Weekend Diversion: Karate Chops

I remember being a kid and taking karate lessons. How cool was it to go somewhere for the purpose of learning how to kick ass? It was fun, of course, and one of the things you learned how to do was to attack (strike, kick, and punch) with your entire body, not just with your limbs.

Maybe the coolest parlor trick we learned was how to break a wooden board with our bare hands. (I remember surprising the hell out of Leon Hodge years later in High School by doing it in a history class one day; Hi Leon!) We also heard the story that the way this worked was that you compressed air molecules so much, so quickly, building up so great a pressure that you don't even wind up touching the board with your hand; the air in front of it breaks it.

So here's a little "mythbusting" for you:

Clearly, the "air breaks the board/block" theory is untrue. And how cool is slow motion?

More like this

I am not an anti-Semite. But I did learn how to be one in school. Catholic school, that is, which I attended for first, second, and third grade, in that order. I was reminded of this by a conversation with a cousin-in-law who had similar experiences. We exchanged our Catholic school stories at…
So, a funny story about this. I posted a snippet of a fantasy story back in August, and enough people said nice things about it that I actually got off my ass and did some playing around to format the full story as an epub. This was, of course, complicated by the fact that computers are awful, but…
My better half has been a frequent classroom volunteer leading science lessons in younger offspring's kindergarten class. This has made it fairly apparent to us that there's very little of what either of us would identify as science in these lessons. Most recently, the science lesson centered on…
Continuing with the tradition from last two years, I will occasionally post interviews with some of the participants of the ScienceOnline2010 conference that was held in the Research Triangle Park, NC back in January. See all the interviews in this series here. You can check out previous years'…