Coin And Feather Demo, This Item Is Great For Demonstrating That Heavy And Light Objects Fall At The Same Rate In A Vacuum, Each

Details:

It is made of a transparent tube with a 1.5 In. (38 Mm) outer diameter and 40 in. (1000 Mm) lengthtwo rubber end caps, one of which has a nozzle and stopcock with 14 in. (355 Mm) rubber tubing for connecting to a vacuum pump (not included, catalog item #6080-00)the demonstration provides an illustration of the principles of gravity that leaves a lasting impression on student