I finally rebuilt a project from 13 years ago… except this time I have a high speed camera! Today we're exploring waves, and how VERY careful timing of those waves can build into resonance. I've got a bunch of fun high-speed demos of waves on strings, many of which certainly fell into the "man I really just wanted to see this work, but now that I have it, it will be a great video" category :D There's also a section on the Mythbusters' incarnation of "Tesla's Earthquake Machine", and why they weren't able to use resonance to bring down a steel truss bridge. The key is ALWAYS tracking the energy, but this time, we also see where the simple resonance model breaks down, and when you would need to bring out the big math ._. So many demos demonstrate standing waves, but my goal here was to film the transient - I wanted to be able to show how those standing waves form - what does a SINGLE wave look like if you use it to build resonance? I honestly gained a much better understanding of standing waves after seeing this high speed footage, and I hope you do too! Hope you enjoy! Massive thanks to my top Patreon supporters! birdiesnbritts John Sosa Trustham Vladimir Shklovsky Aloysius Sparglepartz Jason Whatley Lohann Paterno Coutinho Ferreira Jeffrey Mckishen nothings Eugene Pakhomov Glenn Willen R520 Nick F Mirko Rener Chris Connett Tyler Filla Miles Freeman Benjamin Manns MPG Seth Reuter Danny Thomas Toby T Lucy Fur tiaz David Antoš Chris Duvarney Nick Wage John T Jack Serrino Ethan Sifferman 0:00 Building resonance with a DIY wave machine 3:14 Resonance is sensitive 5:24 MULTIPLE waves on a string? 11:00 Standing wave hero shot 12:15 Tesla's Earthquake Machine 13:54 Exponential decay 16:29 Breaking stuff costs energy 18:06 How do waves TRAVEL on strings? 20:29 When the simple model fails - big waves 25:07 Wrap up - Tacoma Narrows Media Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/ Ravenswood Bridge, Analogue Kid, Creative Commons Attribution license https://commons.wikimedia.org/wiki/File:Ravenswood_Bridge-edit.jpg

Visit https://brilliant.org/alphaphoenix/ to start your free 30-day trial, and get 20% off a premium annual subscription! Welcome back, and I hope you enjoy this mess of a three-year project… It turns out backing up in a cellular automaton can be an insanely difficult problem. This started as a "play button" project, but turned into an obsession. I recently came to the conclusion that there's no long-term winning this game (it has been shown to be NP hard, so I don't feel that bad) but AGH it should be easier than it is! Join me in this video as I dive through the much fabled Game of Life, take a hike through a very strange space, and organize a dinner party. It's going to be a great time. Check out the second channel with bonus content and Q&A videos! https://www.youtube.com/@AlphaPhoenix2 Special thanks to my top Patreon supporters! birdiesnbritts John Sosa Trustham Vladimir Shklovsky Aloysius Sparglepartz Jason Whatley Lohann Paterno Coutinho Ferreira Jeffrey Mckishen nothings Eugene Pakhomov Glenn Willen R520 Nick F Mirko Rener Chris Connett Tyler Filla Miles Freeman Benjamin Manns MPG Seth Reuter Danny Thomas Toby T Lucy Fur tiaz Chris Duvarney Nick Wage John T big bonus points to Patreon supporter david.antos for very patiently teaching me about complexity classes! https://www.patreon.com/AlphaPhoenix Media Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 E's Jammy Jams - The Entertainer YouTube Music License Silent Partner - Pink Lemonade YouTube Music License Chapters: 0:00 Conway's Game of Life 3:04 Playing GoL in reverse is hard 6:56 How to think in more dimensions 15:55 Drawing maps (both real and configurational) 19:33 The failure of gradient ascent 23:16 SAT solvers (dark CS magic) 28:54 Rephrasing the question and getting results 34:22 Brilliant.org

Join me in pursuit of one of the coolest critters anywhere (but I seem to have an abundance of them here in NC) - Dragonflies! In this video I'm breaking down dragonfly flight with a high-speed camera. Dragonflies are some pretty incredible insects, and the way they fly (or more accurately - the multiple ways they fly!) are fascinating. I hope you enjoy this journey to film, then understand, dragonfly flight in my backyard. Check out the second channel with bonus content and Q&A videos! https://www.youtube.com/@AlphaPhoenix2 Special thanks to my top Patreon supporters! birdiesnbritts John Sosa Trustham Vladimir Shklovsky Aloysius Sparglepartz Jason Whatley Lohann Paterno Coutinho Ferreira Jeffrey Mckishen nothings Eugene Pakhomov Glenn Willen R520 Nick F Mirko Rener Chris Connett Tyler Filla Miles Freeman Benjamin Manns MPG Seth Reuter Danny Thomas Toby T Lucy Fur tiaz Chris Duvarney Nick Wage John T https://www.patreon.com/AlphaPhoenix Media Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 A Far Cry - W. A. Mozart, Symphony No.38 in D major.mp3 YouTube Music License Rossini - William Tell Overture (by Rossini).mp3 YouTube Music License

This is a sequel to my last "ink tube" video, but this time I explain the title of the project, "the entropy of mixing". Entropy is a super weird topic, so I hope this makes sense, and I hope you enjoy! Special thanks to my top Patreon supporters! birdiesnbritts John Sosa Trustham Vladimir Shklovsky Aloysius Sparglepartz Jason Whatley Lohann Paterno Coutinho Ferreira Jeffrey Mckishen nothings Eugene Pakhomov Glenn Willen R520 Nick F Mirko Rener Chris Connett Tyler Filla Miles Freeman Benjamin Manns MPG Seth Reuter Danny Thomas Toby T Lucy Fur tiaz Bonus thanks to Patreon supporter PJC, who reminded me that "closed" and "isolated" systems are technically very different! Media Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 Pink Lemonade by Silent Partner is licensed under a Creative Commons license 0:00 Intro / The arrow of time 2:52 The second law of thermodynamics 3:36 Flipping coins 10:08 Marble tracking analysis 13:58 Osmosis 21:31 Microstates, multiplicity, and entropy 23:49 REVERSE osmosis

Visit https://brilliant.org/alphaphoenix/ to start your free 30-day trial, and get 20% off a premium annual subscription! This project has been kicking around in my head for years and I finally got around to building it! (Freshly inspired to make ordering/stochastic art after someone sent me a video of Ivan Miranda's awesome marble clock.) This machine separates ink from water with a reverse osmosis membrane, then mixes the ink and water back together again. It sounds circular and useless, and it is, but it's also really cool! in this first video, I focus mostly on the fluid dynamics and complexity that shows up even just in a tiny clear pipe! Special thanks to my top Patreon supporters! birdiesnbritts John Sosa Trustham Vladimir Shklovsky Aloysius Sparglepartz Jason Whatley Lohann Paterno Coutinho Ferreira Jeffrey Mckishen nothings Eugene Pakhomov Glenn Willen R520 Nick F Mirko Rener Chris Connett Tyler Filla Miles Freeman Benjamin Manns Bonus thanks to Patreon supporter Christian Wölke, who found a big error in one of my graphics! Media Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/ 0:00 What does it do? 1:48 Water is clear 2:45 Turbulent flow 4:40 Laminar flow 8:28 Fluid motion tracking 9:49 Project origin 11:38 Reverse osmosis membranes 13:05 Under the hood 16:08 Trial and error 20:27 Brilliant.org/alphaphoenix

In this video, I measure a wave of electricity traveling down a wire, and answer the question - how does electricity know where to go? How does "electricity" "decide" where electrons should be moving in wires, and how long does that process take? Spoiler alert - very fast! I've been very excited about this project for a while - it was a lot of work to figure out a reliable way to make these measurements, but I've learned SO much by actually watching waves travel down wires, and I hope you do too! There will be a Q&A about this video posted in a few weeks on the second channel, and if you head over there right now, you'll see two direct follow ups to this video with experimental details, and a section about "impedance matching" that was cut from this script. https://www.youtube.com/@AlphaPhoenix2 Special thanks to my top Patreon supporters! birdiesnbritts John Sosa Trustham Vladimir Shklovsky Aloysius Sparglepartz Ryan M Jason Whatley Lohann Paterno Coutinho Ferreira Kasper Nielsen Jeffrey Mckishen https://www.patreon.com/AlphaPhoenix Media Credits: Slomoguys clip used with permission. Thanks Gav! https://www.youtube.com/watch?v=nsJGJHkJolI I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/ 0:00 a hypothetical question 3:30 Measurement difficulties 7:44 Individual oscilloscope traces 10:23 Electricity moves through Y circuit 12:54 The single wire experiment – how electrons move 17:32 Electrons hitting a dead end 20:23 Revisiting the Y circuit 22:16 The water channel model

In this video, I try to explain electricity Ohm's Law… using a LOT of different demonstrations and analogies. I've been working on this script for like a year and a half now - this took SO long to assemble because electricity is an absolute pain to learn and to explain. I crammed every analogy to describe electricity I could think of into this video (which is why it's... oof... 40 minutes... who's going to watch this?). When I learn something hard, it's normally after I've seen it a few times before, so with a tough topic in this video, I'm trying to scatter-shot and hope that at least one demo clicks for everybody! If it DOESN'T click for you, let me know what's weird! There will be an FAQ about this video posted on the second channel in a few weeks. If you want to ask a question, drop it in the comments here, or if you want to make sure I see it, leave a note on the new Patreon Discord server! The biggest intentional omission in this video is not addressing radial charge distribution in a wire, and I know that's going to annoy some of the commenters here. I only talk about 1D wires so I don't have to confuse people by making them imagine different families of electrons at different parts of the wire when at the end of the day they can all get squished and move the same way - so please consider all of my diagrams with electrons getting "more concentrated" to be looking all the way through a wire, including the surfaces :) Also: I'm starting a Patreon! https://patreon.com/AlphaPhoenix And a second channel! https://www.youtube.com/channel/UC3GrRPAydgBn42lab2izBlg Thanks to the VERY FIRST Channel Superfans from Patreon! birdiesnbritts John Sosa Trustham Vladimir Shklovsky Chapters: 00:00 Intro to Ohm's Law 04:18 Current 06:18 Resistance 08:30 Voltage 19:43 The water Channel Model 25:06 Power and Energy 31:32 Clarifications Media Credits: Heavenly Choir, Monty Python and the Holy Grail I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Acid Jazz by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/ Move Ya by Max Surla/Media Right Productions is licensed under YouTube Music Mountain by Text Me Records is licensed under YouTube Music Vespers by Topher Mohr and Alex Elena is licensed under YouTube Music Switched on Carcassi by Brian Bolger is licensed under YouTube Music Way Out West by Chris Haugen is licensed under YouTube Music Urgent Mission, Randall Monroe, XKCD https://xkcd.com/567/

The long-awaited sequel (lol) to my first 3D printed mirrors video, where I take your advice and switch to UV-cure resin, get great results, but not good enough results, and then cheat by silvering a chunk of regular acrylic sheet! This video is a collab with (and the idea of a saddlepoint mirror was from) Steve Mould, so check out his video about this very saddlepoint mirror after you watch this! Steve's video: https://youtu.be/sP0cwLuEwsw My last video about 3D printed mirrors: https://youtu.be/SCuUQOTehqw A completely different method for obtaining 3D printed mirrors via electroplating that I didn't talk about here but is very cool: https://youtu.be/ywPi1osy7o8 The cool video I referenced about splines - relevant G2 continuity bit at 27:49 (but watch the whole thing!): https://youtu.be/jvPPXbo87ds Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

Ever wonder how electrons know where they are going? Electricity is a pretty mystifying topic, because electricity seems to be able to do impossible things, or at least things that don't make sense at a normal "human" scale. In this video I use a thermal camera to show electric current through a maze made of aluminum foil. The electric current very efficiently solves the maze, which is awesome, and heats up the "solution" so we can see it! To explain this effect, I printed out the same maze but made of plastic trenches and not metal foil. By running water through this plastic maze, we can learn something about how electrons flow in metals. This analogy does have some limitations that you need to keep in mind, but for the vast majority of cases, I think it does a FANTASTIC job at modeling bulk electron behavior in "1D" wires. At the end of the video, I have a few more mazes that have two solutions each, to test the "path of least resistance" adage. Videos referenced: "Can water solve a maze? - Steve Mould https://youtu.be/81ebWToAnvA "Why Rivers Move" - Practical Engineering https://youtu.be/UBivwxBgdPQ Also relevant: Discussion of current reflections from resistive loads @ 10:38 in this video from Electroboom and Veritasium https://youtu.be/O-WCZ8PkrK0?t=638 Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Ether by Silent Partner YouTube Music License

I needed better home internet, so I used a plastic bag and a long string. Please DON'T try this at home. It works here, but there are a lot of ways you can screw up your house doing this. Be sure to check out the subreddit: https://www.reddit.com/r/TryTryAgain/ Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

Do you ever wonder how lasers work? What makes them different from other sources of light? The answer "stimulated emission" is frequently given, but even more important is achieving "population inversion". In this video I try to explain both, starting from ground level (no pun intended). Specifically, I describe the functionality of my cnc CO2 laser cutter. I also show off a woodblock printing I made using that laser cutter, replicating the graphics from the opening of The Legend of Zelda the Wind Waker. Using watercolor paper, tea, acrylic paint, and water-soluble printing ink, I recreate the prologue for the game. Be sure to check out the subreddit: https://www.reddit.com/r/TryTryAgain/ Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Excerpt from The Legend of Zelda, the Wind Waker opening cutscene, Nintendo Excerpt from The Legend of Zelda, the Wind Waker: Battle, Koji Kondo, Nintendo Excerpt from The Legend of Zelda, the Wind Waker: Legendary Hero, Koji Kondo, Nintendo Excerpt from The Legend of Zelda, the Wind Waker: Dragon Island, Koji Kondo, Nintendo

This past spring I attended the FRC North Carolina State Championships and got to talk to a bunch of the teams. If you've never heard of FIRST Robotics, you're in for a real treat, because this competition is AWESOME. (If you haven't seen the hub video for all these interviews, check it out first! https://youtu.be/BycqWYE3Ais) These teams, thousands of them, have only about 2 months to design, build, and test robots to play a brand new game before the competitions begin, and then their work is put to the test! It would be a lot for any professional engineer, but these kids are still in high school! It's pretty incredible. This video is the complete pit interview with FIRST Team 5727. Enjoy! ------------------------------------------------------ To join or support team 5727: http://omegabytes.org/ https://www.facebook.com/omegabytes5727/ ------------------------------------------------------ If you're interested in finding a team or attending an event, here's the official team search from FIRST: https://www.firstinspires.org/team-event-search And if you want to know more about any specific team (like a link to their website) you can probably find it on Blue Alliance: https://www.thebluealliance.com/ ------------------------------------------------------ This is a world map that shows events and teams. I'm not sure how accurate it is because it doesn't look official, but it's a lot easier to search by eye! (and it also doesn't include the other FIRST programs like FLL and FTC (FRC was featured in the video)) https://frcmap.com/ ------------------------------------------------------ If you're looking to help a team as a mentor, volunteer, or sponsor: https://www.firstinspires.org/support ------------------------------------------------------ Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

This past spring I attended the FRC North Carolina State Championships and got to talk to a bunch of the teams. If you've never heard of FIRST Robotics, you're in for a real treat, because this competition is AWESOME. (If you haven't seen the hub video for all these interviews, check it out first! https://youtu.be/BycqWYE3Ais) These teams, thousands of them, have only about 2 months to design, build, and test robots to play a brand new game before the competitions begin, and then their work is put to the test! It would be a lot for any professional engineer, but these kids are still in high school! It's pretty incredible. This video is the complete pit interview with FIRST Team 587. Enjoy! ------------------------------------------------------ To join or support team 587: https://www.team587.org/ ------------------------------------------------------ If you're interested in finding a team or attending an event, here's the official team search from FIRST: https://www.firstinspires.org/team-event-search And if you want to know more about any specific team (like a link to their website) you can probably find it on Blue Alliance: https://www.thebluealliance.com/ ------------------------------------------------------ This is a world map that shows events and teams. I'm not sure how accurate it is because it doesn't look official, but it's a lot easier to search by eye! (and it also doesn't include the other FIRST programs like FLL and FTC (FRC was featured in the video)) https://frcmap.com/ ------------------------------------------------------ If you're looking to help a team as a mentor, volunteer, or sponsor: https://www.firstinspires.org/support ------------------------------------------------------ Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

This past spring I attended the FRC North Carolina State Championships and got to talk to a bunch of the teams. If you've never heard of FIRST Robotics, you're in for a real treat, because this competition is AWESOME. (If you haven't seen the hub video for all these interviews, check it out first! https://youtu.be/BycqWYE3Ais) These teams, thousands of them, have only about 2 months to design, build, and test robots to play a brand new game before the competitions begin, and then their work is put to the test! It would be a lot for any professional engineer, but these kids are still in high school! It's pretty incredible. This video is the complete pit interview with FIRST Team 3737. Enjoy! ------------------------------------------------------ To join or support team 3737: https://rotoraptors.wixsite.com/team3737 ------------------------------------------------------ If you're interested in finding a team or attending an event, here's the official team search from FIRST: https://www.firstinspires.org/team-event-search And if you want to know more about any specific team (like a link to their website) you can probably find it on Blue Alliance: https://www.thebluealliance.com/ ------------------------------------------------------ This is a world map that shows events and teams. I'm not sure how accurate it is because it doesn't look official, but it's a lot easier to search by eye! (and it also doesn't include the other FIRST programs like FLL and FTC (FRC was featured in the video)) https://frcmap.com/ ------------------------------------------------------ If you're looking to help a team as a mentor, volunteer, or sponsor: https://www.firstinspires.org/support ------------------------------------------------------ Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

This past spring I attended the FRC North Carolina State Championships and got to talk to a bunch of the teams. If you've never heard of FIRST Robotics, you're in for a real treat, because this competition is AWESOME. (If you haven't seen the hub video for all these interviews, check it out first! https://youtu.be/BycqWYE3Ais) These teams, thousands of them, have only about 2 months to design, build, and test robots to play a brand new game before the competitions begin, and then their work is put to the test! It would be a lot for any professional engineer, but these kids are still in high school! It's pretty incredible. This video is the complete pit interview with FIRST Team 8634. Enjoy! ------------------------------------------------------ I don't have a link to 8634's homepage (let me know and I'll update!), but here's their BlueAlliance page: https://www.thebluealliance.com/team/8634 ------------------------------------------------------ If you're interested in finding a team or attending an event, here's the official team search from FIRST: https://www.firstinspires.org/team-event-search And if you want to know more about any specific team (like a link to their website) you can probably find it on Blue Alliance: https://www.thebluealliance.com/ ------------------------------------------------------ This is a world map that shows events and teams. I'm not sure how accurate it is because it doesn't look official, but it's a lot easier to search by eye! (and it also doesn't include the other FIRST programs like FLL and FTC (FRC was featured in the video)) https://frcmap.com/ ------------------------------------------------------ If you're looking to help a team as a mentor, volunteer, or sponsor: https://www.firstinspires.org/support ------------------------------------------------------ Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

This past spring I attended the FRC North Carolina State Championships and got to talk to a bunch of the teams. If you've never heard of FIRST Robotics, you're in for a real treat, because this competition is AWESOME. (If you haven't seen the hub video for all these interviews, check it out first! https://youtu.be/BycqWYE3Ais) These teams, thousands of them, have only about 2 months to design, build, and test robots to play a brand new game before the competitions begin, and then their work is put to the test! It would be a lot for any professional engineer, but these kids are still in high school! It's pretty incredible. This video is the complete pit interview with FIRST Team 6502. Enjoy! ------------------------------------------------------ To join or support team 6502: https://6502.team/ https://www.da.org/thedaexperience/upper-school/competitive-academic-teams/robotics ------------------------------------------------------ If you're interested in finding a team or attending an event, here's the official team search from FIRST: https://www.firstinspires.org/team-event-search And if you want to know more about any specific team (like a link to their website) you can probably find it on Blue Alliance: https://www.thebluealliance.com/ ------------------------------------------------------ This is a world map that shows events and teams. I'm not sure how accurate it is because it doesn't look official, but it's a lot easier to search by eye! (and it also doesn't include the other FIRST programs like FLL and FTC (FRC was featured in the video)) https://frcmap.com/ ------------------------------------------------------ If you're looking to help a team as a mentor, volunteer, or sponsor: https://www.firstinspires.org/support ------------------------------------------------------ Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

This past spring I attended the FRC North Carolina State Championships and got to talk to a bunch of the teams. If you've never heard of FIRST Robotics, you're in for a real treat, because this competition is AWESOME. (If you haven't seen the hub video for all these interviews, check it out first! https://youtu.be/BycqWYE3Ais) These teams, thousands of them, have only about 2 months to design, build, and test robots to play a brand new game before the competitions begin, and then their work is put to the test! It would be a lot for any professional engineer, but these kids are still in high school! It's pretty incredible. This video is the complete pit interview with FIRST Team 2642. Enjoy! ------------------------------------------------------ To join or support team 2642: http://www.pittpiratesrobotics.com/ ------------------------------------------------------ If you're interested in finding a team or attending an event, here's the official team search from FIRST: https://www.firstinspires.org/team-event-search And if you want to know more about any specific team (like a link to their website) you can probably find it on Blue Alliance: https://www.thebluealliance.com/ ------------------------------------------------------ This is a world map that shows events and teams. I'm not sure how accurate it is because it doesn't look official, but it's a lot easier to search by eye! (and it also doesn't include the other FIRST programs like FLL and FTC (FRC was featured in the video)) https://frcmap.com/ ------------------------------------------------------ If you're looking to help a team as a mentor, volunteer, or sponsor: https://www.firstinspires.org/support ------------------------------------------------------ Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

This past spring I attended the FRC North Carolina State Championships and got to talk to a bunch of the teams. If you've never heard of FIRST Robotics, you're in for a real treat, because this competition is AWESOME. (If you haven't seen the hub video for all these interviews, check it out first! https://youtu.be/BycqWYE3Ais) These teams, thousands of them, have only about 2 months to design, build, and test robots to play a brand new game before the competitions begin, and then their work is put to the test! It would be a lot for any professional engineer, but these kids are still in high school! It's pretty incredible. This video is the complete pit interview with FIRST Team 8727. Enjoy! ------------------------------------------------------ To join or support team 8727: https://www.glitch8727.com/ ------------------------------------------------------ If you're interested in finding a team or attending an event, here's the official team search from FIRST: https://www.firstinspires.org/team-event-search And if you want to know more about any specific team (like a link to their website) you can probably find it on Blue Alliance: https://www.thebluealliance.com/ ------------------------------------------------------ This is a world map that shows events and teams. I'm not sure how accurate it is because it doesn't look official, but it's a lot easier to search by eye! (and it also doesn't include the other FIRST programs like FLL and FTC (FRC was featured in the video)) https://frcmap.com/ ------------------------------------------------------ If you're looking to help a team as a mentor, volunteer, or sponsor: https://www.firstinspires.org/support ------------------------------------------------------ Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

The electrons are back! This is the first of three videos discussing electricity - what is it, how does it work, how do we use it? This first installment talks about the speed of electricity and electrical signals in wires. Next up is Ohm's law, and what resistance really does in circuits, and third, I'll be taking another look at the experiment featured on Veritasium last year, building on the first two videos to explore the mechanism that couples the two long wires with a little more scrutiny. Enjoy! Be sure to check out the subreddit: https://www.reddit.com/r/TryTryAgain/ Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

This past spring I attended the FRC North Carolina State Championships and got to talk to a bunch of the teams. If you've never heard of FIRST Robotics, you're in for a real treat, because this competition is AWESOME. These teams, thousands of them, have only about 2 months to design, build, and test robots to play a brand new game before the competitions begin, and then their work is put to the test! It would be a lot for any professional engineer, but these kids are still in high school! It's pretty incredible. Stay tuned for all of the individual pit interviews! If you're interested in finding a team or attending an event, here's the official team search from FIRST: https://www.firstinspires.org/team-event-search And if you want to know more about any specific team (like a link to their website) you can probably find it on Blue Alliance: https://www.thebluealliance.com/ If you're looking to help a team as a mentor, volunteer, or sponsor: https://www.firstinspires.org/support If you're specifically interested in one of the teams I mentioned or featured, here are links to them all! ------------------------------------------------------ 435, Robodogs https://www.robodogs.org/ ------------------------------------------------------ 451, The Cat Attack http://thecatattack.org/ ------------------------------------------------------ 587, The Hedgehogs https://www.team587.org/ ------------------------------------------------------ 2059, The Hitchikers https://team2059.org/blog/ ------------------------------------------------------ 2642, Pitt Pirates http://www.pittpiratesrobotics.com/ ------------------------------------------------------ 3737, Roto Raptors https://rotoraptors.wixsite.com/team3737 ------------------------------------------------------ 5727, OmegaBytes http://omegabytes.org/ https://www.facebook.com/omegabytes5727/ ------------------------------------------------------ 6502, Darc Side https://6502.team/ https://www.da.org/thedaexperience/upper-school/competitive-academic-teams/robotics ------------------------------------------------------ 7443, Overhills Jag-Wires https://www.facebook.com/jagwires7443/ ------------------------------------------------------ 8634, Bootstraps! https://www.thebluealliance.com/team/8634 ------------------------------------------------------ 8727, Glitch 2.0 https://www.glitch8727.com/ ------------------------------------------------------ (if anybody watching this is FROM one of these teams and wants me to change/update/add a link, let me know!) Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 #robots #STEAM #firstrobotics

I've had piles and piles of questions about the research that I did in gradschool, so here it is! Be careful what you wish for... About a year ago I defended my dissertation from UCSB in Materials, exploring, among other things, growth of a semiconductor called lead selenide, a narrow-gap material with a bright (ba-dum-tss) future in the realm of infrared optoelectronics. I hope you enjoy! For more information than you could ever reasonably desire: https://escholarship.org/content/qt9mj491xk/qt9mj491xk.pdf Viewers of the channel are probably going to be most interested in all the fun machines featured in chapter 2, "Experimental Methods" - Molecular beam epitaxy (making crystals in ultra high vacuum) - X-ray diffraction (explained with almost no math) - Electron microscopy (many variants) Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

Today's video is about my favorite microscope ever. I did a lot of work in gradschool on this STEM, or Scanning Transmission Electron Microscope, and today I get to share how it works! Extra thanks to the Materials Department at UCSB for letting me film in the lab! Admittedly it's old footage, but since it's REAL research, I was waiting for the paper to get published. If anybody's super-curious, here's the doi: https://pubs.acs.org/doi/10.1021/acs.cgd.2c00188 (unfortunately it's not indexed on SciHub yet - I'm trying to figure out how to get the manuscript posted elsewhere for you guys - check back in a couple days if you're curious!) Music and graphics: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Map of Kikuchi line pairs down to 1/1Å for 300 keV electrons in hexagonal sapphire (Al2O3), with some intersections labeled P. Fraundorf https://creativecommons.org/licenses/... The Quantum Realm by The Whole Other YouTube Audio Library License Memes: Shrek (Dreamworks) Pokemon (Nintendo)

A real lunar eclipse is DARK - the red moon is super faint, and it doesn't illuminate the clouds around it the way the regular sunlit moon does. Using two cameras, a tracker, and a bit of math. I created a video that's hopefully closer to what the human eye sees than what any single auto-exposing camera would be able to manage. There's a lot more info about the process in the full video: https://youtu.be/6R-iMmcQ5aI Music in this video: The Empty Moons of Jupiter by DivKid I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

Hey everyone! it's been nearly a month since the eclipse and I'm FINALLY ready to publish my timelapse - you'll see why it took so long in this video... I set up two cameras and did an extremely crude high dynamic range stack that is able to resolve some detail on the sunlit moon, and some detail on the shadowed moon, simultaneously. I wish I'd taken 6 pictures at once, and that they were easy to align, so that I could have a full lograithmic-ish HDR picture, but for now, this is my best eclipse timelapse yet. I hope you like it! Short version: https://youtube.com/shorts/yXhzfPT29es Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

I built a Turboencabulator! Inspiration from Bud Haggert, who I first saw explain this fantastic machine while I was on a robotics team in high school https://www.youtube.com/watch?v=Ac7G7xOG2Ag Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/

If you think about idealized physics scenarios, "frictionless vacuum" or "ignore air resistance" may come to mind, but another even more ubiquitous mechanical approximation is the so-called "rigid body approximation" where solid objects are said to be perfect geometric shapes that don't deform at all when force is applied. For a LOT of classical mechanics and mechanical engineering, it's a fantastic approximation, but like all approximations, eventually it breaks down. Today I'm demonstrating a failure of the rigid body approximation by asking "When you apply a force to one edge of an object and it starts moving, does the rest of the object actually lag behind? and if so, by how much? Hope you enjoy the experiment! Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

I constructed the Veritasium electricity thought experiment in real life to test the result. If you were watching my community posts a month ago, the day that Derek over on Veritasium posted his video about electricity misconceptions, you saw me obsess over that problem a bit too much and immediately use it as the excuse I've been looking for for years to own my own oscilloscope. Instead of two light-seconds of wire, I used about 3 light-microseconds of wire, but it was PLENTY to resolve exactly what is happening in this circuit. I hope you enjoy the analysis! Thanks to Derek at Veritasium for his blessing to make a real-world version of his gedanken experiment. If you haven't seen his video yet, you might want to go watch that for context, and I also highly recommend ElectroBOOM's video on the topic and EEVBlog's video on the topic. Electroboom's video has some simulated scope traces extremely close to what I saw IRL, and a REALLY fantastic animation (8:27) of him waving an electron around in his hand, shedding magnetic fields as it moves (Even though I ignore magnetic fields in this video - I'm trying to think of a test to find out if they matter). Veritasium https://youtu.be/bHIhgxav9LY ElectroBOOM https://youtu.be/iph500cPK28 EEVBlog https://youtu.be/VQsoG45Y_00 Music Credits, etc.: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

So it's been almost 2 years since I said the random-number-machine follow-up video was coming "soon", and it's finally time! (Combined with a fun bit of math regarding perfect shuffles in reply to a fascinating Matt Parker video) If you take a histogram of the wait times between geiger tube ticks, you get a beautiful exponential decay curve - most gaps between ticks are extremely fast, and it's rare to go a long time without a tick. You can use this property of random numbers to show that ticks coming from a tube are indeed randomly distributed. Conveniently, runs of interleaved cards in shuffled decks of cards ALSO follow this exponential decay distribution, with short runs representing short wait times between ticks and very long runs of perfectly interleaved cards being rare, just like long wait times between geiger tube ticks. Because these properties of random numbers are so predictable, you can actually calculate the probability of executing a "perfect" or "Farro" shuffle by accident. Music Credits, etc.: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/

After a bit of a hiatus, AlphaPhoenix is live again! In this video I print some parts, coat them in resin, and chemically silver that resin surface, making a first-surface mirror akin to telescope optics but MUCH less precise. (also I use said silvering process to make a play button with actual silver!) Hope you enjoy the classic story of scientific failure and iteration, and maybe learn something about mirrors while you're here! If anybody is curious to try this themselves, this is very much not a sponsored video, but I was using Smooth-On's XTC-3D as my smoothing agent and Angel Guilding's Spray-Silvering chemicals to deposit the silver. if anybody knows more about these products that might explain some of the difficulties I've had, I'd be all ears! Technique loosely based on this very interesting paper from Vaidya and Solgaard: https://www.researchgate.net/publication/326424393_3D_printed_optics_with_nanometer_scale_surface_roughness Music Credits, etc.: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/ Till With Bell.wav from Benboncan is licensed under a Creative Commons Attribution license Arecibo Telescope picture - David Broad

If you're a long-time viewer, you'll know that I *really* like random numbers. Today, I'm USING random numbers to generate some distinctly nonrandom maps. I first heard of Monte Carlo simulations in undergraduate computational physics, and have long thought about using it to draw maps with optimized districts. (see "Ising model" for a very similar physics simulation). I wrote a program to draw maps of Gerrymandered (or not) congressional districts in the state of North Carolina. I'm not getting into the methods and politics, I just think gerrymandering is a fascinating problem to solve, and the Monte Carlo simulation is great at it! You program in an initial condition, and your "desired election results", and the program handles the rest, adjusting the map pixel-by-pixel until it aligns to your desired metrics (and either a really GOOD map, or a really BAD map). Sharable GIF: https://gfycat.com/illfatedgargantuankusimanse Extra links for the curious: https://en.wikipedia.org/wiki/Ising_model https://en.wikipedia.org/wiki/Markov_chain_Monte_Carlo https://en.wikipedia.org/wiki/Metropolis%E2%80%93Hastings_algorithm https://en.wikipedia.org/wiki/Gerrymandering Source for election data by precinct (note that precincts and Census tracts are not the same shapes): https://openprecincts.org/ #Gerrymandering #Politics #Math Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/ Dial Up Internet Sound BY SPANAC, Attribution 4.0 International (CC BY 4.0) http://www.freesoundslibrary.com

For my 2^14 subscriber play button, I decided to make a blueprint (cyanotype print) using Ware's "New Cyanotype" chemistry, some printed out transparencies, and ultraviolet light from the sun! But that wasn't quite enough - I wanted to go beyond prints and build a CAMERA - a giant analog camera. Instead of a physical mask that blocks light, a camera uses a lens to focus light onto a piece of chemically sensitized film or paper to form an image. In my case, a very large image on a very large piece of paper… My camera exposes on 11x15" sheets of watercolor paper, and takes about a day to take a photograph. After a water bath, they're ready to go straight on the wall! #Photography #DIY # Chemistry Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

Took a break from Dissertation-y things today to visit Vandenberg and watch a Delta IV Heavy take off! The Delta IV Heavy is an enormously powerful rocket and it's pretty awesome to watch one in person. I took my new tripod rig and got some great footage despite the awful ground-level wind. #ULA #RocketLaunch #Space Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

Bonus footage from episode 3 of my ice crystal growth project - lots of timelapses! Other videos in this series: The Sound of Freezing, Explained! https://youtu.be/Wd_c0A8u3lw The Sound of Freezing (Bonus Footage) https://youtu.be/hpzutKRSukw What is polycrystalline water? https://youtu.be/g7ONBuVtz-w A DIY Recipe for Giant Hexagonal Ice Crystals https://youtu.be/L0SYxpVab6M Big Hexagons of Ice 2: Thermoelectric Boogaloo https://youtu.be/VA710QYxEu0 Growing Giant Snowflakes (Timelapse Supercut) https://youtu.be/MqIvuWsd5OI Check out the other social media for updates and ramblings: https://twitter.com/Alpha__Phoenix https://www.reddit.com/r/TryItAgain/ Interesting articles for the extra-curious: J.M. Adams, W. Lewis, The Production of Large Single Crystals of Ice, Rev. Sci. Instrum. 5 (1934) 400–402. doi:10.1063/1.1751759. T. Shichiri, Faceted ice crystals grown in water without air, J. Cryst. Growth. 187 (1998) 133–137. doi:10.1016/S0022-0248(97)00839-7. P. Bisson, H. Groenzin, I.L. Barnett, M.J. Shultz, High yield, single crystal ice via the Bridgman method, Rev. Sci. Instrum. 87 (2016) 034103. doi:10.1063/1.4944481. A. Cahoon, M. Maruyama, J.S. Wettlaufer, Growth-Melt Asymmetry in Crystals and Twelve-Sided Snowflakes, Phys. Rev. Lett. 96 (2006) 255502. doi:10.1103/PhysRevLett.96.255502. T. Gonda, The Growth of Small Ice Crystals in Gases of High and Low Pressures, C, J. Meteorol. Soc. Japan. Ser. II. 55 (1977) 142–146. doi:10.2151/jmsj1965.55.1_142. Y. Furukawa, S. Kohata, Temperature dependence of the growth form of negative crystal in an ice single crystal and evaporation kinetics for its surfaces, J. Cryst. Growth. 129 (1993) 571–581. doi:10.1016/0022-0248(93)90493-G. N.N. Khusnatdinov, V.F. Petrenko, Fast-growth technique for ice single crystals, J. Cryst. Growth. 163 (1996) 420–425. doi:10.1016/0022-0248(95)00980-9. D. v. d. S. Roos, Rapid Production of Single Crystals of Ice, J. Glaciol. 14 (1975) 325–328. doi:10.3189/s0022143000021808. #Materials #Physics #Crystals Music and images in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Vespers - Topher Mohr and Alex Elena

A DIY Recipe for Giant Hexagonal Ice Crystals Episode 3-and-a-half (the final episode) of my series on water ice! In this video I discuss the vapor grown ice crystals with a bit more science, and a lot more timelapses! It's amazing what you can learn aout a physical process when you can photograph it continuously for weeks… Other videos in this series: The Sound of Freezing, Explained! https://youtu.be/Wd_c0A8u3lw The Sound of Freezing (Bonus Footage) https://youtu.be/hpzutKRSukw What is polycrystalline water? https://youtu.be/g7ONBuVtz-w A DIY Recipe for Giant Hexagonal Ice Crystals https://youtu.be/L0SYxpVab6M Big Hexagons of Ice 2: Thermoelectric Boogaloo https://youtu.be/VA710QYxEu0 Growing Giant Snowflakes (Timelapse Supercut) https://youtu.be/MqIvuWsd5OI Check out the other social media for updates and ramblings: https://twitter.com/Alpha__Phoenix https://www.reddit.com/r/TryItAgain/ Interesting articles for the extra-curious: J.M. Adams, W. Lewis, The Production of Large Single Crystals of Ice, Rev. Sci. Instrum. 5 (1934) 400–402. doi:10.1063/1.1751759. T. Shichiri, Faceted ice crystals grown in water without air, J. Cryst. Growth. 187 (1998) 133–137. doi:10.1016/S0022-0248(97)00839-7. P. Bisson, H. Groenzin, I.L. Barnett, M.J. Shultz, High yield, single crystal ice via the Bridgman method, Rev. Sci. Instrum. 87 (2016) 034103. doi:10.1063/1.4944481. A. Cahoon, M. Maruyama, J.S. Wettlaufer, Growth-Melt Asymmetry in Crystals and Twelve-Sided Snowflakes, Phys. Rev. Lett. 96 (2006) 255502. doi:10.1103/PhysRevLett.96.255502. T. Gonda, The Growth of Small Ice Crystals in Gases of High and Low Pressures, C, J. Meteorol. Soc. Japan. Ser. II. 55 (1977) 142–146. doi:10.2151/jmsj1965.55.1_142. Y. Furukawa, S. Kohata, Temperature dependence of the growth form of negative crystal in an ice single crystal and evaporation kinetics for its surfaces, J. Cryst. Growth. 129 (1993) 571–581. doi:10.1016/0022-0248(93)90493-G. N.N. Khusnatdinov, V.F. Petrenko, Fast-growth technique for ice single crystals, J. Cryst. Growth. 163 (1996) 420–425. doi:10.1016/0022-0248(95)00980-9. D. v. d. S. Roos, Rapid Production of Single Crystals of Ice, J. Glaciol. 14 (1975) 325–328. doi:10.3189/s0022143000021808. #Materials #Physics #Crystals Music and images in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/ https://en.wikipedia.org/wiki/Snowflake#/media/File:Snowflake_macro_photography_1.jpg

Welcome to my first meta-video! Today we will be taking a break from physical science (It'l be back tomorrow) and entering the realm of computer science, with a YouTube video about impressions and the recommendation algorithm that has a self-referential updating thumbnail that tells you how many people have seen the thumbnail! I also introduce the "CTR-Watch-Time Product" as a metric for video success, effectively the additional time YouTube expects to retain a viewer by showing them a thumbnail. It's an interesting metric when youtube is behaving normally, and for videos of similar length. At the end, I go into some detail on the python script that's actually updating this thumbnail all the time. Warning: it's absolutely horrendous code… #YouTube #Algorithm #CTRWtP Music etc. in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Deep Thought - The Hitchhiker's Guide to the Galaxy Patrick "push it somewhere else" meme - Spongebob Squarepants Purple Crewmate - Among Us GlaDOS voice and screenshot - Portal/Portal 2 by Valve https://commons.wikimedia.org/wiki/File:CSIRO_ScienceImage_2042_A_row_of_computer_servers_in_a_server_rack.jpg Slack quotes from other YouTubers used with permission

Episode 3 of my series on water ice! In this video I walk through my process for vapor-growing single crystals of ice. Starting with a small single-crystal substrate, a large crystal can be grown by depositing vapor. I use a vacuum chamber to evaporate/sublimate water at about -20 celcius, then a peltier cooler to deposit that water vapor back into a solid. The awesome thing is how crystallographic the samples look - lots beautiful hexagonal facets! Extra special thanks to Steve Mould for a fantastic explanation of the thermoelectric effect: https://youtu.be/O6waiEeXDGo Other videos in this series: The Sound of Freezing, Explained! https://youtu.be/Wd_c0A8u3lw The Sound of Freezing (Bonus Footage) https://youtu.be/hpzutKRSukw What is polycrystalline water? https://youtu.be/g7ONBuVtz-w A DIY Recipe for Giant Hexagonal Ice Crystals https://youtu.be/L0SYxpVab6M Big Hexagons of Ice 2: Thermoelectric Boogaloo [TBD] Check out the other social media for updates and ramblings: https://www.reddit.com/r/TryItAgain/ https://twitter.com/Alpha__Phoenix Interesting articles for the extra-curious: J.M. Adams, W. Lewis, The Production of Large Single Crystals of Ice, Rev. Sci. Instrum. 5 (1934) 400–402. doi:10.1063/1.1751759. T. Shichiri, Faceted ice crystals grown in water without air, J. Cryst. Growth. 187 (1998) 133–137. doi:10.1016/S0022-0248(97)00839-7. P. Bisson, H. Groenzin, I.L. Barnett, M.J. Shultz, High yield, single crystal ice via the Bridgman method, Rev. Sci. Instrum. 87 (2016) 034103. doi:10.1063/1.4944481. A. Cahoon, M. Maruyama, J.S. Wettlaufer, Growth-Melt Asymmetry in Crystals and Twelve-Sided Snowflakes, Phys. Rev. Lett. 96 (2006) 255502. doi:10.1103/PhysRevLett.96.255502. T. Gonda, The Growth of Small Ice Crystals in Gases of High and Low Pressures, C, J. Meteorol. Soc. Japan. Ser. II. 55 (1977) 142–146. doi:10.2151/jmsj1965.55.1_142. Y. Furukawa, S. Kohata, Temperature dependence of the growth form of negative crystal in an ice single crystal and evaporation kinetics for its surfaces, J. Cryst. Growth. 129 (1993) 571–581. doi:10.1016/0022-0248(93)90493-G. N.N. Khusnatdinov, V.F. Petrenko, Fast-growth technique for ice single crystals, J. Cryst. Growth. 163 (1996) 420–425. doi:10.1016/0022-0248(95)00980-9. D. v. d. S. Roos, Rapid Production of Single Crystals of Ice, J. Glaciol. 14 (1975) 325–328. doi:10.3189/s0022143000021808. #Materials #Physics #Crystals Music and images in this video: Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/ I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Space Walk by Silent Partner is licensed under a Creative Commons license https://en.wikipedia.org/wiki/Snowflake#/media/File:Snowflake_macro_photography_1.jpg

Episode 2 of my series on water ice! Admittedly this is probably the least interesting because it's some negative results, but it's not very scientific to only discuss successes right? In this video, I use a lens to melt ice from the inside out, exposing it's polycrystalline structure (and explain how it's different from a single crystal). With this partially-melted ice, I can do a bit of materials forensics, and actually figure out how it formed, hopefully so I can improve the process in the future! Next video will be on vapor growth, and I'll say right now that it DOES work to grow centimeters-big faceted single crystals! Subscribe to make sure you see it! CORRECTIONS: [none yet!] Other videos in this series: The Sound of Freezing, Explained! https://youtu.be/Wd_c0A8u3lw The Sound of Freezing (Bonus Footage) https://youtu.be/hpzutKRSukw What is polycrystalline water? https://youtu.be/g7ONBuVtz-w Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix https://reddit.com/r/tryitagain Interesting articles for the extra-curious: J.M. Adams, W. Lewis, The Production of Large Single Crystals of Ice, Rev. Sci. Instrum. 5 (1934) 400–402. doi:10.1063/1.1751759. T. Shichiri, Faceted ice crystals grown in water without air, J. Cryst. Growth. 187 (1998) 133–137. doi:10.1016/S0022-0248(97)00839-7. P. Bisson, H. Groenzin, I.L. Barnett, M.J. Shultz, High yield, single crystal ice via the Bridgman method, Rev. Sci. Instrum. 87 (2016) 034103. doi:10.1063/1.4944481. A. Cahoon, M. Maruyama, J.S. Wettlaufer, Growth-Melt Asymmetry in Crystals and Twelve-Sided Snowflakes, Phys. Rev. Lett. 96 (2006) 255502. doi:10.1103/PhysRevLett.96.255502. T. Gonda, The Growth of Small Ice Crystals in Gases of High and Low Pressures, C, J. Meteorol. Soc. Japan. Ser. II. 55 (1977) 142–146. doi:10.2151/jmsj1965.55.1_142. Y. Furukawa, S. Kohata, Temperature dependence of the growth form of negative crystal in an ice single crystal and evaporation kinetics for its surfaces, J. Cryst. Growth. 129 (1993) 571–581. doi:10.1016/0022-0248(93)90493-G. N.N. Khusnatdinov, V.F. Petrenko, Fast-growth technique for ice single crystals, J. Cryst. Growth. 163 (1996) 420–425. doi:10.1016/0022-0248(95)00980-9. D. v. d. S. Roos, Rapid Production of Single Crystals of Ice, J. Glaciol. 14 (1975) 325–328. doi:10.3189/s0022143000021808. Example of "single crystal casting" through a corkscrew shaped crucible for turbine blades http://040b.synthasite.com/resources/120b.pdf #Materials #Physics #Crystals Music and images in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 https://en.wikipedia.org/wiki/Bridgman%E2%80%93Stockbarger_method#/media/File:Bridgman-Stockbarger-Technique.svg https://en.wikipedia.org/wiki/Snowflake#/media/File:Snowflake_macro_photography_1.jpg

As the holiday season draws near (or almost misses me this year with how fast everything's moving) I took the time to make a batch of AlphaPhoenix-branded Christmas cookies! #Baking #3Dprinting #Christmas Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

Arecibo was condemned a couple weeks ago, and collapsed a couple days ago as a result of a minor earthquake and well-overdue maintenance. Unfortunately, this deprives the world of its largest Radar Telescope, and radar telescopes are awesome! I've had a really hard time in the past finding good descriptions of how radar astronomy actually works - how do you take a picture of something so far away that the beam diverges by the time it gets there, and diverges even more by the time it gets back!? The answer is math and approximation. Asteroid "images" are actually not any sort of photograph, but reconstructions based on timing and spectroscopy of radar signals. I'm really happy with how all the animations and whatnot came out, and I hope you like my explanation of delay-doppler imaging! I think it's an absolutely fascinating technique that's seen as just too counterintuitive to get a lot of recognition. Delay-Doppler images aren't really "pictures", but they are sure valuable to researchers (and every human living on Earth under threat of asteroid impact!) Share this video with anybody who wants to appreciate how important Arecibo was, and what such an awesome unique instrument was capable of. #Arecibo #RebuildTheAreciboObservatory #Asteroids Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Other media in this video: Lots of public-domain NASA images, and: https://commons.wikimedia.org/wiki/File:Arecibo_Radiotelescopio_Panamorama_SJU_06_2019_7446.jpg https://commons.wikimedia.org/wiki/File:Arecibo_radio_telescope_SJU_06_2019_6144.jpg https://commons.wikimedia.org/wiki/File:Arecibo_Radiotelescopio_SJU_06_2019_7472.jpg https://commons.wikimedia.org/wiki/File:Arecibo_radio_telescope_SJU_06_2019_7497.jpg https://commons.wikimedia.org/wiki/File:Arecibo_Observatory_1982_(2).jpg https://commons.wikimedia.org/wiki/File:Arecibo_naic_big.png https://en.wikipedia.org/wiki/Microwave_oven#/media/File:1971rr4.jpg https://commons.wikimedia.org/wiki/File:Kalalau_Valley_viewed_from_the_Na_Pali_Kona_Forest_Reserve_Pihea_Trail.jpg https://commons.wikimedia.org/wiki/File:Auersberg_ATC_radar_antenna_rotating.ogv https://commons.wikimedia.org/wiki/File:Video_airport_radar_MEM_Memphis_TN.theora.ogv https://en.wikipedia.org/wiki/Moon#/media/File:FullMoon2010.jpg https://en.wikipedia.org/wiki/Klystron#/media/File:Klystron.jpg https://en.wikipedia.org/wiki/Azimuthal_equidistant_projection#/media/File:Azimuthal_equidistant_projection_SW.jpg https://en.wikipedia.org/wiki/Azimuthal_equidistant_projection#/media/File:Azimuthal_equidistant_projection_south_SW.jpg https://commons.wikimedia.org/wiki/File:ZA_Radar_Gun.jpg https://commons.wikimedia.org/wiki/File:Triceratops_prorsus_Restoration.jpg https://commons.wikimedia.org/wiki/File:Velociraptor-by-Salvatore-Rabito-Alc%C3%B3n.jpg

I'm an avid surfer, and have been wanting to make a video about the physics of surfing for a long time! There's an art to catching a big wave without crashing, and in this video I explain the physical principles that enable all of it! A surfer harvests energy from a wave, effectively by positioning themselves on a moving ramp with very little friction - or really sort of directional friction, as I'll explain in the video. Once standing on a wave, you can play a lot of games with the angle of the board to change direction and accelerate, sometimes actually going faster across the water than the wave you're riding! The footage showing angled motion on a wave comes courtesy of my brand new quadcopter which will surely be appearing in many videos in the future! shareable GIFs: https://gfycat.com/coarsefamiliarkoi Music and stuff: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 Pink Lemonade by Silent Partner is licensed under a Creative Commons license Image credits: Still from Mythbusters Clip "Riding a Shockwave" https://go.discovery.com/tv-shows/mythbusters/videos/riding-a-shockwave Bell X-1 rocket-powered experimental aircraft - public domain https://en.wikipedia.org/wiki/Bell_X-1#/media/File:Bell_X-1_46-062_(in_flight).jpg Wingsuit jump by Wingsuiting https://commons.wikimedia.org/wiki/File:Wingsuit_Flying_over_Langar_Airfield_UK.jpg Fin hat from Margaritaville Caribbean Shop https://margaritavillecaribbeanshop.com/collections/hats/products/margaritaville-fins-up-shark-hat #physics #surfing #waves

For the last few months I've been experimenting with ways to grow ice crystals, and while there's a lot to come on that front (Subscribe for the rest!), welcome to Episode 1: The Sound of Freezing! This video is just a compilation of dendritic growth's greatest hits (at least everything I recorded, minus all the waiting for it to freeze part!) All of the clips I used in the main video in their full form (and a pitch-shifted version of the final clip so you can hear it!) Enjoy! CORRECTIONS: [none yet!] Other videos in this series: The Sound of Freezing, Explained! https://youtu.be/Wd_c0A8u3lw The Sound of Freezing (Bonus Footage) https://youtu.be/hpzutKRSukw What is polycrystalline water? https://youtu.be/g7ONBuVtz-w Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix #Materials #Physics #Crystals Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

For the last few months I've been experimenting with ways to grow ice crystals, and while there's a lot to come on that front (Subscribe for the rest!), welcome to Episode 1: The Sound of Freezing! The vacuum-evaporation setup I used to freeze water in this video was one of the first I tried, and it wasn't until recently I realized that I had inadvertently recorded the SOUND of freezing water - I didn't think it was possible (and I thought freezing water wouldn't make a sound). In this video I explain dendritic growth of crystals, freezing water ice from supercooled liquid, and propose a source for the crackling noise that seems to accompany the formation of ice crystals! Enjoy! CORRECTIONS: [none yet!] Other videos in this series: The Sound of Freezing, Explained! https://youtu.be/Wd_c0A8u3lw The Sound of Freezing (Bonus Footage) https://youtu.be/hpzutKRSukw What is polycrystalline water? https://youtu.be/g7ONBuVtz-w Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix #Materials #Physics #Crystals Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

I've posted a few videos about awesome equipment I get to use in the lab (and plan to post many more because big fancy machines are awesome) but I haven't actually explained any of my research on the channel! Well that ends today, with a real honest-to-goodness conference talk I gave this January. In our lab, we grow "rocksalt" PbSe crystals (with a structure that looks like a 3D checkerboard) on top of "zincblende" InAs crystals (with a structure that looks like a bunch of methanes stuck together). So bust out your memory of high school chemistry and learn how bonding, charges, and crystalline symmetry all matter to actual scientific research going on right now at UCSB and Stanford! Big thanks to MROP, the Materials Research Outreach Program, for having me as a speaker, and also big thanks to Ram Seshadri, Director of the Materials Research Laboratory, for giving me the OK to share this recording! http://www.mrl.ucsb.edu/materials-research-outreach-program If anybody's ludicrously curious, here's the paper this talk was based on: doi.org/10.1103/PhysRevMaterials.4.033402 Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix #Materials #Physics #Crystals Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

It's play button time, and today it's made from copper foil - a surprisingly stretchable material. You wouldn't think that crystalline materials like metals could deform without destroying the atomic pattern that gives them their strength and electronic properties, but with the help of a crystal defect called a dislocation, it's super easy. Dislocations are agents of plastic deformation, traveling through crystals and enabling malleability and ductility in soft metals like copper, making them great raw materials! I hope you enjoy this dive into the materials science of plastic strain, and if this is your first video here, be sure to subscribe for more! Thanks to all my OG subscribers, and welcome to the new ones! And a big thanks to Steve Mould for sending some of his awesome fans my way. https://www.youtube.com/user/steventhebrave Corrections and Clarifications: - "Plastic deformation" is a term that means a permanent change in shape, even in metals, we call it plastic. - There are also grain boundary considerations in polycrystalline materials that I don't address at all - mostly it shows up in tension, because bubble rafts aren't ACTUALLY very ductile. - More to add when I get convinced I'm wrong! Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix #Materials #Physics #Crystals The original bubble model video from 1952 narrated by Bragg himself - a real hidden gem of matsci history. https://youtu.be/UEB39-jlmdw GIFs: short: https://gfycat.com/contentinsignificantbunny long: https://gfycat.com/compassionatewavybuzzard Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 The UNKILLABLE Snake AI (Entire 30x30 game) Hestu tune from Nintendo Legend of Zelda: Breath of the Wild

If you follow as much space news as I do, you've probably heard of Starlink, the low-earth-orbit satellite-internet megaconstellation of 12,000-40,000 satellites that theoretically will be able to provide global high speed, low-latency internet. At the cost… possibly… of filling the night sky with fake stars - little moving spots of light tracing out grids overhead ALL THE TIME. Elon Musk and SpaceX have gotten significant pushback from astronomers regarding this problem, but at this point, it's unrealistic to think the launches will stop, and we need to be thinking of ways to mitigate the effects the reflections will have. In this video, I use a big scale model to explain how these satellites can be seen from Earth - how they reflect sunlight back towards Earth at night, and how this compares to the previous king of satellite flares, the first-gen Iridium constellation. I also replicate a scale model of the "visorsat" sunshade that will hopefully be effective in blocking the bright reflections from Starlink satellites that have yet to be launched. I also discuss the "twilight effect" that makes rocket launch exhaust plumes so incredible at dusk. CORRECTIONS: - the "bottom of space" arrow points to the highest livable altitude. The atmosphere still exists here, but it would imply that Everest climbers have been to space... maybe not accurate... the edge of space is often defined as the Kármán line, but humans would be dead long before getting there. USEFUL DISCUSSIONS: [reddit link soon probably] Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix #Astronomy #SpaceX #Starlink Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Till With Bell.wav from Benboncan is licensed under a Creative Commons Attribution license Other references: "Falcon 9 Nebula" - Brian Haidet https://apod.nasa.gov/apod/ap181012.html https://www.redbubble.com/i/art-print/Artificial-Nebula-by-BrianHaidet/34407841.1G4ZT Starlink inspired satellite - 3d model by Michal_King https://www.thingiverse.com/thing:4309237 Apollo 11 Saturn V launch - NASA, Public Domain Parker Solar Probe rendering - NASA/Johns Hopkins APL/Steve Gribben, Public Domain About 2 L of RP-1 - Maxhaot, Creative Commons, Attribution A wad of United States dollars - Psychonaught, Public Domain ISS, Crew 27 - NASA, Public Domain Boeing 747 - Aero Icarus, Creative Commons, Attribution Mount Everest as seen from Drukair - Bhutan Card 02 085, Creative Commons, Attribution Starlink Launch Footage - SpaceX, Fair Use Iridium first-gen replica - Cliff, Creative Commons, Attribution Iridium coverage animation - GrandDixence@Wikipedia, Public Domain Iridium NEXT Satellite - Iridium Communications, Fair Use Starlink Satellite Renderings - SpaceX, Fair Use Company Logos of: SpaceX, OneWeb, Amazon, Iridium, Fair Use Cirero Tololo Observatory - Hernán Stockebrand, Creative Commons, Attribution #FieldOfSatTrails Image - Twitter, Cliff Johnson, @lcjohnso, Fair Use "Stalking Darksat" headline, UniverseToday.com, David Dickinson, Fair Use VISORSAT headline, Twitter, SpaceNews, @SpaceNews_Inc, Fair Use

Today I've finally answered a question that's bothered me for a long time - if you've ever used a soldering iron, it FEELS like the smoke is ALWAYS blowing directly towards your face, but for years I wrote it off as confirmation bias. It's not. There's a real physical reason the smoke is funneled annoyingly towards your eyeballs, and in this video, aided by a plane laser and a smoke machine, I figure it out! CORRECTIONS: 1: Safety! Turns out mineral oil smoke CAN be toxic and produce Lipoid Pneumonia, thanks to Cheetah Spottycat below for pointing this out. I chose it initially because the internet told me it wouldn't leave residue all over my garage, but I cannot endorse it as a try-this-at-home technique! USEFUL DISCUSSIONS: https://www.reddit.com/r/electronics/comments/gsfayl/its_not_just_confirmation_bias_solder_smoke/ https://hackaday.com/2020/06/01/why-does-solder-smoke-always-find-your-face/ GIFS: https://gfycat.com/querulousunsightlybrownbear https://gfycat.com/easyindelibledegus https://gfycat.com/helpfuleachcat Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix #Science #Lasers #Soldering Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/

CORRECTIONS: [none yet] Welcome to Episode Two of my series about molecular beam epitaxy! In this video, I'm talking about the best way to shoot a beam of atoms at something… As much as that sounds like a crazy scifi weapon, it's actually a great technique for delivering material to a growing crystalline thin film. All materials, even solids, have a vapor pressure and are slowly evaporating. When you put a chunk of material in a vacuum chamber and get it hot, it can evaporate so fast the vapor can be directed towards a target! Let me know in the comments if you have any questions about the MBE I could address in future videos! Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix #Crystals #Materials #Engineering The MBE Lab is part of the Materials Department at UCSB. Filmed with permission. Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Till With Bell.wav from Benboncan is licensed under a Creative Commons Attribution license Phase diagram of water.svg from Wikimedia Commons by Cmglee is licensed under a Creative Commons Attribution license Hermes Conrad - Character from Futurama, Matt Groening

When I'm not making YouTube videos, I'm growing crystals in a Molecular Beam Epitaxy vacuum chamber held about 12 orders of magnitude below atmospheric pressure. This is the first in what I'm hoping will be a series of videos featuring the MBE chamber, and this time I'm talking about leaks: how to find the tiniest leaks in the most sensitive systems, and how an MBE can be considered basically a perfect pressure vessel with no air leaking in or out at any time. Let me know in the comments if you have any questions about the MBE I could address in future videos! Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix #Vacuum #Materials #Engineering The MBE Lab is part of the Materials Department at UCSB. Filmed with permission. Extra graphics in this video: ConFlat flange diagrams from Kurt J. Lesker and Vacs SEV Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

If you're anything like me, you'll love zoning out watching a computer play a very basic computer game for hours on end. Here's a half-hour game - the median from my best algorithm - played back at 30 fps. CODE! https://github.com/BrianHaidet/AlphaPhoenix/tree/master/Snake_AI_(2020a)_DHCR_with_strategy Here's my original Snake AI video that explains how it all works: https://youtu.be/TOpBcfbAgPg Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix #Snake #AI #Math Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Operatic 3 by Vibe Mountain is licensed under a Creative Commons license Mountain by Text Me Records / Bobby Renz is licensed under a Creative Commons license Deserts by Text Me Records / Bobby Renz is licensed under a Creative Commons license Stay with You by Silent Partner Acid Jazz by Kevin MacLeod is licensed under a Creative Commons license Acid Jazz by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: https://freemusicarchive.org/music/Kevin_MacLeod/Jazz_Sampler/AcidJazz_1430 Artist: http://incompetech.com/ Surfing Llama by Bird Creek is licensed under a Creative Commons license BoogieBounce by Drew Banga is licensed under a Creative Commons license Pink Lemonade by Silent Partner is licensed under a Creative Commons license Way Out West by Chris Haugen is licensed under a Creative Commons license Space Coast by Topher Mohr and Alex Elena is licensed under a Creative Commons license Not the Only One by Rondo Brothers is licensed under a Creative Commons license Move Ya by Max Surla/Media Right Productions is licensed under a Creative Commons license

I watched the CodeBullet Snake AI video on the morning after Thanksgiving and spent WAAAAYY too much time working on an AI of my own. I present to you: Snake, as played algorithmically with Dynamic Hamiltonian Cycle Repair. The snake can never die - like really, actually, literally, can't be killed - it's just a matter of how fast it wins the game… If you, like me, enjoy watching snakes run around eating apples for hours on end, enjoy this follow-up where I took the median-length game from my best performing algorithm and posted the whole darn thing on YouTube: https://youtu.be/YqL7bl3I5IE Check out the other social media for updates and ramblings: https://www.facebook.com/AlphaPhoenixChannel/ https://twitter.com/Alpha__Phoenix #Snake #AI #Math CODE! https://github.com/BrianHaidet/AlphaPhoenix/tree/master/Snake_AI_(2020a)_DHCR_with_strategy Snake References: @CodeBullet CodeBullet's (Most recent) snake video: https://youtu.be/tjQIO1rqTBE @johnflux1 John Tapsell's Nokia snake project: https://johnflux.com/2015/05/02/nokia-6110-part-3-algorithms/ Mathworks File Exchange Reference: A* code originally written by Einar Ueland https://www.mathworks.com/matlabcentral/fileexchange/56877-astar-algorithm Actual MATH Papers: http://mathworld.wolfram.com/GridGraph.html https://epubs.siam.org/doi/10.1137/0211056 http://www.cs.technion.ac.il/~itai/publications/Algorithms/Hamilton-paths.pdf https://drops.dagstuhl.de/opus/volltexte/2018/9951/pdf/LIPIcs-ISAAC-2018-3.pdf https://link.springer.com/chapter/10.1007%2F978-3-642-31770-5_8 https://arxiv.org/pdf/1008.0541v1.pdf https://arxiv.org/pdf/1707.05994.pdf https://onlinelibrary-wiley-com.proxy.library.ucsb.edu:9443/doi/pdf/10.1002/%28SICI%291097-0118%28199601%2921%3A1%3C43%3A%3AAID-JGT6%3E3.0.CO%3B2-M https://www.sciencedirect.com/science/article/abs/pii/002001909090053Z https://en.wikipedia.org/wiki/Hamiltonian_path_problem#Algorithms http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.23.6765&rep=rep1&type=pdf http://weber.itn.liu.se/~valpo40/pages/hamtile.pdf https://www.sciencedirect.com/science/article/pii/S0304397515007719 https://www.sciencedirect.com/science/article/pii/0012365X9500330Y Other clips in this video: https://xkcd.com/356/ Morbo "Dooom" (Futurama) "That's Illegal" meme (Red vs. Blue) Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

https://www.facebook.com/AlphaPhoenixChannel https://twitter.com/Alpha__Phoenix This video has been 4 years in the making… In undergrad I started work on a random number generator that used a geiger tube to generate random pulses and a nixie as the primary display (here's the ancient "it almost works" video: https://youtu.be/dTjmuii5boA). Unfortunately, I couldn't prove it was actually working back then because I couldn't make the geiger tick faster with the test alpha source I had (alpha particles get blocked super-easily). I rebuilt the thing this past summer, and FINALLY got to making the video! I hope you enjoy it! If you're interested, here's a nice relatively-plain-English summary of the many-worlds-hypothesis (Rick and Morty) and it mentions the competing Copenhagen interpretation (Schrodinger's cat). https://www.pbs.org/wgbh/nova/manyworlds/original.html #Random #Physics #Maker Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Images in this video: Rick and Morty from Rick and Morty on Adult Swim 1925 Model T from ModelTMitch The Rocinante from The Expanse on Syfy/Amazon Prime

For this project I got the chance to show off one of my favorite tools from work, the Focused Ion Beam! In this video, I use the FIB to 3d print and etch away material at the nanoscale, making a youtube play button that's only 1 hundredth of a millimeter across. It's made of an amorphous mix of platinum and carbon, and it's so small you need an electron microscope to see it properly. Enjoy! Also: Thanks to all my subscribers! Also also: Leave comments for new fabrication techniques for the 2^13 button! Also also also: I started a Facebook page for AlphaPhoenix! Follow the page and share with your friends! https://www.facebook.com/AlphaPhoenixChannel/ That was a lot of exclamation marks… - here's the extra stuff: #WorldRecord #Nanoscale #Microscope Filmed in the Materials department at UCSB with permission. Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 BoogieBounce by Drew Banga is licensed under a Creative Commons license

Extra note: I'm starting a Facebook page for AlphaPhoenix with video updates and info about projects I'm working on! https://www.facebook.com/AlphaPhoenixChannel In this video I take a trip to Thistle Dhu, the famous putting course at Pinehurst and write a matlab program to simulate a million putts at once, all in an effort to map "Phase Spaces" of golf. There's a common scientific mindset normally referred to as a phase space or parameter space, where you express everything that could happen in an experiment in terms of the variables you can control. In the case of putting a golf ball, the ball can go in the hole, or it can miss completely - if it misses, we also care how far from the hole it stopped. You only actually have control of two variables while putting a golf ball, the initial speed and initial direction. After you hit the ball, physics takes over! By popular request, here's some code! https://github.com/BrianHaidet/AlphaPhoenix/tree/master/Golf_green_Verlet_simulator_phase-space Music: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Graphic based on plot from McSkimming et al., (2014) 10.1016/j.jcrysgro.2013.10.013

For anybody who wants to try the "boil water with water" experiment for themselves, you're in the right place! This video gives a quick overview of the setup and explains how you set up the experiment to boil water with no applied heat or vacuum pump. The original video: https://youtu.be/hHNoHhbfFDQ Music: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

This was a fun quick experiment that makes a great physics demo about pressures and state-changes of matter. Everybody's seen water boil on a stove, but at the University of Toledo's Saturday Physics days when I was little, I once saw water boil in a vacuum chamber, and for some reason that stuck with me. A few weeks ago I got the idea to try to boil water at low pressure, not with a real mechanical vacuum pump, but by using a massive column of water as a sort of by-default vacuum generator. I used no heat and no motorized pump, but I boiled water at room temperature using only $25 of hardware store parts and an old heavy-duty waterbottle. Enjoy! If you want to try this experiment yourself, I've got a bit more information about physically building and setting up the apparatus here: https://youtu.be/yYBQHFCqw_A Music: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626

Footage of the just-launched Starlink constellation from Santa Barbara. You may want to play it in 4k resolution even on a 1080 or smaller monitor to decrease the size of the compression artifacts. This footage was pretty noisy originally and YouTube's compression seems to have done a number on it again. The gfycat link might even be better... https://gfycat.com/LinedDishonestLabradorretriever I saw the awesome video from Marco Langbroek (https://sattrackcam.blogspot.com/2019/05/wowowow-spectacular-view-of-spacex.html) yesterday and wanted to try my hand at catching a wide-field view of the still-unfurling Starlink test constellation. Turns out I WAS able to catch the main train, and even got a bunch of the "stragglers" I believe are now under power and actively separating from the pack. I used a Sony a6000 with a Samyang 12mm f/2.0 all the way open, and I was talking 1/2" exposures with an iso of 3200. I had to push the iso pretty hard to get short enough exposures not to turn the entire satellite train into a single blur - they were moving at about 1 degree/sec and I'm used to taking pictures of stars that only move a degree every four minutes… So even with some really heavy noise reduction in lightroom and some deflickering in matlab, please excuse the noisy image - I don't have a low-light-designed "video" camera. These images were taken at 1 fps (fastest my intervelometer goes) and played back at 30x speed. I was on Campus Point at UCSB looking southeast towards Santa Cruz Island. I was expecting some noise in the prediction (https://www.n2yo.com/?s=74001) based on the nature of these satellites, so set up my gear in advance, barely catching the train as it arrived about 10 minutes early. Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 New Land by ALBIS is licensed under a Creative Commons license

Ever wish you could extract one day of nature from the world and play that frame on a loop? I do! and I've been trying to figure out the best way to take full-day loopable timelapses for a few years now. As good weather aligned with a pre-planned hiking trip, I had the awesome opportunity to film a timelapse from Santa Cruz Islands, in Channel Islands National Park off the coast of southern California. Other than the ranger station on the island, I don't think there was a permanent human structure within 20 miles of my camera, and Ventura was behind me to the north, so the southern sky was DARK, and the night sky was awesome! The camera ran for a total of 25 hours and 52 minutes, and I spliced the footage back on itself to create a looping day-long timelapse. I'd been meaning to make a video about shooting 24-hour timelapses because I've done a bunch now and it's a really satisfying technique, so here it is! The full tutorial! I'm going to go through the entire process, front-to-back, that I used to create this timelapse, starting with planning and location selection before I left the mainland, and ending with post-processing and video looping in daVinci Resolve. In between I'll hit everything about physically recording the timelapse, including my equipment setup, camera settings, weatherproofing, and mounting. Once you've got more than a thousand raw files, It also takes a solid day to edit (largely AFK lightroom rendering time but still...) and I go into my complete day-to-night-and-back timelapse workflow. Hope you enjoy! I really love the technique so if you film such a timelapse, let me know cause I'll want to watch! Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 New Land by ALBIS is licensed under a Creative Commons license

As good weather aligned with a pre-planned hiking trip, I had the awesome opportunity to film a timelapse from Santa Cruz Islands, in Channel Islands National Park off the coast of southern California. Other than the ranger station on the island, I don't think there was a permanent human structure within 20 miles of my camera, and Ventura was behind me to the north, so the southern sky was DARK, and the night sky was awesome! The camera ran for a total of 25 hours and 52 minutes, and I spliced the footage back on itself to create this looping day-long timelapse. I didn't realize at the time, however, that the closest land in front of my camera was Los Angeles, 70 miles over the horizon to the southeast (on the left of the frame), and the light pollution from LA is nothing to sneeze at - it's actually pretty depressing. The next morning looking at the camera's recordings I realized that I captured that bubble of light pretty clearly and it was a fascinating view. First, I liked capturing the bustle of ships going in and out of the port of LA at night, but second, to see such a bright light from an unpolluted vantage point was something I hadn't dealt with before - the milky way was perfectly clear everywhere except the southeastern horizon... When you're in a big city trying to see the night sky, imagine that bubble of light above you, washing out all the beautiful detail of the stars - I don't think you could pay me enough to live in LA, and all but give up the ability to look up at night… Since I expect people will ask, no, the milky way doesn't look *quite* that defined to the naked eye. I haven't blown out the saturation too much here, but in person the milky way looks a bit grayer because only the rods in your eye can pick up light that faint. This camera was also taking 30 second exposures, so it's a lot better at resolving faint contrast in the dark than your eye. What it's not good at however, is adjusting to both bright and dark elements in the same image. The moon rises early in the morning and looks WAY too bright until sunrise, when the camera drops its exposure to account for the brightness of the sun. COMPLETE tutorial for filming and editing this timelapse: https://youtu.be/1YorUDE0f9g GIF version ("perfectloop"): [coming soon to a reddit near you] Still images on Flickr: https://www.flickr.com/photos/144439286@N08/46711295665/in/datetaken-public/ Prints on RedBubble https://www.redbubble.com/people/brianhaidet/works/38400783-milky-way-over-monta-on-ridge Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 Not Without the Rest by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://www.twinmusicom.org/

For those who are more curious, this video is the complete (20 minute long) simulation of the 3D crystalization demo. (like I expect anybody to watch it front to back...) The simulation is based off of the "Energy Verlet" molecular dynamics method. I wrote it in Matlab to run on a 1060 6GB GPU. By the time all the particles are in the simulation, the program makes multiple trips to the graphics card for every timestep or else runs out of graphics memory. massively parallel computation requires a LOT of memory, apparently... There is no sub-binning of the simulation. Every pair of particles has its forces calculated in every timestep. Although far-apart particles don't apply a lot of force on each other, I couldn't make a more efficient system to only solve for adjacent particles that was better than calculating all the inter-pair distances in one line of code... For 16000 particles, that's something like 250 million square roots that need to be calculated every timestep, let alone the actual force vectors after you figure out how far apart everything is... The particles obey a sum of the Lennard Jones potential (so that particles don't go through each other) and the Coulomb potential (so that red and blue attract and like colors repel). Even with these two perfectly "spherical" potentials, an ordered 3D structure forms, with both a crystal lattice and habit. Since a couple comments were asking for it, I cleaned up my code a bit and have it posted here. If you have any questions, let me know in the comments so that anybody can read the answers! https://github.com/BrianHaidet/AlphaPhoenix/tree/master/CsCl_Molecular_Dynamics_3D This Video Series: Crystals (The main video): https://youtu.be/06TscuHNvGQ The entire CsCl crystal simulation, growing a crystalline "nanoparticle" from 2 to 16384 particles: https://youtu.be/6DlRsPo-dxY Extra footage of the water-bath 2D demo: https://youtu.be/aO-u6fJDwIs Epilogue - Why cubic crystals don't always make cubic shapes: coming soon GIFs in this series: 2D crystal water bath: 3D Simulated nanoparticle: Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Operatic 3 by Vibe Mountain is licensed under a Creative Commons license Brighton Lights by Noir Et Blanc Vie is licensed under a Creative Commons license Move Ya by Max Surla/Media Right Productions is licensed under a Creative Commons license Birth Noir by Noir Et Blanc Vie is licensed under a Creative Commons license Space Walk by Silent Partner is licensed under a Creative Commons license Flickering by VYEN New Land by ALBIS is licensed under a Creative Commons license Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/

For those who are more curious, this video is some raw timelapse footage of the water-bath-magnet demo. This demo shows formation of 2D crystals, sometimes more effectively than others. The first time I tried to make the hexagonal crystal, for example, I had way too many disks in the pool. Because they were running into the walls, they didn't have enough freedom get to their ideal arrangement, and the perfect "crystal" never formed. It's interesting where this model is similar to and very different from "real life" crystallization. I'd love to try this out in massive scale, like a 10'x10' shallow pool of water and a couple thousand magnets... This Video Series: Crystals (The main video): https://youtu.be/06TscuHNvGQ The entire CsCl crystal simulation, growing a crystalline "nanoparticle" from 2 to 16384 particles: https://youtu.be/6DlRsPo-dxY Extra footage of the water-bath 2D demo: https://youtu.be/aO-u6fJDwIs Epilogue - Why cubic crystals don't always make cubic shapes: coming soon GIFs in this series: 2D crystal water bath: 3D Simulated nanoparticle: Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Move Ya by Max Surla/Media Right Productions is licensed under a Creative Commons license Operatic 3 by Vibe Mountain is licensed under a Creative Commons license

Crystals are materials that have all their atoms assembled in a precise, repeating pattern, and crystalline materials are everywhere. In this video, I've got real crystals, take pictures of actual atoms, and build two demonstrations (one physical and one virtual) that show how crystals actually form. Extra thanks to the Earth Science microscopy facility, CNSI, and Dr. Mukherjee at UCSB for props, lab access and a better TEM image than my original! This Video Series: Crystals (The main video): https://youtu.be/06TscuHNvGQ The entire CsCl crystal simulation, growing a crystalline "nanoparticle" from 2 to 16384 particles: https://youtu.be/6DlRsPo-dxY Extra footage of the water-bath 2D demo: https://youtu.be/aO-u6fJDwIs Epilogue - Why cubic crystals don't always make cubic shapes: coming soon CODE! https://github.com/BrianHaidet/AlphaPhoenix/tree/master/CsCl_Molecular_Dynamics_3D Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/ Move Ya by Max Surla/Media Right Productions is licensed under a Creative Commons license Operatic 3 by Vibe Mountain is licensed under a Creative Commons license Other Credits: Silica diagram - public domain Video effects - Shutterstock Video Editor Toolkit

This video featured as an Astronomy Picture of the Day! https://apod.nasa.gov/apod/ap181208.html Official Explanation: You can pack a lot of sky watching into 30 seconds on this tiny planet. Of course, the full spherical image timelapse video was recorded on planet Earth, from Grande Pines Observatory outside Pinehurst, North Carolina. It was shot in early September with a single camera and circular fisheye lens, digitally combining one 24-hour period with camera and lens pointed up with one taken with camera and lens pointed down. The resulting image data is processed and projected onto a flat frame centered on the nadir, the point directly below the camera. Watch as clouds pass, shadows creep, and the sky cycles from day to night when stars swirl around the horizon. Keep watching, though. In a second sequence the projected center is the south celestial pole, planet Earth's axis of rotation below the tiny planet horizon. Holding the stars fixed, the horizon itself rotates as the tiny planet swings around the frame, hiding half the sky through day and night. Extra Info (original description): This timelapse is heavily distorted because it's packing a full spherical image (think globe of stars) and reprojecting it onto a flat surface (your screen). For the first minute or so, the standard "tiny planet" timelapse, the center of the image is straight down - you can see the tripod and the shadow of the camera; the outer edge, literally the entire ring at the edge of the circular image, is straight up, that's why the rim looks so distorted. In fact I made the "planet" a bit smaller as well by throwing in a sqrt(theta) so the edge is even more stretched... Once the frame switches around and the stars stop moving, I've changed the center of distortion from straight down to straight towards the south pole; the ring at the edge of the frame is now the north pole, and Polaris, the north star, is smeared out over the whole outside of the image. It's kinda weird. However, in this view, the center of distortion is the same as the center of rotation of the stars, so you can spin the frame and none of the stars appear to move! I like to think of this as the whole sky always being "there", but the earth blocks about half of it ALL THE TIME! I shot this timelapse over the course of about a week. (the camera was pretty tired and I went through a bunch of 64BG SD cards...) I ended up finally capturing one good 24-hour span with the camera pointed up, and one good 24-hour span with the camera pointed down. I was using a circular fisheye lens with a 185 degree field of view to capture the entire sky in a single photograph. I also flipped the camera over to take a picture of the ground and capture a full spherical image (albeit separated by a day). I did a whole lot of math and editing in Lightroom (twice for each of the "up" images), Matlab for color temporal smoothing, Davinci Resolve for stabilization and looping, back to Matlab for spherical "unfolding", back to Resolve for compositing the top and bottom images, back to Matlab again for redistorting into the "tiny planet", and finally back into resolve again for a final render. I also passed a few frames through Imagej in order to measure some angles I needed for the polar alignment and "star stabilization". After all that I think it turned out pretty cool! A bit more detail on the coding: https://www.reddit.com/r/space/comments/a2dm4v/tiny_planet_in_the_cosmos/eaz5y51/ Camera: Sony A6000 - Aperture priority, auto-ISO, AWB Lensbaby circular fisheye (E-mount) - adjusted aperture at sunrise and sunset to control light) External intervalometer set to 1:20/frame (enough time to process a max 30 second exposure and associated dark frame) Case-relay power system (plugged into the wall, you can see the orange cable on the ground...) Other videos in this series: Star-stabilizing the sky: https://youtu.be/JmCNNHQ86NE Tiny planet (APOD Featured!): https://youtu.be/14TrSQQsrNM The "up" view: https://youtu.be/gfSRGHrsYKU Virtual reality timelapse: https://youtu.be/VGAkMqM5fnI GIFs in this series: Tiny Planet: https://gfycat.com/disguisedclevereasteuropeanshepherd Tiny Planet (south pole): https://gfycat.com/courageousbaddaddylonglegs "Tiny Tunnel": https://gfycat.com/bouncyhighlevelaxolotl "Tiny Tunnel" (south pole): https://gfycat.com/jauntycarefulghostshrimp Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 Space Walk by Silent Partner is licensed under a Creative Commons license

Here's the "VR-cut" of my spherical 24-hour timelapse. I processed all of my image data from one upward-facing frame and one downward-facing frame to produce each frame of this complete spherical video. Feel free to pan around this video outside Grande Pines Observatory, or throw on a VR headset and travel there yourself! Other videos in this series: Star-stabilizing the sky: https://youtu.be/JmCNNHQ86NE Tiny planet (APOD Featured!): https://youtu.be/14TrSQQsrNM The "up" view: https://youtu.be/gfSRGHrsYKU Virtual reality timelapse: https://youtu.be/VGAkMqM5fnI GIFs in this series: Tiny Planet: https://gfycat.com/disguisedclevereasteuropeanshepherd Tiny Planet (south pole): https://gfycat.com/courageousbaddaddylonglegs "Tiny Tunnel":https://gfycat.com/bouncyhighlevelaxolotl "Tiny Tunnel" (south pole): https://gfycat.com/jauntycarefulghostshrimp Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Space Walk by Silent Partner is licensed under a Creative Commons license

I like to think of this as the whole sky always being "there", but if we look straight "up", we're always pointed towards a different part of same sky. This video is a timelapse taken over 24 hours with a fisheye lens to capture literally the entire sky in a single frame. I think it's pretty incredible how the sky acts like an ever-changing window on our universe. I shot this timelapse over the course of about a week. (the camera was pretty tired and I went through a bunch of 64BG SD cards...) I ended up finally capturing one good 24-hour span with the camera pointed up, and one good 24-hour span with the camera pointed down. I was using a circular fisheye lens with a 185 degree field of view to capture the entire sky in a single photograph. I also flipped the camera over to take a picture of the ground and capture a full spherical image (albeit separated by a day). I did a whole lot of math and editing in Lightroom (twice for each of the "up" images), Matlab for color temporal smoothing, Davinci Resolve for stabilization and looping, back to Matlab for spherical "unfolding", back to Resolve for compositing the top and bottom images, back to Matlab again for redistorting into the "tiny planet", and finally back into resolve again for a final render. I also passed a few frames through Imagej in order to measure some angles I needed for the polar alignment and "star stabilization". After all that I think it turned out pretty cool! Camera: Sony A6000 - Aperture priority, auto-ISO, AWB Lensbaby circular fisheye (E-mount) - adjusted aperture at sunrise and sunset to control light) External intervalometer set to 1:20/frame (enough time to process a max 30 second exposure and associated dark frame) Case-relay power system (plugged into the wall, you can see the orange cable on the ground...) Other videos in this series: Star-stabilizing the sky: https://youtu.be/JmCNNHQ86NE Tiny planet (APOD Featured!): https://youtu.be/14TrSQQsrNM The "up" view: https://youtu.be/gfSRGHrsYKU Virtual reality timelapse: https://youtu.be/VGAkMqM5fnI GIFs in this series: Tiny Planet: https://gfycat.com/disguisedclevereasteuropeanshepherd Tiny Planet (south pole): https://gfycat.com/courageousbaddaddylonglegs "Tiny Tunnel": https://gfycat.com/bouncyhighlevelaxolotl "Tiny Tunnel" (south pole): https://gfycat.com/jauntycarefulghostshrimp Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Not Without the Rest by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://www.twinmusicom.org/

I like to think of this as the whole sky always being "there", but the Earth blocks about half of it ALL THE TIME! Alternately, if we look straight "up", we're always pointed towards a different part of same sky. I made these reprocessed spherical timelapses to hopefully communicate these perspectives. I think it's pretty incredible how the sky acts like an ever-changing window on our universe. I shot this timelapse over the course of about a week. (the camera was pretty tired and I went through a bunch of 64BG SD cards...) I ended up finally capturing one good 24-hour span with the camera pointed up, and one good 24-hour span with the camera pointed down. I was using a circular fisheye lens with a 185 degree field of view to capture the entire sky in a single photograph. I also flipped the camera over to take a picture of the ground and capture a full spherical image (albeit separated by a day). I did a whole lot of math and editing in Lightroom (twice for each of the "up" images), Matlab for color temporal smoothing, Davinci Resolve for stabilization and looping, back to Matlab for spherical "unfolding", back to Resolve for compositing the top and bottom images, back to Matlab again for redistorting into the "tiny planet", and finally back into resolve again for a final render. I also passed a few frames through Imagej in order to measure some angles I needed for the polar alignment and "star stabilization". After all that I think it turned out pretty cool! Camera: Sony A6000 - Aperture priority, auto-ISO, AWB Lensbaby circular fisheye (E-mount) - adjusted aperture at sunrise and sunset to control light) External intervalometer set to 1:20/frame (enough time to process a max 30 second exposure and associated dark frame) Case-relay power system (plugged into the wall, you can see the orange cable on the ground...) Other videos in this series: Star-stabilizing the sky: https://youtu.be/JmCNNHQ86NE Tiny planet (APOD Featured!): https://youtu.be/14TrSQQsrNM The "up" view: https://youtu.be/gfSRGHrsYKU Virtual reality timelapse: https://youtu.be/VGAkMqM5fnI GIFs in this series: Tiny Planet: https://gfycat.com/disguisedclevereasteuropeanshepherd Tiny Planet (south pole): https://gfycat.com/courageousbaddaddylonglegs "Tiny Tunnel": https://gfycat.com/bouncyhighlevelaxolotl "Tiny Tunnel" (south pole): https://gfycat.com/jauntycarefulghostshrimp Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Dreaming in 432Hz by Unicorn Heads is licensed under a Creative Commons license Graphics Credits: Northern hemisphere star chart overlay - Couldn't locate original author, shows up all over tineye... Textures I used to make the intro 3D render: Mercator projection of the world between 82°S and 82°N - by Strebe, Creative Commons Solar rectilinear projection - https://www.solarsystemscope.com/textures/ Night sky rectilinear map - NASA Tycho Skymap http://svs.gsfc.nasa.gov/3572

Thanks to all my subscribers! Continuing the every-exponent play button build, for 2048 subscribers (albeit publishing more than a bit late) I make a play button out of wood, carved on a CNC router. I'll be making a play button out of a new material every time my subscriber count doubles. Leave a comment to suggest materials for 4096! Music Credits: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Stay with You by Silent Partner is licensed under a Creative Commons license Mountain by Text Me Records / Bobby Renz is licensed under a Creative Commons license

I wanted an easier way to carry my surfboard two miles to the beach, so I built a trailer that tows behind my bike. This video shows the construction of the “mk.2” trailer with a few improvements on my original, like a better hitch, and super-easy board mounting/removal! The cart is fabricated from ½” PVC pipe and 1/8” steel bar stock and is a good weekend’s build. I built my trailer at the Santa Barbara Hackerspace – If you live nearby, come check out the ‘space on any Saturday! Parts list: 3x10’ ½” Schedule 40 PVC 3’ bar 1/8”x3/4” steel bar 2x6’ ½” foam pipe insulation 10 ish 1-1/4” drywall screws 6’ ish paracord 3 hose clamps 1 ¼” bolt and nut Tools list: Drill or drill press Hacksaw Heat gun Vise and hammer (optional) grinder (optional) welder Music and stuff: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 Stay With You by Silent Partner is licensed under a Creative Commons license Deserts by Text Me Records / Bobby Renz is licensed under a Creative Commons license Not the Only One by Rondo Brothers is licensed under a Creative Commons license Mountain by Text Me Records / Bobby Renz is licensed under a Creative Commons license Pink Lemonade by Silent Partner is licensed under a Creative Commons license Till With Bell.wav from Benboncan is licensed under a Creative Commons Attribution license Stills: Spaceballs (1987, Mel Brooks) Home Improvement (ABC)

In 1849, the first terrestrial measurement of the seed of light was made by Hippolyte Fizeau using a bright focused lamp, a spinning slotted wheel, and a reflector a few kilometers away. This famous experiment is one that I've spent the better part of the last year thinking about and very slowly replicating! Using a 5mW green-dot laser sight, a "slotted disk" laser-cut from black posterboard, a speed-controlled dremel, a digital camera, and a full spool of retroreflective tape, I succeeded in measuring and calculating the speed of light! In this video I introduce and explain the theory behind the experiment, and actually perform the experiment to calculate a result. (You'll have to watch to see how close I got!) An English translation of Fizeau's original (very short) paper: https://skullsinthestars.com/2008/03/31/fizeaus-experiment-the-original-paper/ Future videos in this series: -Repeat experiment with 10-mile round trip for the light -Mechanics of the Fizeau Apparatus (incl. wheel speed control and measurement) -Optics of the Fizeau Apparatus (incl. retroreflectors) Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/) http://ccmixter.org/files/grapes/16626 [Original Score] by Wyatt W., used with permission

I recently got an Oculus Rift and realized that if I was taking 185° fisheye timelapses, I could reprocess them into spherical videos for VR viewing! (granted most of the ground is missing). Considering it's my first attempt at such a technique, I'm really happy with how it all turned out! The first time I put a test cut into the rift the other day I was pretty amazed. Hope you enjoy! Even starting with a 4k*2k image, the resolution is limited because the Rift's HMD is limited, but it still feels like you're standing there and time went nuts, which I think is pretty cool. The lens flare does map out pretty weirdly at night, and the spherical stretching heavily exaggerates my lens' chromatic aberration, resulting in some dark blue fringes near sharp edges on trees and in the observatory, but those are problems to solve with more coding at a later date. This video is the "sphericalized" version of this timelapse: https://youtu.be/4c1VRMUBh_4 EQUIPMENT Camera: Sony a6000 Lens: Lensbaby Circular Fisheye (185° FOV, set to f/5.8) Camera Power Supply: Case Relay (with AC-5V adapter) Anti-dew lens heater: DIY - resistive heater (2.7W) Camera cover: DIY - plastic bags and blue tape SETTINGS External Intervalometer: 1:20 per exposure Mode: Aperture Priority Shutter Speeds: (1/4000 to 30) ISO: Auto (100-800) Metering: Center* Exposure Comp: ±0.0 White Balance: AWB Long exposure noise removal (In camera dark frame): ON *Center metering caused glitches when moon was directly overhead → painful Matlab repair. PROCESSING In-Camera: Captured as RAW Lightroom 5: Processed separately for both day and night optimization MATLAB: custom deflickering routines for nighttime shots DaVinci Resolve 14: Blending, final grading, and looping Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 Vespers by Topher Mohr and Alex Elena is licensed under a Creative Commons license

24-hr Timelapse: Full Moon at the Winter Solstice Another looping 24-hr timelapse, and my first timelapse to ever include the WHOLE sky in the frame! I took this lapse in North Carolina (hence the pines) on the night of the full moon just after the winter solstice (the new moon was cloudy). You can see that the sun is REALLY low in the sky in the winter; it barely clears the trees. I also made this timelapse into a spherical "360" video for VR viewing: https://youtu.be/RswhLz9TuPE EQUIPMENT Camera: Sony a6000 Lens: Lensbaby Circular Fisheye (185° FOV, set to f/5.8) Camera Power Supply: Case Relay (with AC-5V adapter) Anti-dew lens heater: DIY - resistive heater (2.7W) Camera cover: DIY - plastic bags and blue tape SETTINGS External Intervalometer: 1:20 per exposure Mode: Aperture Priority Shutter Speeds: (1/4000 to 30) ISO: Auto (100-800) Metering: Center* Exposure Comp: ±0.0 White Balance: AWB Long exposure noise removal (In camera dark frame): ON *Center metering caused glitches when moon was directly overhead → painful Matlab repair. PROCESSING In-Camera: Captured as RAW Lightroom 5: Processed separately for both day and night optimization MATLAB: custom deflickering routines for nighttime shots DaVinci Resolve 14: Blending, final grading, and looping Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 Vespers by Topher Mohr and Alex Elena is licensed under a Creative Commons license

I had been wanting to take a 24-hr timelapse of the tides for over a year now, ever since I began playing with the 24 hour technique last last summer. I had recently obtained the necessary battery gear and fisheye lens, and on December 2-3, 2017, I had the (almost) perfect conditions to take this timelapse. There were more clouds at night than I would have liked, but on the other hand, there was a supermoon falling across a weekend (early Sunday morning, technically). Not only were they some of the largest tides of the year, but I didn't have to be at work, so I could stand outside on Campus Point (Goleta, CA) for over a day babysitting the camera (occasionally wiping seawater off the lens)! Of course I couldn't pitch a tent on the beach because it was on campus, so I will say that it wasn't fun to be out there, but I had periodic fast food deliveries from my roommate, and a lot of layers on at night. I biked out to the location Saturday afternoon, and the camera ran uninterrupted until sunset on Sunday. One of the most perplexing things to me is the lunitidal offset in Santa Barbara. The highest tide follows the lunar meridian by about 8 hours. It seems like the tides are almost 90 degrees out of phase. I can only assume that's a local effect due to being at the mouth of the Santa Barbara Channel headed into the Pacific. If anybody that's read this far into the description knows how to remove sand from the focus ring of a Lensbaby Circular Fisheye, please message me here or on reddit! Anyways, enjoy the timelapse! I've also posted my equipment/settings below if any other photographers are curious! I know I've learned a lot by reading EXIFs... EQUIPMENT Camera: Sony a6000 Lens: Lensbaby Circular Fisheye (185° FOV, set to f/5.8) Camera Power Supply: Case Relay with 20,100mAh Anker Power Core Anti-dew lens heater: DIY - resistive heater (2.7W), powered by 10,000 mAh USB battery Camera cover: DIY - plastic bags and blue tape Tripod: PhotoTools Aluminum Travel Tri-Monopod, Pergear TH3 SETTINGS External Intervalometer: 1:20 per exposure Mode: Aperture Priority Shutter Speeds: (1/4000 to 30) ISO: Auto (100-800) Metering: Center Exposure Comp: ±0.0 White Balance: AWB Long exposure noise removal (In camera dark frame): ON PROCESSING In-Camera: Captured as RAW Lightroom 5: Processed separately for both day and night optimization DaVinci Resolve 14: Blending, final grading, and looping STATS 1219 - frames captured 27 - total hours of footage 28.1 - gigabytes of .ARW raws 9 - hours of postprocessing computation 1 - wave hit the camera while filming Music in this video: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) http://ccmixter.org/files/grapes/16626 So Far Away by Riot is licensed under a Creative Commons license

This is a lasercut christmas tree model. The entire project is made from cheap 0.200" plywood you can buy at a hardware store (no extra dowels or anything) so it's really easy to cut out and assemble! Hope you enjoy! Part files: - .dxf, .pdf, and .ai - https://www.thingiverse.com/thing:2682743 Materials: - 0.200" plywood (I used cheap underlayment) - Glue (wood glue or superglue) - Spray polyurethane - Scratch remover/stain or permanent marker Tools: - laser cutter (preferably at least 40W) - files/sandpaper Music in this video: I dunno by grapes, is licensed under a Creative Commons: Attribution License (https://creativecommons.org/licenses/...) Source: http://ccmixter.org/files/grapes/16626 Arriba Mami by Jingle Punks is licensed under a Creative Commons license Acid Jazz by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) Source: https://freemusicarchive.org/music/Ke... Artist: http://incompetech.com/ O Christmas Tree (Instrumental) by Jingle Punks is licensed under a Creative Commons license Sunday Plans by Silent Partner is licensed under a Creative Commons license Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) Source: http://incompetech.com/music/royalty-... Artist: http://incompetech.com/

3122 Florence is a Near Earth Object (NEO) being tracked by the Minor Planets Center. It's a 2.5 mile wide chunk of rock , not expected to hit Earth anytime soon, but it's certainly nearby! My dad participates in the MPC's citizen science program, and took a video of 3122 Florence as it flew past Earth a few weeks ago. It passed within about 4.9 million miles, or about 20x the Earth-moon distance. It was moving so fast across the sky you could literally watch it move over the course of a few minutes. The timelapse shown at the end of this video takes place over less than 15 minutes. It's pretty amazing to me that with a shed full of optics, we can perceive pretty tiny chunks of cold rock flying through space millions of miles away! More about radio astronomy of asteroids: http://www.planetary.org/blogs/emily-lakdawalla/2011/3248.html Music and stuff used: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 3122 Florence radio imaging: Arecibo Observatory

A look inside Grande Pines Observatory! This observatory has featured in multiple timelapses, appearing in my channel trailer, the Barn Door tracker video, and the Polaris Timelapse video, but I've never actually done a video about the observatory and all of the awesome equipment inside, so here it is! Grande Pines Observatory is operated by my dad (the astronomer). He is also the presenter in this video. I got to have fun shooting somebody else's project this time! Hope you enjoy! The gallery of images at the end of the video were taken in this observatory, some with the old 10" f/4.0 Newtonian telescope that the telescope featured here replaced. Music and stuff used: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Comfortable Mystery 2 - Film Noire by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100537 Artist: http://incompetech.com/ Ether by Silent Partner Creative Commons Simulation of a bahtinov mask diffraction pattern when focusing Niels Noordhoek Creative Commons Attribution

The big reveal of my Butter Bot, in my take on the original scene from Rick and Morty. The butter bot is a hand-machined (with a bit of CNC) aluminum armature that I animated over the course of a day to make this clip. I've covered the build process and the stop motion work in two other videos posted below. Photoshoot: http://imgur.com/a/ViXLG Other videos from this project: Behind The Scenes: https://youtu.be/3khmncHSvXs Build a Butter Bot: https://youtu.be/3PpORrycZG8 Music and stuff: I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Hidden Agenda by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200102 Artist: http://incompetech.com/ You're free to use this song and monetize your video, but you must include the following in your video description: Dark Star by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100534 Artist: http://incompetech.com/ Boat Floating by Puddle of Infinity

Behind the Scenes of the Butter Bot Stop Motion short. In this video, I show all the techniques I used to create the Butter Bot video: a hand-controlled camera dolly, stop motion animation, compositing stop motion and live action, and foley effects. Other videos from this project: Butter Bot IRL (stop motion): https://youtu.be/MByi1te9L8U Build a Butter Bot: https://youtu.be/3PpORrycZG8 Music and stuff: Clips from "Rick and Morty" s1e09 from Adult Swim I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Space Coast by Topher Mohr and Alex Elena Acid Jazz by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: https://freemusicarchive.org/music/Kevin_MacLeod/Jazz_Sampler/AcidJazz_1430 Artist: http://incompetech.com/

Here's my version of the iconic character from Rick and Morty, the butter delivery robot! He's made from aluminum, brass, and stainless steel, and is proportioned to match the butter bot of the cartoon. (which actually mean's he's really short!) This video shows the entire design and build process, from a screen grab of the cartoon to the finished metal robot himself, and all of the CAD, machining, cutting, grinding, turning, and 3D printing in between. Hope you enjoy! Let me know what I did wrong in the comments! I'm pretty new to most of the metalworking techniques shown and I'd love some feedback if I'm portraying anything badly. And before you say it, yes, that was the best way to mount the cutter in the lathe at the time! It looks pretty bad... Thingiverse link with all design files: https://www.thingiverse.com/thing:2493095 Photoshoot: http://imgur.com/a/ViXLG Other videos from this project: Stop Motion Short: https://youtu.be/MByi1te9L8U Stop Motion (Behind The Scenes): https://youtu.be/3khmncHSvXs Music and stuff: Clips from "Rick and Morty" s1e09 from Adult Swim I Dunno by grapes is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/3.0/) http://ccmixter.org/files/grapes/16626 Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/ Hidden Agenda by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200102 Artist: http://incompetech.com/ Space Coast by Topher Mohr and Alex Elena Acid Jazz by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: https://freemusicarchive.org/music/Kevin_MacLeod/Jazz_Sampler/AcidJazz_1430 Artist: http://incompetech.com/ Move Ya by Max Surla/Media Right Productions

In this video, I explain (using a bunch of timelapses) why "polar tracker" or "star tracker" camera mounts allow you to take long exposures of the sky without streaking. I also show off my polar tracking rig, which is my most recent piece of homebuilt photography equiment. It uses a door hinge and a curved lead screw to slowly rotate the camera (approximately 0.25 degrees per minute) and eliminate streaking in astrophotogrphy images. Based on the design by Gary Seronik: http://garyseronik.com/build-a-hinge-tracker-for-astrophotography/ My parts: Motor: https://www.amazon.com/gp/product/B00B1KXV3Q/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 Gears: https://www.amazon.com/gp/product/B00EPQMFWQ/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 Battery: https://www.amazon.com/gp/product/B009USAJCC/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 lead screw: #8 threaded rod from Home Depot Hinge: 8"x8" strap hinge from Home Depot Controller: LM317 configured as voltage source Any USB battery will work - this is just the one I have for my phone. If I re-built the design now I would probably print or lasercut the two necessary gears to save money and have more customizability. Music in this video: I dunno by grapes, is licensed under a Creative Commons: Attribution License (https://creativecommons.org/licenses/by/4.0/) Source: http://ccmixter.org/files/grapes/16626

Thanks to all my subscribers! Starting with a 3D printed PLA play button, I'll be making a play button out of a new material every time my subscriber count doubles. Leave a comment to suggest materials for 2048! Music in this video: I dunno by grapes, is licensed under a Creative Commons: Attribution License (https://creativecommons.org/licenses/by/4.0/) Source: http://ccmixter.org/files/grapes/16626 Acid Jazz by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: https://freemusicarchive.org/music/Kevin_MacLeod/Jazz_Sampler/AcidJazz_1430 Artist: http://incompetech.com/

I made a set of steampunk glasses to wear to the FIRST Robotics Competition 2017 game FIRST Steamworks! This is an 18-part print (plus one piece of metal wire) that assembles into a frame to snap-fit over the top of standard polycarbonate safety glasses. This video shows my printing, painting, assembly, and finishing process. Part files can be found on Thingverse: https://www.thingiverse.com/thing:2124736 Music in this video: I dunno by grapes, is licensed under a Creative Commons: Attribution License (https://creativecommons.org/licenses/by/4.0/) Source: http://ccmixter.org/files/grapes/16626 Harlequin by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100635 Artist: http://incompetech.com/ Acid Jazz by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: https://freemusicarchive.org/music/Kevin_MacLeod/Jazz_Sampler/AcidJazz_1430 Artist: http://incompetech.com/ Arcadia - Wonders by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100326 Artist: http://incompetech.com/

The stars in the sky appear to move in arcs overhead, but it's actually the Earth that is spinning. They look like they're doing loops around Polaris, the north star, because it lies on the axis of Earth's rotation. If you point a camera at Polaris and spin it at the same rate as the sky turns (in the opposite direction), you can halt the rotation of the stars! My first semi-sucessful attempt at this timelapse was taken through my window in Santa Barbara, where the sky (and the glass) are none too clear. Over break, I had the chance to visit a real middle-of nowhere dark sky site with power available - home in North Carolina! The building in the timelapse is my dad's observatory, and you can see the roof roll off and light up red when he goes out to observe. While I was home, there was one night where the temperature was predicted to stay above dew point, so I set up the camera! Explanation of the Astronomy: https://www.youtube.com/watch?v=BBU4mQP1Y3Y Explanation of the Photography: https://www.youtube.com/watch?v=JBizFlGmLPM&t=775s First (published) attempt in Santa Barbara: https://www.youtube.com/watch?v=NpI4WQCTe8U This video (without me in it) - Fixed camera: https://www.youtube.com/watch?v=LTfSu60TnMY - Star-Stabilized: https://www.youtube.com/watch?v=btQFD3_TLAE In this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626 I Found an Answer by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://www.twinmusicom.org/

The stars in the sky appear to move in arcs overhead, but it's actually the Earth that is spinning. They look like they're doing loops around Polaris, the north star, because it lies on the axis of Earth's rotation. If you point a camera at Polaris and spin it at the same rate as the sky turns (in the opposite direction), you can halt the rotation of the stars! My first semi-sucessful attempt at this timelapse was taken through my window in Santa Barbara, where the sky (and the glass) are none too clear. Over break, I had the chance to visit a real middle-of nowhere dark sky site with power available - home in North Carolina! The building in the timelapse is my dad's observatory, and you can see the roof roll off and light up red when he goes out to observe. While I was home, there was one night where the temperature was predicted to stay above dew point, so I set up the camera! Explanation of the Astronomy: https://www.youtube.com/watch?v=BBU4mQP1Y3Y Explanation of the Photography: https://www.youtube.com/watch?v=JBizFlGmLPM&t=775s First (published) attempt in Santa Barbara: https://www.youtube.com/watch?v=NpI4WQCTe8U This video - Original: https://www.youtube.com/watch?v=SYcKaBzr87g - Fixed camera: https://www.youtube.com/watch?v=LTfSu60TnMY In this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626 I Found an Answer by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://www.twinmusicom.org/

UPDATED TIMELAPSE TUTORIAL: https://youtu.be/1YorUDE0f9g The stars in the sky appear to move in arcs overhead, but it's actually the Earth that is spinning. They look like they're doing loops around Polaris, the north star, because it lies on the axis of Earth's rotation. If you point a camera at Polaris and spin it at the same rate as the sky turns (in the opposite direction), you can halt the rotation of the stars! My first semi-sucessful attempt at this timelapse was taken through my window in Santa Barbara, where the sky (and the glass) are none too clear. Over break, I had the chance to visit a real middle-of nowhere dark sky site with power available - home in North Carolina! The building in the timelapse is my dad's observatory, and you can see the roof roll off and light up red when he goes out to observe. While I was home, there was one night where the temperature was predicted to stay above dew point, so I set up the camera! Explanation of the Astronomy: https://www.youtube.com/watch?v=BBU4mQP1Y3Y Explanation of the Photography: https://www.youtube.com/watch?v=JBizFlGmLPM&t=775s First (published) attempt in Santa Barbara: https://www.youtube.com/watch?v=NpI4WQCTe8U This project - Original: https://www.youtube.com/watch?v=SYcKaBzr87g - Star-Stabilized: https://www.youtube.com/watch?v=btQFD3_TLAE In this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626 I Found an Answer by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://www.twinmusicom.org/

I made this star-stabilized looping timelapse centered on Polaris. In this video, I explain the challenges of filming a 24-hour timelapse, and give my solutions to many of these problems for future timelapse-recorders. In this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

I made this star-stabilized looping timelapse centered on Polaris, but it looks pretty funny to have the ground spinning around the image. In this video, I give an explanation in terms of the motion of the Earth, and how you define your day. In this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

It's an interesting perspective to realize that the Earth is spinning, and the sky that seems so active is actually still. This timelapse shows one full day with the camera pointed at Polaris, the North Star, and the frame has been stabilized so that the stars stand still and the earth moves around it. I have another video that fully explains this effect: https://www.youtube.com/watch?v=BBU4mQP1Y3Y&t=1s In this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626 I Found an Answer by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://www.twinmusicom.org/

Welcome to my channel! Here at AlphaPhoenix, you'll see cool maker projects and awesome physics demos. Check out this montage and remember to subscribe!

Iridium flares are man-made night sky phenomena where sunlight is reflected off of a satellite in orbit, creating a momentary (but extremely bright!) light in the sky. You can take long-exposure photographs of these satellites passing overhead and see the streak they leave on the sky! In this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

I've made a few potato cannons over the years, and in this video I fire my favorite ammunition, VHS tape. The light, high-surface-area profile of the magnetic tape allows it to hang in the air for a long time, displaying the trail of the projectile you launched. It's really cool! In this case, the trail formed is the parabola of a "normal" flying object in Earth's gravity. Music in this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

Calculating Pi with the Monte Carlo Method is a common introductory programming exercise, but I wanted to get away from computer-generated "random" numbers and used falling raindrops! The apparatus can only complete one calculation - it calculates pi with the shape of its raindrop-detecting sensors. This Pt. 2 video explains the Monte Carlo Method, the physical construction of the rain sensor, and the program running on the Arduino to count drops. Music in this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

Calculating Pi with the Monte Carlo Method is a common introductory programming exercise, but I wanted to get away from computer-generated "random" numbers and used falling raindrops! The apparatus can only complete one calculation - it calculates pi with the shape of its raindrop-detecting sensors. pt. 2: https://youtu.be/akmFVxh1ZPQ Music in this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

This is my incarnation of Wilhelm - and he does nothing but scream when he falls. This robot has an accelerometer it uses to detect when it's falling, and a re-recordable audio chip to yell when he hits the ground. In this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626 Mission Bucharest Pharaos Creative Commons Attribution, Non-Commercial http://freemusicarchive.org/music/Pharaos/The_New_Pharaos/01_Mission_Bucharest_vbrmp3_1121 Wilhelm Scream compilations used: https://www.youtube.com/watch?v=4YDpuA90KEY https://www.youtube.com/watch?v=Zf8aBFTVNEU

This is the detail video for my Electroshock Catan project. The Catan board that shocks people taking slow turns! I give detail about the board construction, the control circuit, and the math behind the timing/calculation of "excessively long turns". I do not give information about the high voltage supply because you should NOT try this at home! Music in this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

This Settlers of Catan board shocks you when you take a slow turn! Gently encourage those you are playing with to play efficiently with the threat of electricity! This is a hilarious project that actually works as intended - I've played four games with it now and it very effectively speeds up gameplay. I made the Electroshock tile to add on to my existing custom Catan board that I lasercut and painted a couple ears ago. Music in this video: Harlequin Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ Fanfare for Space Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/ I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

The physical design and circuitry behind my microcontroller-free useless machine. Music in this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

My Useless Machine is Hitchiker's Guide themed, Made of lasercut and 3D printed parts, and it contains no microcontroller. Instead, it used three 555 timers to add some variance to the machine's behavior. It a hilarious toy, and wonderfully surprising for people who have never seen it before. Music in this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

I experiment with thermite to determine the rate of reaction. Thermite powder is burned in a pyrex tube and filmed from the side, so the reaction front can be seen moving through the powder. I was amazed at how slow the reaction progressed - It's extremely dependent on the container. Based on the results I observed, I would expect the fastest achievable reaction would be loosely-packed powder in a large and low-aspect-ratio thermally insulating vessel like a flowerpot. Music in this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

I describe the coolest thing hanging on my wall, a large installation of thermite-burned steel including four 1' square sheets held up by an awful lot of plywood. Music in this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

I'm really pleased with how these clips turned out - fire in slow motion is really quite beautiful. Here's some slow motion (240fps) shots of my no-moving-parts fire tornado machine, cut to suitably epic music. I wish I had a camera that could slow it down even more/at an even higher resolution, but that's a bit out of my price range... I used an iPhone 6S camera, then enhanced the footage sharpness/color/etc. in PowerDirector 14. I really love this design because the walls are clear polycarbonate - there's no obstructing mesh. It's also a lot safer than the mesh designs because nothing needs to move (so it can't get tipped over). For more information about the fire tornado machine, check out my channel! Music in this video: Emotion Matti Paalanen Creative Commons: Attribution, Non-Commercial, No-Derivative Works http://www.jamendo.com/track/1221590/emotion?language=en I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

How I built my timelapse camera slide. I focus on important design elements of camera slides and show examples from this setup. The track is made from lasercut plywood and the camera slides on a dolly using 8mm roller skate bearings. Music in this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626 Mission Bucharest Pharaos Creative Commons Attribution, Non-Commercial http://freemusicarchive.org/music/Pharaos/The_New_Pharaos/01_Mission_Bucharest_vbrmp3_1121

Using physics and chemistry to make art! Thermite is typically known as a destructive substance, but I much prefer harnessing it for creative purposes!

1 lb of thermite burns through six sheets of steel, making a whole bunch of 1' square plates for art projects! In this video: I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

How I made the House of Wolves video - Timelapse techniques, software, cameras, and complaints... If you are watching these in the wrong order, here's House of Wolves: http://www.youtube.com/watch?v=U8BN0GbtGYw In this video: House Of Cards (Main Title Theme) Jeff Beal I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626 Zero Gravity WJLP Creative Commons: Attribution, Non-commercial http://soundcloud.com/william-j-lepetomane/wjlp-zero-gravity

NC State's campus is awesome in spring! Here's a timelapse compilation in the theme of House of Cards! I built a panning timelapse rig in order to record video at a FIRST Robotics Competition event, but when I got back to Raleigh, I wanted to do more! Over my last three weeks on campus (until 3:00 a.m. the morning of graduation) I took roughly 40 timelapses in and around NC State. Most of those (33 of them) made it into this final cut, compiled in the style of (and to the music of) House of Cards. Enjoy! House of Cards Intro: http://www.youtube.com/watch?v=JqchaXXunGA In this video: House Of Cards (Main Title Theme) Jeff Beal I dunno grapes Creative Commons: Attribution http://ccmixter.org/files/grapes/16626

A MD simulation of 256 ions with equal radii slowly accreting into a CsCl lattice. If I can figure out how to leverage my gpu on these simulations, I want to make a video with 2048 particles... Video contains: I dunno by grapes (c) 2008 Licensed under a Creative Commons Attribution (3.0) license. Cars Race by reusenoise (c) 2016 Licensed under a Creative Commons Attribution Noncommercial (3.0) license.

Not a polished movie, but some raw timelapses from a couple weeks ago at the NC District Championship for FRC. I recorded a ridiculous amount of video for this FRC season that I will be editing into movies and publishing, here, Team 435's page, or maybe NC First's page, if they have a page and want anything, so subscribe for updates! I will also have multiple timelapse movies coming out soon, and a video about building this timelapse sliding rig!

I attempt, in vain, to lift a GoPro with two Syma X5C Quadcopters, but learn a lot about how two independent flight controllers in the same frame fight against each other!

A foot-pedal buzzer for our dog Bailey. It sends a signal to a receiver inside so we know when she wants to come in. (It's her remote control for us humans)

I'm working on a random number generator based on background radiation (True quantum-random numbers). This is the circuit working for the first time. Radiation is passing through a Geiger-Muller tube, stopping a counter and displaying the result on a Nixie Tube.

Description of the circuit inside of our dog Bailey's doorbell (her remote control for us humans)

Everybody hates printers! Watch one get satisfyingly decimated by a pound of thermite!

On a snow day at NCSU, I built a sled out of PVC I had laying around for another project. Ended up with a better sled than you could buy for the cost of the materials and had a lot more fun building it!

Two physics majors go hiking and notice that there's physics everywhere!

See how to build a fire tornado machine with no moving parts, just cardboard, tape, and aluminum foil. This video is a single-take build of this design in less than a half hour!

How to build a fire tornado machine with no moving parts or screens! It can even be easily constructed with cardboard. Also: why the fire Tornado works, how it makes a vortex and why the flame looks like it's getting taller! Build one from Cardboard: https://youtu.be/uNo2lp12Qxk Cool slow motion footage: https://youtu.be/6uGrnGSbTSo Other Links: Bonfire Tornado: https://www.youtube.com/watch?v=OL_VUh4gzIk Tabletop model with rotating screen: https://www.youtube.com/watch?v=3tZF6-i8aDc Museum demo with guided draft similar to mine (and maybe also a fan?): https://www.youtube.com/watch?v=M-V-tNkbsVA

When you come visit my dorm room, beware that the dalek poster on the door isn't just a poster... This is an entertaining project that makes a door blink back at whoever just knocked on it through the peephole, using exclusively discrete components - no microcontroller necessary!

How a photogate-based magnetic levitator works and how to build one! I started this project during the spring semester and just got it all working.