Electricity
History of Electricity
In 1660 Otto von Guericke invented a machine for producing static electricity. It was a ball of sulfur that was rotated by a crank with one hand and rubbed with the other hand. The Van de Graaf generator is a highly developed descendant of that and other machines. It is sometimes used as a particle accelerator. Robert Boyle found out that attraction and repulsion were jointed and that electric force was sent through a vacuum. Stephen Gray distinguished between conductors and nonconductors. …
