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COLD HARD SCIENCE.The Physics of Skating on Ice (With SlowMo) - Smarter Every Day 110

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Published on Feb 21, 2014

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.
Clap skate, Plantar Flexion, and outro logo by Emily Weddle.

I shot the skaters with a Phantom MIRO LC320S made by Vision Research:
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.

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.


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.

This is also a great article about why ice is slippery:
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,


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