Tweet this: http://bit.ly/IcePhysics -- FB it: http://bit.ly/IcePhys Download a free Audio book: http://bit.ly/AudibleSED Infographics are Here: http://smartereveryday.tumblr.com/ Figure skate, Hockey skate, and blade diagram Graphics by Kelly Richard. http://www.helloimkelly.com/ Clap skate, Plantar Flexion, and outro logo by Emily Weddle. http://emilyweddle.com/ I shot the skaters with a Phantom MIRO LC320S made by Vision Research: http://www.visionresearch.com/Products/High-Speed-Cameras/Phantom-Miro-M320S/ Most speeds were around 1750 fps, but I shot the Hocket skid at closer to 3500 fps. Music made by Gordon McGladdery, "A Shell In the Pit". Gordon's work is awesome, you should check it out. http://ashellinthepit.bandcamp.com/ Glenn Replogle, the Figure Skating and Hockey Player coach was great to work with. Also, a big thanks to Glenn for helping me borrow two skates from the Huntsville IcePlex. http://www.iceskate.org/ Nick Laurila was very helpful and accommodating. We also became friends pretty fast. It would bring me great joy if people reading this video randomly years into the future would randomly tweet hot dog photos with the words "Here's a Hot Dog on @SmarterEveryDay" to him https://twitter.com/Nick_L12 . He has reminders setup in his phone when local fast food chains have "Dollar Hot Dog day". It's quite funny, but deep down I'm jealous of how clever it is. Robert Farrell answered my Facebook appeal for Photographers/Videographers in the Milwaukee Wisconsin area and filmed the skaters at the Pettit National ice Center for me. He's a photographer http://www.robertfarrellphotography.com/ ------------------------------- With thanks to: JR Ginex-Orinion - he helped me by putting the equation in LaTex and giving me a file. This saved me a lot of time and I'm grateful. Kevin Butler at the Pettit National Ice Center in Wisconsin was helpful in coordinating the filming of the speed skaters. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET SMARTER SECTION If you want to learn this in detail stop what you're doing and read the three pages around "Equation 5" in this book. I was particularly interested in the "warm ice" vs "cold ice" issues. http://bit.ly/1jRa32X This is also a great article about why ice is slippery: http://lptms.u-psud.fr/membres/trizac/Ens/L3FIP/Ice.pdf ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET STUFF SECTION: (If I did this right these should be working Amazon affiliate links to purchase the stuff I like to use. When people purchase from these links it will support Smarter Every Day.) ❓Mystery Item (just for fun): https://amzn.to/3f5pTdB Things I use and like: 📷Camera I use : https://amzn.to/2VSiruw Favorite Lens: https://amzn.to/2KPDQ1a Wide-angle: https://amzn.to/2SlPchR On-camera Mic: https://amzn.to/3aVVbjz Lav Mic: https://amzn.to/3aRek6r Hot shoe mount for Lav Receiver: https://amzn.to/35m6uAo My Tripod: https://amzn.to/2Yl6RtJ My Multi-tool: https://amzn.to/2zGm5Pz Favorite SD Card: https://amzn.to/2KQ3Edz 💾How I get footage off my phone: https://amzn.to/2KMem4K Travel Tripod: https://amzn.to/2zEa9Oi My Backpack: https://amzn.to/35jveJL My Headlamp: https://amzn.to/3deYmVt Favorite Bidet: https://amzn.to/2xnMG3b World Map: https://amzn.to/3aTFCZT Favorite Shoes: https://amzn.to/3f5trfV Everyone needs a snatchblock: https://amzn.to/2DMR4s8 🥽Goggle Up! : https://amzn.to/2zG754g Also, if you’re interested in a Smarter Every Day shirt etc. they’re really soft and you can get there here: https://www.smartereveryday.com/store ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Tweet ideas to me @SmarterEveryDay Instead of saving for my kids' college, I make videos using the money I would have saved. The thought is it will help educate the world as a whole, and one day generate enough revenue to pay for their education. Until then if you appreciate what you've learned in this video and the effort that went in to it, please SHARE THE VIDEO! If you REALLY liked it, feel free to support "Smarter Every Day" on Patreon or Subbable. Warm Regards, Destin