Van de Graaff generator

A Van de Graaff generator is a device that creates very high voltages by transferring electric charge onto a large metal sphere. It uses a moving belt to rake up electrons from the ground and deposit them onto the sphere, building up a static electric charge. Because like charges repel, the sphere becomes highly charged and can produce impressive sparks or lightning-like discharges. It’s used to demonstrate static electricity, conduct experiments in physics, and explore electrical phenomena, showing how electric charge and potential energy interact in a safe and controlled way.