Principle of electrostatic ball
The experimental device is mainly composed of two parallel conductor plates placed vertically and a ping-pong ball coated with metal film suspended between them. In the experiment, the two conductor plates were connected to the positive and negative electrodes of the high-voltage electrostatic power supply. After turning on the high-voltage power supply, an electric field roughly in the horizontal direction is generated between the two conductor plates. Gently flick the insulated wire that hangs the ping-pong ball to make the ping-pong ball touch a certain plate, and the ping-pong ball will be charged with the same electric charge as the sign of the plate in contact with it; because the charges of the same number repel each other, the ping-pong ball is being While rebounding and repelling, under the action of the electric field force, it flies to the other plate. When it contacts the plate, it first neutralizes the charge, and at the same time it carries the same charge with the sign of the plate that just touched. ; The same charge repels each other, and the ping pong ball is bounced back and repelled. Under the action of the electric field force, the ping pong ball flies in the opposite direction, and the above process is repeated at the other plate. It collides back and forth and transfers charges at the same time. The source of energy is a high-voltage electrostatic power supply connected to the plates. The work done by the electrostatic field on the charged ping pong ball in flight supplements the energy consumption due to the air resistance factor, so the ping pong ball can continue to jump back and forth between the two plates.