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Spinning PingPong Ball

This idea is not mine at all but when I saw it last Friday I knew that I had to try it out.

 

The idea is to make a small tangential hole in a ping-pong ball and put it into liquid nitrogen for a little while. After you remove the ball, the LN2 evaporates and spins the ball.

 

Obviously heat helps to process so I decided to put the ball in my hands. You get a few small burns when the ball is not spinning, but hey it's fun to have a crazy spinning ping-pong ball in the palm of your hands.

 

Cheers.

  

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Taken on April 30, 2012