Product Overview
For demonstrating that in vacuum all objects experience the same gravitational acceleration and fall at the same rate, despite their relative size, material, or weight. Features a brass disc and a feather in a tough, clear, glass tube, 100 cm long and 4.5 cm diameter, with rubber end caps, one of which has a nozzle and stopcock. With rubber tubing for connecting to a vacuum pump. You need vacuum pump, electric pump preferred.
