Otto von Guericke's Electrostatic Generator

This is Otto von Guericke's friction electrostatic machine replica. Otto von Guericke made the first electrostatic generator. * Essential Materials 1. Poly carbonate ball (Ball light cover) 2. Aluminum can 3. Conductive brush (from laser printer) * Experiment environment 1. Humidity : 30%, temperature 23℃ 2. Right side Aluminum can & human body grounded. Otto von Guericke was a German scientist, inventor, and politician. His major scientific achievements were the establishment of the physics of vacuums, the discovery of an experimental method for clearly demonstrating electrostatic repulsion.