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:


Extrafarian said...

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

nick said...

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.

Julien Couvreur said...

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