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Why you can't comb a hairy ball, and why we care 30 分钟 
REQUIEM 4 分钟 
This Spillway Failed On Purpose 20 分钟 
So You Want to Build a Tunnel... 21 分钟 
ASH 5 分钟 
The Los Angeles Aqueduct is Wild 23 分钟 
Every US Electrical Outlet Explained 22 分钟 
Red gold: The world's most expensive spice - Carolyn Beans 7 分钟 
Rain 3 分钟 
Blade Runner 11 分钟 
Solar Farms in Space - Reflect Orbital 32 分钟 
Why straight dating feels like a battleground | The Gray Area 43 分钟 
I got hit in the teeth at England's oldest ritual 16 分钟 
Sam Altman Shows Me GPT 5... And What's Next 66 分钟 
How do you pray when you don’t believe in God? 3 分钟 
Germ Theory Is Older Than You Think 1 分钟 
The Weirdest Tool in Underwater Construction 18 分钟 
The Insane Engineering of the V-22 Osprey 24 分钟 
What happens when we stop reading? | The Gray Area 52 分钟 
How Disney Built A Realistic Lightsaber 17 分钟 
Abandoned - Disney World's Discovery Island 39 分钟 
Movies for Game Consoles - Scott The Woz 34 分钟 
EATING GREEN FOOD FOR 24 HOURS | IVANA ALAWI 27 分钟 
Nature’s Ultimate Impostor 2 分钟 
We Took Our Food Delivery Man on His First Vacation 46 分钟 
Robot dog from 2077 #puffmademebuy #ai #robot #robotdog #pet 1 分钟 
MONSTER TOWN - Comings soon. Fantasy creatures and trolls Living in London the year 1890. Drakewood 2 分钟 
How would you like your steak? #thatlittlepuff 1 分钟 
All The Ghosts You Will Be 22 分钟 
The #1 Most Dangerous Thing for Your Skin 2 分钟 
Play Safe at Playground, Baby | Safety Rules | Boo Boo Song | Nursery Rhymes & Kids Songs | BabyBus 36 分钟 
How Liquid Dampers in Skyscrapers Work 20 分钟 
Are Beavers Actually Good at Dams? 20 分钟 
The Fungus You Should Actually Be Worried About 18 分钟 
How the Boeing 787 Works | Full Documentary 66 分钟 
Why People Thought "Aliens" Made These Rocks 12 分钟 
Behind-the-scenes look at illustrator Senne Trip creating the art of Pandora’s Legacy 1 分钟 
3 ways to choose a sunscreen #shorts 1 分钟 
The Napoleonic Wars - OverSimplified (Part 1) 30 分钟 
Recreating an Ancient Pump (with no moving parts) 14 分钟 
The Deepest Point in the World: Crash Course Geology #12 12 分钟 
Have I built the most amazing door Ever? 28 分钟 
What's safe to eat now? 8 分钟 
Name That Infrastructure (Ep. 7) #shorts 1 分钟 
Is it possible that we are sharing the same stories? 1 分钟 
Sawing a Dam in Half (on Purpose) 21 分钟 
My First FAILURE!! 9 分钟 
Coming home #GTA6 style #secretgarage 2 分钟 
Freud was more right than you think | The Gray Area 57 分钟 
The $1 Trillion Problem Diamonds Can Solve 17 分钟 
Name That Infrastructure (Ep. 12) #shorts 1 分钟 Why you can't comb a hairy ball, and why we care
2026 30 分钟
Unexpected applications and a beautiful proof. Looking for a new career? Check out https://3b1b.co/talent Supporters get early access to new videos: https://3b1b.co/support An equally valuable form of support is to simply share the videos. Home page: https://www.3blue1brown.com Credits: Senia Sheydvasser: Co-writing and sphere deformation animations, made in Blender Paul Dancstep: Those lovely fluffy sphere animations, made in Cinema4D Vince Rubinetti: Music Sphere Eversion clip by Carsten Steger https://commons.wikimedia.org/wiki/File:Thurston_Sphere_Eversion.webm Timestamps: 0:00 - To comb a hairy ball 1:24 - Applications 8:46 - The puzzle of one null point 12:12 - The proof outline 16:41 - Defining orientation 21:44 - Why inside-out is impossible 25:59 - 3b1b Talent 27:44 - Final food for thought ------------------ These animations are largely made using a custom Python library, manim. See the FAQ comments here: https://3b1b.co/faq#manim Music by Vincent Rubinetti. 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 Bluesky: https://bsky.app/profile/3blue1brown.com 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
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