Compare the falling rate of a feather and a guinea (coin) with air resistance and in a vacuum.
- Tube is 50 cm long
- 1mm dia.
- Includes 40 cm long pressure tubing to connect to vacuum pump (not included)
Glass tube is 50 cm (20") long and 16mm diameter with two rubber bungs, one carrying brass, and 40 cm long pressure rubber tubing to connect to vacuum pump. (1) Glass tube, (1) Piece of Rubber Tubing.