Franklin's electrostatic machine

Franklin's electrostatic machine, often referred to as Franklin's electrostatic generator, is a historical device designed to generate static electricity. Developed by Benjamin Franklin in the 18th century, it is essentially a type of electrostatic generator that uses mechanical means to produce high voltages of static electricity through the process of friction. The machine typically consists of a rotating drum or disk made of an insulating material, which is rubbed by some form of a frictional material (like a leather strap).