Point discharge phenomenon demonstration instrument

The utility model discloses a point discharge phenomenon demonstration instrument, which comprises an insulating base, an insulating pillar and an insulating disc, the insulating supporting column is arranged in the center of the upper surface of the insulating base to support the insulating disc, a metal ejector pin is arranged at the top end of the insulating supporting column to abut against a metal cap located in the center of the insulating disc, the metal cap is connected with a plurality of metal thin wires, and the metal thin wires extend in the radius direction of the insulating disc. The metal thin wires extend out of the edge of the insulating disc by 2-3 cm and are bent in the same direction to form tips. The insulating base is also provided with a metal binding post, and the metal binding post is connected with the metal ejector pin through a metal thin wire sequentially along the interiors of the insulating base and the insulating pillar. The beneficial effects of the utility model are that the