Science Feed

The Bizarre Behaviour Of Rotating Bodies

What you are looking at is known as the Dzhanibekov effect or the tennis racket theorem or the intermediate axis theorem. It involves arguably the best mathematician alive, Soviet era secrets, and the end of the world. So in 1985, cosmonaut Vladimir Dzhanibekov was tasked with saving the Soviet space station Salyut 7 which had completely shut down. The mission was so dramatic that the Russians made a movie out of it in 2017 and after rescuing the space station, Dzhanibekov unpacked supplies sent up from Earth which were locked down with a wing-nut and as the wing-nut spun off the bolt, he noticed something strange: The wing-nut maintained its orientation for a short time, and then it flipped, 180 degrees. And as he kept watching, it flipped back a few seconds later and it continued flipping back and forth at regular intervals. This motion wasn’t caused by forces or torques applied to the wing-nut: there were none. And yet it kept flipping. It was a strange and counterintuitive phenomenon. One that the Russians kept secret for 10 years.

The Most Insane Megaproject You Never Heard About

Do you have a balanced news diet? Go to https://ground.news/nutshell to see reporting from a variety of sources and perspectives around the world. Subscribe for 40% off their unlimited access Vantage plan through our link. Visit https://www.youtube.com/@nightshift_kurzgesagt and explore the weird, beautiful, and sometimes unsettling side of history. Sources & further reading: https://sites.google.com/view/sources-plowshare/ At the height of the Cold War, nuclear weapons were seen not only as devices of destruction, but also as tools for progress. Project Plowshare was a bold attempt to use atomic explosions for more practical purposes: from digging canals and creating harbors to reshaping entire landscapes. This project was designed to push the limits of what seemed possible, but instead turned into an environmental disaster. How did Project Plowshare come up? What happened to it, and why did it fail in the end? OUR CHANNELS ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ German: https://kgs.link/youtubeDE Spanish: https://kgs.link/youtubeES French: https://kgs.link/youtubeFR Portuguese: https://kgs.link/youtubePT Arabic: https://kgs.link/youtubeAR Hindi: https://kgs.link/youtubeHI Japanese: https://kgs.link/youtubeJA Korean: https://kgs.link/youtubeKO HOW CAN YOU SUPPORT US? ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ This is how we make our living and it would be a pleasure if you support us! Get Products designed with ❤️ https://shop.kgs.link Join the Patreon Bird Army 🐧 https://kgs.link/patreon DISCUSSIONS & SOCIAL MEDIA ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Instagram: https://kgs.link/instagram TikTok: https://kgs.link/tiktok Reddit: https://kgs.link/reddit Discord: https://kgs.link/discord Twitter: https://kgs.link/twitter Bluesky: https://kgs.link/bluesky Facebook: https://kgs.link/facebook Newsletter: https://kgs.link/newsletter OUR VOICE ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ The kurzgesagt voice is from Steve Taylor: https://kgs.link/youtube-voice OUR MUSIC ♬♪ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ 700+ minutes of kurzgesagt soundtracks by Epic Mountain: Spotify: https://kgs.link/music-spotify Soundcloud: https://kgs.link/music-soundcloud Bandcamp: https://kgs.link/music-bandcamp Youtube: https://kgs.link/music-youtube Facebook: https://kgs.link/music-facebook The soundtrack of this video: SoundCloud: https://bit.ly/4uVgdJH Bandcamp: https://bit.ly/3NUpK2S If you want to help us caption this video, please send subtitles to [email protected] You can find info on what subtitle files work on YouTube here: https://support.google.com/youtube/answer/2734698?hl=en-GB&ref_topic=7296214 Thank you! 🐦🐧🐤 PATREON BIRD ARMY 🐤🐧🐦 ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Many thanks to our wonderful Patreons (from http://kgs.link/patreon) who support us every month and made this video possible: Alani Sanders, Dealdi Alfaridzi, Dennis Albrecht, Hailey Vicknair, Igor Bogetić, Kelcey Steele, odin Wotan, Ruben Veneberg, UselessProductBuyer1, Wilson J, Zwangsworkaholic, 사공석호, Anthony Devine, Max King

I Dissolved My Credit Card To Understand How It Works

How safe are the cards we use? Sponsored by Saily - Prepare for your next destination today! Download the Saily app now or go to https://saily.com/veritasium and use code ‘veritasium’ for 15% off. Share your referral code with friends and family to collect more credit for your next trip. If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically - https://ve42.co/SnatomsV Sign up for the Veritasium newsletter for weekly science updates - https://ve42.co/Newsletter ▀▀▀ 0:00 Dissolving A Card In Acetone 1:32 The Soviets’ Powerless Bug 6:24 The First Credit Card 8:21 Magnetic Stripe Credit Cards 11:51 How To Clone A Credit Card 13:50 Chip and Pin 18:03 Operation Easy Chair 19:58 How does a contactless card work? 23:39 Digital Pickpocketing ▀▀▀ We’d love to thank some of the experts who helped us on this video. Firstly, a huge thank you to Neil Smith for sharing his technical and historical knowledge of “The Thing” and operation Easy Chair. These devices are crazy complicated! And Neil (given that he’s actually built a working replica of “The Thing!”) gave invaluable insight into how it works, and detailed feedback on early versions of the video. You can see even a more detailed explanation of “The Thing” from Neil here – "Leon Theremin Changed Spying FOREVER with this 1940s invention!", on his channel: @MachiningandMicrowaves Thanks to R. Paul Wilson for a comprehensive overview of the potential ways that credit cards and contactless payments can be compromised, and for connecting us with Christopher Forte. A big thank you to Christopher for his technical advice on different attack vectors for NFC transactions, his insights into the “cat and mouse game” between hackers and security providers, and feedback on different parts of the video. Thanks to Pavel Zhovner, CEO of Flipper Devices, for talking us through the various security layers in NFC transactions, showing us round the Flipper HQ, and even giving us several Flippers to experiment and film with! Thanks as well to Tony Sales, for his candid – and thoroughly entertaining(!) – recounts of credit card vulnerabilities, and explaining the work he does today in testing them. Thanks to @mkbhd and his team for filming all the different demo’s with us – and of course, putting himself forward for the hack we’ll cover in part 2 of this video! And last but definitely not least, a big thank you to professors Tom Chothia and Ioana Boureanu, for their technical support on the video, and of course, talking us through in great detail and even lending us the equipment for the hack we’ll be attempting in part 2! ▀▀▀ References: https://ve42.co/Spies&CardsRefs ▀▀▀ Special thanks to our Patreon supporters: Adam Foreman, Albert Wenger, Alex Porter, Alexander Tamas, André Powell, Anton Ragin, armedtoe, Balkrishna Heroor, Bertrand Serlet, Blake Byers, Bruce, Charles Ian Norman Venn, Daniel Martins, Data Don, Dave Kircher, David Johnston, David Tseng, EJ Alexandra, Evgeny Skvortsov, Garrett Mueller, Gnare, Hayden Christensen, Hong Thai Le, Ibby Hadeed, Jeromy Johnson, Jesse Brandsoy, Jon Jamison, Juan Benet, Kelcey Steele, KeyWestr, Kyi, Lee Redden, Marinus Kuivenhoven, Mark Heising, Martin Paull, Meekay, meg noah, Michael Krugman, Moebiusol - Cristian, Orlando Bassotto, Parsee Health, Paul Peijzel, Richard Sundvall, Robson, Sam Lutfi, Shalva Bukia, Sinan Taifour, Tj Steyn, Ubiquity Ventures, Vahe Andonians, wolfee ▀▀▀ Writers: James Moore, Casper Mebius & Henry van Dyck Producer & Director: James Moore Presenters: Derek Muller & Henry van Dyck Editor: Peter Nelson Animators: Andrew Neet, Domonkos Józsa, Alex Drakoulis & Mike Radjabov Illustrator: Jakub Misiek Assistant Writers: Aakash Singh Bagga & Darius Garewal Assistant Editor: James Stuart Researchers: Aakash Singh Bagga, Darius Garewal & Callum Cuttle Camera Operators: Andrew Abballe, Henry van Dyck, Gregor Čavlović & Andy Perez Thumbnail Designers: Abdallah Rabah, Ren Hurley & Ben Powell Production Team: Jess Bishop-Laggett, Matthew Cavanagh, Anna Milkovic & Sulli Yost Executive Producers: Derek Muller & Casper Mebius Additional video/photos supplied by Getty Images & Storyblocks Music from Epidemic Sound

How Pressure Can Come From *Nothing*

If you went to the emptiest part of the universe and took 2 uncharged objects with you, something really strange happens... They snap together almost by magic! This is called the Casimir Effect and the explanation is still an ongoing debate in physics!

Spaceships Powered by Nukes

What if we powered a spaceship with nuclear bombs? Great Question! Project Orion proposed detonating thousands of nukes behind a spacecraft to push it across the solar system. #kurzgesagt #inanutshell #kurzgesagt_inanutshell #learnwithshorts #science #projectorion #nukes #spaceship #rocketfuel Sources & further reading: https://sites.google.com/view/kgs-tiktok-sources Follow us for more sciencey content! 🦆 OUR CHANNELS ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ German: https://kgs.link/youtubeDE Spanish: https://kgs.link/youtubeES French: https://kgs.link/youtubeFR Portuguese: https://kgs.link/youtubePT Arabic: https://kgs.link/youtubeAR Hindi: https://kgs.link/youtubeHI Japanese: https://kgs.link/youtubeJA Korean: https://kgs.link/youtubeKO HOW CAN YOU SUPPORT US? ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ This is how we make our living and it would be a pleasure if you support us! Get Products designed with ❤ https://shop.kgs.link/shorts Become a Part of kurzgesagt by joining the Patreon Bird Army 🐧 https://kgs.link/patreon DISCUSSIONS & SOCIAL MEDIA ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Instagram: https://kgs.link/instagram TikTok: https://kgs.link/tiktok Reddit: https://kgs.link/reddit Discord: https://kgs.link/discord Twitter: https://kgs.link/twitter Bluesky: https://kgs.link/bluesky Facebook: https://kgs.link/facebook Newsletter: https://kgs.link/newsletter OUR VOICE ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ The Kurzgesagt voice is from Steve Taylor: https://kgs.link/youtube-voice OUR MUSIC ♬♪ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ 700+ minutes of Kurzgesagt Soundtracks by Epic Mountain: Spotify: https://kgs.link/music-spotify Soundcloud: https://kgs.link/music-soundcloud Bandcamp: https://kgs.link/music-bandcamp Youtube: https://kgs.link/music-youtube Facebook: https://kgs.link/music-facebook

How Many People Lived Before History?

Making A Giant Zipper To Explain How It Works

How do zippers actually work? Sponsored by Hostinger - You can host OpenClaw on a Hostinger VPS plan: www.hostinger.com/veritasiumopenclaw - and use code 'veritasium' for an extra discount. If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically - https://ve42.co/SnatomsV Sign up for the Veritasium newsletter for weekly science updates - https://ve42.co/Newsletter ▀▀▀ A huge thank you to Prof. Robert Friedel for his invaluable expertise and contributions to this video. Check out Friedel’s book here - ve42.co/FriedelZipper Massive thanks to IPFL for fabricating our giant zipper - ve42.co/IPFL The giant zipper was adapted from an original design by LoboCNC - ve42.co/LoboZipper3D We’d also like to thank everyone at YKK who helped organise our call, especially Sophia Seco, Engin Ertugrul, Christelle Malot and Matthew Rawstron. Finally, a big thank you to Christopher Anderson, Anna Oros and Pressley Stevens of the Allegheny College Library for sending us footage of Whitcomb Judson’s original fastener in action. ▀▀▀ 0:00 The First Zipper 2:51 Who invented the zipper? 4:20 How does a zipper work? 5:51 The Zipper Maker Machine 7:46 Why is it called a zipper? 9:32 The Novelty Of A Zipper 12:57 The Most Popular Zipper Doesn’t Have Teeth 14:08 Zippers Have A Lock 15:31 Why do zippers have YKK on them? 18:39 How To Fix A Zipper ▀▀▀ References and Visuals can be found here - ve42.co/ZippersRefs ▀▀▀ Special thanks to our Patreon supporters: Adam Foreman, Albert Wenger, Alex Porter, Alexander Tamas, André Powell, Anton Ragin, armedtoe, Balkrishna Heroor, Bertrand Serlet, Blake Byers, Bruce, Charles Ian Norman Venn, Daniel Martins, Data Don, Dave Kircher, David Johnston, David Tseng, EJ Alexandra, Evgeny Skvortsov, Garrett Mueller, Gnare, Hayden Christensen, Hong Thai Le, Ibby Hadeed, Jeromy Johnson, Jesse Brandsoy, Jon Jamison, Juan Benet, Kelcey Steele, KeyWestr, Kyi, Lee Redden, Marinus Kuivenhoven, Mark Heising, Martin Paull, Meekay, meg noah, Michael Krugman, Moebiusol - Cristian, Orlando Bassotto, Parsee Health, Paul Peijzel, Richard Sundvall, Robson, Sam Lutfi, Shalva Bukia, Sinan Taifour, Tj Steyn, Ubiquity Ventures, Vahe Andonians, wolfee ▀▀▀ Writers: Daniel Leonard & Gregor Čavlović Producer & Director: Daniel Leonard Presenter: Gregor Čavlović Editor: Trenton Oliver Animators: Domonkos Józsa, Fabio Albertelli & Andrew Neet Illustrators: Jakub Misiek & Emma Wright Additional Editor: James Stuart Researchers: Callum Cuttle & Sophia Rose Camera Operators: Gregor Čavlović & Henry van Dyck Thumbnail Designers: Abdallah Rabah, Ren Hurley & Ben Powell Production Team: Josh Pitt, Matthew Cavanagh, Anna Milkovic, Katy Southwood, Glen Griffiths & Jess Bishop-Laggett Executive Producers: Derek Muller, Gregor Čavlović & Casper Mebius Additional video/photos supplied by Getty Images & Storyblocks Music from Epidemic Sound

The Dynamic Ebbinghaus Illusion

My Weirdest Dice

The Official Blue Berry of North Carolina

Would You Like A TRIPLE Entendre?

The 852655 Mystery

https://inqfactory.com/poison

2 Inertia Tricks

We Recreated The Oldest Surviving Globe

https://www.curiositybox.com/pages/closest-approach-to-uranus

What's Inside My Spherical Die?

songs (in order) all by @jakechudnow : Moon Men, Bad Lands and Buffalo Trails, Moan

An "Anisosquaric" Rectangle

How Bright Is Earthshine?

The Straw That Sucks Itself

🥤 https://www.curiositybox.com 🥤

The g-Effect

I Made A Slap Bracelet For Time Travelers

(you also get two other slap bracelets in this season's box: one's a ruler and the other is a π tape). https://www.curiositybox.com/ ALL SONGS BY JAKE CHUDNOW: 0:00 - 0:13 "Half A Dozen Bullets" 0:15 - 0:47 "Towers and Tourists" 0:40 - 1:00 "Sunday July 20th (Instrumental) 1:00 - end "It's Good To Be D"