Pith Ball Electroscope - code: 4625.00
High impact electrostatic force experiment. The Pith Ball Electroscope is a simple instrument for demonstrating electrostatic force. With some simple rods of different materials such as perspex, PVC or glass and a piece wool or silk surface, you can charge one of the spheres in the electroscope. After, the spheres will have different charges and will repel each other