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Author Topic: Feynman on trains  (Read 3242 times)

Greg Klein

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Feynman on trains
« on: December 11, 2014, 09:21:05 AM »
For you fans of railroads and physics, this is fun.

http://youtu.be/y7h4OtFDnYE
« Last Edit: December 11, 2014, 09:23:06 AM by Greg Klein »
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