween. I have a lot of magnets. Storing them individually with a safe distance would take a lot of space and make my home a ticking bomb of magnets ready to fly together. Combining them with a spacer makes a safe and space-saving storage. Watch my video 'Spacer or no spacer' for more details about the advantages of a spacer: https://youtu.be/9Q8qqUsNf-U Link to my video where I separate them again: https://youtu.be/ybY_wdQ5MSc How to determine polarities on the magnets: https://youtu.be/5I8gMmYLs30 This video also forced my into trying something new in my videos: voiceover. Since my danish accent may be hard to understand (and I had a cold while recording the voice-over) I have put English and Danish subtitles in the video. Just press CC under the video.

This video featured my largest neodymium magnet back in 2010 which also happens to be one of the largest in the world today. I hadn't seen neodymium magnets larger than 6 inches for sale (I had heard about some that were 8 inches in one dimension). Now, www.magnetportal.de has a D200 mm x H50 mm for sale. Check my video unboxing it here: https://youtu.be/yM4Xe2c0B8M Music credit: Royalty-free music from RickVanMan: http://Music4YourVids.co.uk Tracks used: Lonely Piano1 Film - Atmosphere FAQ: A lot of people ask what the magnet costs. The normal price for this magnet used to be €349 which was around $470 (February 2011) but neodymium has exploded in price since: [Update August 2011: The price is now 799€. I guess neodymium is getting very expensive very fast!] [Update January 2013: It's getting cheaper again: € 599 or $ 785] [Update March 2013: It's getting cheaper still: € 530 or $ 700] Another commonly asked question is: How do they ship this magnet? I show you this in another of my videos: https://www.youtube.com/watch?v=1zO9nWgI_LY The text on the magnet is german: 'Die stärksten magnete der Welt' which translates to 'The strongest magnets in the world'. This was my first HD-video on Youtube. It was shot with a Canon HF10 in 1920x1080i AVCHD and edited on a Dell Studio XPS with Pinnacle Studio HD Ultimate Collection (version 14). The recorded sound is not so good in this video because of a lot of background noise. This is not the video camera's fault. I had to shoot this video with the camera far away from the magnet and then zoom in. This is to avoid any damage to the camera from the strong magnetic field, flying shrapnel etc. In more recent HD-videos I have recorded in 1080p, since Youtubes compressor hates interlaced formats and adds the digital artifacts you see in this video.

This is a video with my big neodymium magnet (which is no longer my biggest, watch another of my videos: https://www.youtube.com/watch?v=XVv8qWZ8xzw). A powerful, yet dangerous magnet that can do amazing tricks. I've tried to make some original tricks in this video instead of just showing how much this magnet can lift (which is around 200 kg under optimal conditions). This video is really old so I had to change the audio at some point when the copyright claims started rolling all over YouTube.

This video features my biggest, baddest and most expensive laser: The Laserglow Hercules-400. It delivers over 400 mW in average af 532 nm green photons (peak 489,6 mW).

Hi. This is my first video on YouTube, and I'll be using it to test the quality. Especially the video/audio syncronization which I spend a lot of time getting right in this video - so please don't mess this up YouTube converter! The video features my best RED laser - the DX 200 mW. UPDATE: I have uploaded a new video answering the question 'Is the beam visible?´ Watch it here: https://www.youtube.com/watch?v=MfyL7IZl4_I