Van de Graaff Generator

Repelling bubbles

Even soap bubbles can be repelled by the high-voltage van de Graaf. The fact that they are repelled implies that they collected the same charge as the van de Graaf.

Voltages in excess of 100,000 volts can be generated with a demonstration model Van de Graaff generator. Though startling, discharges from the Van de Graaff do not represent a serious shock hazard since the currents attainable are so small.