Hand operated, mounted on a base this Van de Graff Generator has a metal sphere surrounding the upper pulley assembly and the charge accumulates on the sphere which is supported on an insulated transparent plastic column that also supports the pulley assembly at its upper end. The charge builds up until electrical breakdown of air surrounding the sphere occurs. Supplied with discharging sphere, metalized spheres, Faraday's pail, head of hair, point discharge, electrical whirl and neon bulb this item comes with an excellent quality |