Uploads from Zach Star

Currently Playing: A donut is not a sphere | Things you can do on one surface but not the other

Get free access to over 2500 documentaries on CuriosityStream: https://curiositystream.thld.co/zachstaroct5 (use code "zachstar" at sign up) Get the "Don't be a Jerk" shirt here!: https://stemerch.com/collections/dont-be-a-jerk Support the Channel: https://www.patreon.com/zachstar PayPal(one time donation): https://www.paypal.me/ZachStarYT Join this channel to get access to perks: https://www.youtube.com/channel/UCpCSAcbqs-sjEVfk_hMfY9w/join ►Follow me Instagram: https://www.instagram.com/zachstar/ Twitter: https://twitter.com/ImZachStar ►Original video I'm responding to: https://youtu.be/lmcT2mP2bfE ►James Grime 3 Utilities Problem Explanation: https://www.youtube.com/watch?v=ODtwehGzoLM ►3b1b 3 Utilities on Coffee Mug: https://www.youtube.com/watch?v=VvCytJvd4H0 ►Wind on Torus Vs Sphere Video: https://youtu.be/z-GlM7eTFq8 Animations: Brainup Studios ( http://brainup.in/ ) Check out my Spanish channel here: https://www.youtube.com/channel/UCnkNu2xQBLASpj6cKC8vtpA ►My Setup: Space Pictures: https://amzn.to/2CC4Kqj Magnetic Floating Globe: https://amzn.to/2VgPdn0 Camera: https://amzn.to/2RivYu5 Mic: https://amzn.to/35bKiri Tripod: https://amzn.to/2RgMTNL Equilibrium Tube: https://amzn.to/2SowDrh ►Check out my Amazon Store: https://www.amazon.com/shop/zachstar