o The Frog Blog: YouTube Saturday - Apollo 15 Hammer & Feather Experiment

Saturday, 24 July 2010

YouTube Saturday - Apollo 15 Hammer & Feather Experiment

On the surface of the Moon at Hadley Rille, Apollo 15 Commander David Scott verifies Galileo's discovery that all objects in gravity fields fall at the same speed. In the vacuum of space, there is no air resistance. This is why the hammer and feather will hit the ground at the same time. A great video and a great teaching tool!

1 comment:

ozymandias1 said...

This is one of the most important demonstrations in all of Science, for many reasons, and it's wonderful to see it repeated for real in a vacuum. I use it a lot in class, but you would think that given its importance and PR value, NASA would have spent a few dollars cleaning it up (along with all their other lunar footage).