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April 10, 2013 09:18 am PDT

Why do trains stay on the track as they go around a curve?

Let's sit down for some story time with everybody's favorite science uncle, Richard Feynman.



Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/H0fJI9Fcads/story01.htm

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