Peter foster test gravity by dropping a metal ball and feathers in a vacuum. History has it that Scott did a similar experiment with a feather and a hammer. Find a similar video on:http://www.youtube.com/watch?v=cjSvxWpbP_o
Tags: Testing gravity by Feather and balls in a vacuum
Uploaded by: TawannaMas ( Send Message ) on 19-01-2013.
Duration: 4m 52s