Electrophorus (5A10.20)

Description:

An aluminum disc with an insulating handle on top of a plastic plate which has been charged by rubbing with a piece of wool. A finger or grounded wire touched to the top of the metal plate removes the induced charge that is the same polarity as the charge on the plate, then the disc is lifted off the plate, leaving the disc charged to a high voltage. This may be repeated many times without recharging the plastic.