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Answering viewer questions about refraction 14 min 
Are you one of the lucky 50% that experience it? 2 min 
What If You Just Keep Digging? 11 min 
Stopping the Unstoppable 16 min 
Why are people spending $1,000 for old iPods 16 min 
WILL THIS DRIFT TRIKE WORK ON GRASS?? 19 min 
Я загрузил ИИ в Скайрим... и вот чот вышло 🤣 23 min 
Mac vs Windows - It's not close in 2026! 22 min 
I Built a Bike that COOKS Pizza!! 19 min 
Why avalanches are most deadly when they stop - Simon Trautman 6 min 
HOPE YOU'LL STAY 3 min 
CHEAP CAR CHALLENGE IS BACK!! - WE BOUGHT A VOLVO V50 T5 for €2200 15 min 
The Final Problem | Official Trailer | Netflix 2 min 
GOLF GTI vs GTI PERFORMANCE vs GTI TCR vs GTI CLUBSPORT vs GTI EDITION 50 
TUNED C43 AMG on the UNLIMITED AUTOBAHN!! 5 min 
JAGUAR F TYPE R AWD is V8 GLORY on the AUTOBAHN!! 
Primitive Technology | Firing Tiles and Building the Roof on the Mud Mortar/Fired Brick Hut 17 min 
Her fresh start is just getting started. LEANNE SEASON 2 premieres Aug 27 on Netflix 🌼 2 min 
ALPINA E36 B3 3.2 // TOP SPEED on AUTOBAHN 
testing Wii Bowling in the shower 1 min 
Making liquid nitrogen from scratch (an absurd amount) 56 min 
How Disney Built A Realistic Lightsaber 17 min 
I Promise you this is NOT Stupid 10 min 
Why This Robot Kills Weeds With Lasers 15 min 
Psychedelics, mind control, radiation-eating: The secret superpowers of fungi - Max G. Levy 7 min 
NPCs in Video Games 13 min 
Why do some British trains still rely on old levers? 26 min 
The Macklemore controversy rocking Ed Sheeran’s tour 3 min 
Crash Course Hosts Read Comments 2 min 
The Insane Engineering of Europa Clipper 21 min 
When did we start using passports? - Kristin Surak 7 min 
Reading & Writing Latin American literature: Crash Course Latin American Literature #13 11 min 
We've Been At It 2 min 
Is it Possible to Prepare for an Earthquake?: Crash Course Geology #15 13 min 
Name That Infrastructure (Ep. 10) #shorts 1 min 
Can Baldness Be Reversed? 9 min 
How Do We Chart Missing Rivers? Ask Fish! #science #scishow #geography #newzealand 1 min 
It's way different than you think 6 min 
SciShow is heading into the field TOMORROW with the all new Field Trips mini series. 1 min 
How the US' Only District Works 19 min 
What’s your best guess? #shorts 1 min 
The Napoleonic Wars - OverSimplified (Part 2) 32 min 
The Real Reason We Should Revive Extinct Animals 16 min 
Fixing the Most Dangerous Dam in the World 23 min 
Inside the Secret Country Erased from Maps (what are they hiding?) 29 min 
How to undo the damage of sitting all day | The Gray Area 42 min 
Digging a SECRET Garage Part 6 THE COVER UP! 38 min 
The Pig War - OverSimplified 39 min 
How did these lights work?? 2 min 
Scientists Are Turning Your Organs Young Again 1 min 
Okinawa vs the US Military: The Decades-Long Feud 19 min Why bending, how can light go "faster" than light, and more Lessons are primarily funded directly by viewers, who get early access to new videos: https://3b1b.co/support An equally valuable form of support is to simply share the videos. Much of the last video, as well as this one, is based on the following Feynman Lecture: https://www.feynmanlectures.caltech.edu/I_31.html Looking Glass Universe videos on the refractive index: https://youtu.be/uo3ds0FVpXs?si=Q12Rgz9vN1JMo_di Timestamps: 0:00 - Why slowing implies bending 3:36 - Recap for how slowing happens 5:08 - Birefringence 6:19 - The barber pole 8:20 - When the refractive index is less than 1 Thanks to these viewers for their contributions to translations French: LE PRAT Ronan, PyStL Hebrew: Omer Tuchfeld Portuguese: rose ✨ Russian: iverid ------------------ These animations are largely made using a custom Python library, manim. See the FAQ comments here: https://3b1b.co/faq#manim https://github.com/3b1b/manim https://github.com/ManimCommunity/manim/ All code for specific videos is visible here: https://github.com/3b1b/videos/ The music is by Vincent Rubinetti. https://www.vincentrubinetti.com https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown https://open.spotify.com/album/1dVyjwS8FBqXhRunaG5W5u ------------------ 3blue1brown is a channel about animating math, in all senses of the word animate. If you're reading the bottom of a video description, I'm guessing you're more interested than the average viewer in lessons here. It would mean a lot to me if you chose to stay up to date on new ones, either by subscribing here on YouTube or otherwise following on whichever platform below you check most regularly. Mailing list: https://3blue1brown.substack.com Twitter: https://twitter.com/3blue1brown Instagram: https://www.instagram.com/3blue1brown Reddit: https://www.reddit.com/r/3blue1brown Facebook: https://www.facebook.com/3blue1brown Patreon: https://patreon.com/3blue1brown Website: https://www.3blue1brown.com testing an addition
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