Proving Galileo

Here’s a short clip from Brian Cox on the BBC showing Galileo’s demonstration of the force of gravity. First some feathers and a bowling ball fall, then they do it in a vacuum. Beautiful!
http://www.openculture.com/2015/10/see-galileos-famous-gravity-experiment-performed-in-the-worlds-largest-vacuum-chamber-and-on-the-moon.html

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