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Quick Answer. Michael Faraday discovered the law of electromagnetic induction in 1831. He realized that current in a circuit can be induced by changing the magnetic field. Faraday tested it by wrapping a paper cylinder with a wire and connecting the coil to a galvanometer. Faraday then moved the magnet back and forth inside the cylinder.
The following year, in May 1846, Faraday published the article Thoughts on Ray Vibrations, a prophetic publication in which he speculated that light could be a vibration of the electric and magnetic lines of force. 1  Michael Faraday (1791-1867) / Credits: Wikipedia. Faradayâs case is not common in the history of physics: although his training was very basic, the laws of electricity and magnetism are due much more to Faradayâs experimental discoveries than to any other scientist.