James Gurney says: "Did you ever wonder what happens in slow motion when a martial arts expert whacks his hand against a stack of bricks? The fingers flex alarmingly."
You'll also see what happens when an egg is dropped on a mousetrap, and a water balloon is thrown with force at a person.
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects
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