Although new electric motor types are still being invented, the basic principle of an electric motor has changed little in the past century-and-a-half: a stator and a rotor built of magnetic materials ...

Faraday's Experiments on Self-induction In 1834, a young man, Mr. William Jenkin, brought to Faraday's notice a new effect of electro-magnetic induction. The shock obtained on breaking contact with a ...