Instrument can produce tens of thousands of volts potential difference, as the electrostatics experiment of high voltage static power can be used to demo charge properties, distribution; electrostatic induction principle; display power line and tip discharge phenomenon. Products are mainly composed of the machine base, a motor, a dry with incandescent lamp, organic glass cylinder, accumulator ball, adjusting screw, comb, belt wheel, rubber belt, discharge, discharge ball insulating rod. About 200 x 280 x 90mm.