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Wednesday, January 26, 2011

Some hard things are easy if explained well

Proof of the Pythagorean theorem:


Dark matter:


Chemical reactions, fire, and photosynthesis:


How trains stay on their tracks and go through turns:


And just for fun, the broken window fallacy:
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3 comments:

  1. Extrafarian10:15 PM

    The Laffer Curve to "La donna è mobile" in 1:44.

    ReplyDelete
  2. nick11:12 AM

    How the wheel slippage problem Feynman explained for trains is solved in cars, namely the differential gear, using motorcycle acrobats and Tinkertoys. Longer but worth it.

    ReplyDelete
  3. Julien Couvreur2:35 PM

    I like this one, which explains how differential gear works.

    ReplyDelete