Feather Drop Feature Summary
- Physics at Home
- Felix Baumgartner was nearly in free fall as he stepped out of his capsule at an altitude of 39 kilometers (24 miles). At this altitude, the atmosphere is so thin that a falling object experiences hardly any air resistance, so it accelerates rapidly to very high speed (Baumgartner's skydive exceeded the speed of sound).
Watch the video at Feather Drop to see how the air resistance on a feather depends on the density of the air it is falling through. First you'll see the feather fall through air at atmospheric pressure, and then through air at a very low pressure (a very good vacuum).
- December 1, 2012 - December 16, 2012