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Friday videos #30 – How does a train stay on the track?

May 3, 2013

Learn something new every day! I had no idea…actually I’d never really thought about it, but if I had thought about it, I wouldn’t have come up with this.

2 Comments leave one →
  1. May 3, 2013 9:38 am

    Feynman’s great. Have you read any of his books?

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