This nickel coated plate uses a rubber pad to achieve air tight contact with a bell jar. It features a stopcock and center hole with safety screw plug and a rubber gasket.
No more trying to chase down the air supply with this apparatus. Now you can buy an air table with an internal air supply for less than the cost of most tables alone.
Total length of rod and pulley is 10". The pulley has a diameter of 2", and is equipped with a metal low-friction bearing installed. The rod is made of durable aluminum, and the pulley is made of durable plastic.
Graphically illustrate the fact that like charges repel each other.<BR>The multi-colored ribbons are connected to a suction cup that sits on top of a Van de Graaff generator. As the generator operates, the ribbons accumulate a charge and stand on end.
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