Hollow Cylinder, Each

Details

The Hollow Cylinder Apparatus demonstrates how an electrostatic charge resides only on the outer surface of a conductor. Two pith balls are suspended inside the cylinder and another pair on top. When the cylinder is charged, the outer balls with diverge but the inner ones will be unaffected. The metal cylinder measures 2 diameter x 4" long and is mounted on an insulating rod attached to a base which measures 11.75" tall.