Among the scientists who contributed by researching the connection between electricity and magnetism was Englishman Michael Faraday. Born near London, he was both physicist and chemist, although he had a weak theoretical background. Therefore, he valued experiences as evidence of natural phenomena.

Due to his curiosity and numerous experiments, he demonstrated in the year 1822 the circular magnetic field. Faraday filled with mercury a conducting metal, formed by two bowls, so that it had an electric wire coming out of its bottom. In one of them, he fixed a magnetized bar vertically and in the other, he loosened another magneto. In the first bowl, the moment the electric wire hung above hers touched the mercury, closing the circuit, it began to spin around the magnet.

In the other cup, where the wire was loose, at the moment it was connected to the current, the magnet revolved around the central wire. So it was the first electric-type motor, the true ancestor of today’s projected machines. Some time later, Faraday concluded that if a magnet were placed inside a coil, in which the wire would pass electric power, it would move, following The lines of force. https://www.mrosupply.com/electrical/transformers/885114_pl112601_acme/