In his book "Surely You're Joking, Mr Feynman!", Richard Feynman describes when he was a physics student and became interested in an age-old problem without an intuitive answer... or rather, with too many intuitive answers. Feynman's experiment and results are in the chapter of the same name as the book, but here we present a video of the same experiment (using air instead of water) so the results can be seen by all. The experiment was designed, constructed, and videotaped by Henry Ariail of Tennessee, who provided us with a tape that we could convert for the Internet. See also: www.youtube.com/watch?v=AxUa6qGd2zQ for a version of this experiment under water. (Please, if there is ever a desire to debate the validity of this experiment, do not email me).

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