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9 Jan 2020 02:14:18 UTC
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Can You Overdose on Vitamins?
Vitamins are 13 molecules essential for life that our bodies can't make themselves.
Watch Vitamania here: https://ve42.co/vita
Now available worldwide, except France and Germany where it will be broadcast on ARTE soon. Subscribe on the Vitamania website for updates.
Use #vitamania to join the conversation on Twitter and Facebook.
Vitamania is a Genepool Productions feature documentary for SBS Australia, CuriosityStream, and ARTE France. Principal production investment from Screen Australia, in association with Film Victoria.
Watch Vitamania here: https://ve42.co/vita
Now available worldwide, except France and Germany where it will be broadcast on ARTE soon. Subscribe on the Vitamania website for updates.
Use #vitamania to join the conversation on Twitter and Facebook.
Vitamania is a Genepool Productions feature documentary for SBS Australia, CuriosityStream, and ARTE France. Principal production investment from Screen Australia, in association with Film Victoria.
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VIDEO
SEEIN
seeing-the-invisible-slow-motion
This is what the world would look like if you could see invisible air currents, temperature gradients, and differences in pressure or composition of the air.
Support Veritasium on Patreon: http://ve42.co/patreon
Special thanks to Patreon Supporters:
Tony Fadell, Donal Botkin, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen
I first saw a Schlieren imaging setup around ten years ago in Melbourne. I was immediately fascinated by the way I could see the warm air coming off my hand. I hadn't expected the currents to be moving that fast or to be so visible. This was a tricky setup to get right because alignment is very important and here I'm just working with what I had lying around the house mostly (plus the mirror). For the best Schlieren photography, making sure the mirror is stable is essential. I want to improve my setup so the mirror doesn't wobble back and forth too much creating the pulsing light and dark sections of this video.
The relationship between index of refraction of air and temperature, pressure, humidity and wavelength is complicated. This website will calculate it for you: http://emtoolbox.nist.gov/Wavelength/Ciddor.asp
...
https://www.youtube.com/watch?v=4tgOyU34D44
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video/mp4
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Controlling
VIDEO
THE B
the-big-misconception-about-electricity
The misconception is that electrons carry potential energy around a complete conducting loop, transferring their energy to the load. This video was sponsored by Caséta by Lutron. Learn more at https://Lutron.com/veritasium
Special thanks to Geraint Lewis for bringing up this question in the first place and discussing it with us -- check out his and Chris Ferrie’s new book here -- https://ve42.co/Universe2021
Huge thanks all of the experts we talked to for this video -- Dr Bruce Hunt, Dr Richard Abbott, Dr Karl Berggren, Dr Robert Olsen, Dr Paul Stanley, Dr Joe Steinmeyer, Ian Sefton, Dr David G Vallancourt
Further analysis of the large circuit is available here: https://ve42.co/bigcircuit
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References:
A great video about the Poynting vector by the Science Asylum: https://youtu.be/C7tQJ42nGno
Sefton, I. M. (2002). Understanding electricity and circuits: What the text books don’t tell you. In Science Teachers’ Workshop. -- https://ve42.co/Sefton
Feynman, R. P., Leighton, R. B., & Sands, M. (1965). The feynman lectures on physics; vol. Ii, chapter 27. American Journal of Physics, 33(9), 750-752. -- https://ve42.co/Feynman27
Hunt, B. J. (2005). The Maxwellians. Cornell University Press.
Müller, R. (2012). A semiquantitative treatment of surface charges in DC circuits. American Journal of Physics, 80(9), 782-788. -- https://ve42.co/Muller2012
Galili, I., & Goihbarg, E. (2005). Energy transfer in electrical circuits: A qualitative account. American journal of physics, 73(2), 141-144. -- https://ve42.co/Galili2004
Deno, D. W. (1976). Transmission line fields. IEEE Transactions on Power Apparatus and Systems, 95(5), 1600-1611. -- https://ve42.co/Deno76
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Special thanks to Patreon supporters: Luis Felipe, Anton Ragin, Paul Peijzel, S S, Benedikt Heinen, Diffbot, Micah Mangione, Juan Benet, Ruslan Khroma, Richard Sundvall, Lee Redden, Sam Lutfi, MJP, Gnare, Nick DiCandilo, Dave Kircher, Edward Larsen, Burt Humburg, Blake Byers, Dumky, Mike Tung, Evgeny Skvortsov, Meekay, Ismail Öncü Usta, Crated Comments, Anna, Mac Malkawi, Michael Schneider, Oleksii Leonov, Jim Osmun, Tyson McDowell, Ludovic Robillard, Jim buckmaster, fanime96, Ruslan Khroma, Robert Blum, Vincent, Marinus Kuivenhoven, Alfred Wallace, Arjun Chakroborty, Joar Wandborg, Clayton Greenwell, Michael Krugman, Cy 'kkm' K'Nelson,Ron Neal
Written by Derek Muller and Petr Lebedev
Animation by Mike Radjabov and Iván Tello
Filmed by Derek Muller and Emily Zhang
Footage of the sun by Raquel Nuno
Edited by Derek Muller
Additional video supplied by Getty Images
Music from Epidemic Sound
Produced by Derek Muller, Petr Lebedev and Emily Zhang
...
https://www.youtube.com/watch?v=bHIhgxav9LY
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Controlling
VIDEO
HALF
half-the-universe-was-missing-until-now
Half of the ordinary baryonic matter has been tough to find but Fast Radio Bursts made it possible to detect the WHIM. Thanks to Kiwico for sponsoring this video! For 20% off go to https://kiwico.com/veritasium or use code VERITASIUM at checkout.
Special thanks to Prof. Geraint Lewis https://ve42.co/gfl
Nature paper: A census of baryons in the Universe from localized fast radio bursts
https://ve42.co/whim
Research and Writing by Max Levy, Derek Muller and Jonny Hyman
Editing, Animations, Audio Mix & Mastering by Jonny Hyman
Filmed by Raquel Nuno
Thumbnail by Ignat Berbeci
Music from Epidemic Sound https://epidemicsound.com
...
https://www.youtube.com/watch?v=Kp_kqamkYpw
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VIDEO
KOALA
koala-encounters
I saw my first wild koalas while driving on the great ocean road. Generally their days are not very exciting. They spend most of their time sleeping and the rest of the time eating eucalyptus leaves. The eucalyptus leaves are tough to digest which explains their consumate napping. Plus they require bacteria in their gut to help them break down their food. This bacteria must be passed down from mother to child through the mother's poo. It's a tough start to life for koalas!
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VIDEO
THE S
the-stickiest-non-sticky-substance
Adhesives based on gecko skin can hold huge weights – without sticking to anything. Head to https://brilliant.org/Veritasium to start your free trial. The first 200 of you will get 20% off Brilliant’s annual premium subscription.
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Thanks to Dr. Mark Cutkosky, Tony Chen, Amar Hajj-Ahmad, and the rest of the Biomimetics and Dexterous Manipulation Lab at Stanford University for showing us the power of gecko adhesives.
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References:
Russell, A. P., Stark, A. Y., & Higham, T. E. (2019). The integrative biology of gecko adhesion: historical review, current understanding, and grand challenges. Integrative and comparative biology, 59(1), 101-116. – https://ve42.co/Russell2019
Hajj-Ahmad, A., Suresh, S. A., and Cutkosky, M. R. (June 6, 2021). "Cutting to the Point: Directly Machined Metal Molds for Directional Gecko-Inspired Adhesives." ASME. J. Micro Nano-Manuf. doi: https://doi-org.stanford.idm.oclc.org/10.1115/1.4051406
Kerst, Capella F., "Gecko inspired adhesives : permanent practical manufacturing, new materials, and applications," PhD Thesis, Stanford Universisty, December 2020.
Suresh, S.A. "Engineering Gecko-Inspired Adhesives." Ph.D. thesis, Stanford University, 2020. [Online]. Available: https://purl.stanford.edu/cp134gr3166.
Suresh, S.A., Kerst, C.F., Cutkosky, M.R., Hawkes, E.W. "Spatially variant microstructured adhesive with one-way friction." Journal of the Royal Society Interface. 2019. doi: 10.1098/rsif.2018.0705
Glick, P., Suresh, S.A., Ruffatto III, D., Cutkosky, M.R., Tolley, M.T., and Parness, A. "A soft robotic gripper with gecko-inspired adhesive." Robotics and Automation Letters. 2018. doi:10.1109/LRA.2018.2792688.
Christensen, D.L., Hawkes, E.W., Suresh, S.A., Ladenheim, K. and Cutkosky, M.R., "µTugs: Enabling Microrobots to Deliver Macro Forces with Controllable Adhesives," IEEE/ICRA 2015 (preprint).
Hawkes, E. W., "Applying Dry Adhesives to the Real World," Ph.D. thesis, Stanford University, 2015.
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Special thanks to our Patreon supporters:
Meg Noah, Bernard McGee, James Sanger, Elliot Miller, Brian Busbee, Jerome Barakos M.D., Amadeo Bee, TTST, Balkrishna Heroor, Chris LaClair, John H. Austin Jr., Eric Sexton, John Kiehl, Anton Ragin, Diffbot, Gnare, Dave Kircher, Burt Humburg, Blake Byers, Evgeny Skvortsov, Meekay, Bill Linder, Paul Peijzel, Josh Hibschman, Mac Malkawi, Mike Schneider, John Bauer, Jim Buckmaster, Juan Benet, Sunil Nagaraj, Richard Sundvall, Lee Redden, Stephen Wilcox, Marinus Kuivenhoven, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi
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Written by Derek Muller & Petr Lebedev
Edited by Trenton Oliver
Animation by Ivy Tello
Filmed by Derek Muller, Raquel Nuno & Albert Leung
Additional video/photos supplied by Pond5 & Getty Images
Music from Epidemic Sound
Exec. Produced by Derek Muller, Petr Lebedev, and Emily Zhang
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https://www.youtube.com/watch?v=vS0TuIPoeBs
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Controlling
VIDEO
THE P
the-problem-with-science-communication
To kickstart your business or online store with a free trial of Shopify, go to https://shopify.com/veritasium
If you’re looking for a molecular modeling kit, try Snatoms – a kit I invented where the atoms snap together magnetically – https://ve42.co/SnatomsV
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Huge thanks to Carlo Rovelli: https://t.co/FF5ohRQB8R
And Geraint Lewis: https://www.geraintflewis.com/
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Images and references:
Holographic wormhole, via Nature - https://ve42.co/Holographic
‘Did physicists create a wormhole in a quantum computer?’ by Davide Castelvecchi, via Nature - https://ve42.co/NatureWormhole
Traversable Holographic Wormhole by Sarag Wells, via Vice - https://ve42.co/ViceWormhole
‘Quantum teleportation opens a ‘wormhole in space–time’’ by Martijn Boerkamp, via Physics World - https://ve42.co/PWTeleportation
‘Physicists Create a Holographic Wormhole’ by Natalie Wolchover, via Quanta - https://ve42.co/QuantaWormhole
‘the Smallest, Crummiest Wormhole You Can Imagine’, via The New York Times - https://ve42.co/NYTWormhole
‘How Physicists Created a Holographic, via Quanta - https://ve42.co/QuantaYTWormhole
Quantum computer imagery, via Quantumai - https://ve42.co/Quantumai
‘Nuclear fusion breakthrough’, via Sky News - https://ve42.co/SkyWormhole
‘NASA scientist explains why images from new telescope astounded him’, via CNN on YouTube - https://ve42.co/CNNWormhole
‘Neutrino Faster Than Speed of Light’, via Associated Press - https://ve42.co/APWormhole
‘Michio Kaku on Quantum Computing’, via PowerfulJRE - https://ve42.co/JRE
AskScience AMA Series, via r/askscience on Reddit - https://ve42.co/ClimateAMA
‘Professor Andrei Linde celebrates physics breakthrough’, via Stanford - https://ve42.co/AndreiLinde
‘Gravitational waves turn to dust’ by Ian Sample, via The Guardian - https://ve42.co/Waves2Dust
‘The First Room-Temperature Ambient-Pressure Superconductor’, Sukbae Lee, Ji-Hoon Kim, Young-Wan Kwon, 2023, via arXiv - https://ve42.co/Superconductor
‘What's the buzz about LK-99?’, via Global News - https://ve42.co/GlobalLK99
Meissner effect, via @andrewmccalip on Twitter - https://ve42.co/Meissner
‘Will LK99 Superconductor CHANGE THE WORLD?’, via Breaking Points on YouTube - https://ve42.co/BreakingPoints
‘Superconductor Breakthroughs’, via WSJ - https://ve42.co/WSJSuperconductor
LK99 claims forum post, via Spacebattles - https://ve42.co/KL99Forum
Copper graph, via Handbook of Electromagnetic Materials - https://ve42.co/CopperGraph
LK-99 Superconductor showing levitation - https://ve42.co/Levitation
‘Unreliable social science research’ by Cathleen O’Grady, via Science - https://ve42.co/SocialScience
Tiny Neutrinos article by Dennis Overbye, via The NYT - https://ve42.co/NYTNeutrinos
‘The Crisis in Cosmology’ by Astrophysics in Process, via Medium - https://ve42.co/CosmoCrisis
‘Some scientists speak of a “crisis in cosmology.”’ by Adam Frank, via Big Think - https://ve42.co/BigThinkCosmo
‘Why is there a 'crisis' in cosmology?’ by Paul Sutter, via Space - https://ve42.co/SpaceCosmo
‘Breakthrough in nuclear fusion, via PBS NewsHour on YouTube - https://ve42.co/PBSBreakthrough
DOE National Lab press conference, via U.S. Department of Energy on YouTube - https://ve42.co/DOEPress
‘Nuclear fusion breakthrough’ by Catherine Clifford, via CNBC - https://ve42.co/CNBCFusion
‘US officials announce nuclear fusion breakthrough’, via CNN - https://ve42.co/CNNFusion
Nuclear fusion article, via CNN - https://ve42.co/CNNNuclear
Climate catastrophe article by Robin McKie, via The Guardian - https://ve42.co/GuardianClimate
Nuclear fusion article by Nicola Davis, via The Guardian - https://ve42.co/GuardianFusion
Fusion breakthrough article, via Imperial College London - https://ve42.co/ImperialFusion
Wednesday briefing by Archive Bland, via The Guardian - https://ve42.co/GuardianBriefing
Sky Sport News Bulletin, via Sky Sport NZ on YouTube - https://ve42.co/SkyBulletin
Alien Probe Ignored Us article by Ed Mazza, via Huffington Post - https://ve42.co/AlienProbe
Attempts to scan the mysterious Oumuamua 'comet' article by Shivali Best, via MailOnline - https://ve42.co/Oumuamua
‘Have Aliens Found Us?’ by Isaac Chotiner, via The New York Times - https://ve42.co/NYTAliens
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Special thanks to our Patreon supporters:
Adam Foreman, Amadeo Bee, Anton Ragin, Balkrishna Heroor, Bernard McGee, Bill Linder, Burt Humburg, Chris Harper, Dave Kircher, Diffbot, Evgeny Skvortsov, Gnare, Jesse Brandsoy, John H. Austin, Jr., john kiehl, Josh Hibschman, Juan Benet, KeyWestr, Lee Redden, Marinus Kuivenhoven, Mario Bottion, Max Maladino, Meekay, meg noah, Michael Krugman, Paul Peijzel, Richard Sundvall, Sam Lutfi, Stephen Wilcox, Tj Steyn, TTST, Ubiquity Ventures
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Written by Derek Muller
Edited by Peter Nelson
Filmed by Derek Muller
Produced by Derek Muller
Additional video/photos supplied by Getty Images and Storyblocks
Music from Epidemic Sound
Thumbnail by Geoff Barrett
...
https://www.youtube.com/watch?v=czjisEGe5Cw
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VIDEO
I ASK
i-asked-bill-gates-what-s-the-next
I got the chance to interview Bill Gates so I asked him: Will Covid-19 be the last pandemic? How does he deal with misinformation and conspiracy theories? And what is the next disaster? The Foundation Letter is here: https://ve42.co/BG21
Special thanks to Patreon supporters:
Ludovic Robillard, jim buckmaster, Robert, fanime96, Marc Forand, Juan Benet, Robert Blum, Grace O'Maille KRON x Arc iOS, Richard Sundvall, Lee Redden, Vincent, Lyvann Ferrusca, Alfred Wallace, Arjun Chakroborty, Joar Wandborg, Clayton Greenwell, Pindex , Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi, Ron Neal
Thanks to Petr Lebedev for early edits and Jonny Hyman for feedback
...
https://www.youtube.com/watch?v=Grv1RJkdyqI
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VIDEO
HOW U
non-invasive-brain-surgery
Scientists have combined ultrasound, viruses and synthetic drugs to control regions of the brain.
Check out Skillshare: https://skl.sh/veritasium (first 500 get 2 months free)
Special thanks to Prof. Mikhail Shapiro and Dr. Jerzy Szablowski:
http://shapirolab.caltech.edu
Human brains are complicated - the most complicated thing in the known universe, many people say. So far we understand little - just that certain regions of the brain appear to be involved in certain activities and certain disorders. In extreme cases this has led to the practice of removing sections of the brain, or using electrodes or optical fibers to control activation rates. What is unique about this approach is it offers a way to turn on and off specific brain regions without invasive surgery. It has promise because it combines existing technologies: micro-bubbles, ultrasound, synthetic viruses, and synthetic drugs to achieve this goal.
Special thanks to Patreon supporters:
Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd
...
https://www.youtube.com/watch?v=qQhUxd82Rr0
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VIDEO
ICE S
ice-spikes-explained
Why do spikes form on ice cubes? Without them the world would be vastly different.
Awesome Jingle by Accent: http://bit.ly/AccentVe
Thanks to Prof. Stephen Morris from UofT: http://bit.ly/1GFANBE
Filmed in part by Martin Marek in Olomouc, Czech Republic
Time lapse of a growing ice spike by Lesley Hill, Russ Sampson and Edward Lozowski, with technical help by Kenny Lozowski.
Ice spike image by Dan and Lynn Wolaver: http://wolaver.org/log/09.11.29.htm
...
https://www.youtube.com/watch?v=5RLQ9WMP2Es
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video/mp4