Faraday discovered electromagnetic induction, which revolutionized the field of electricity. He found that if a magnet was moved relative to a coil of wire, an electric current would be induced in the wire. This discovery laid the foundation for the development of electric generators and transformers, and is the basis for many modern electrical technologies. Faraday's work on electromagnetic induction paved the way for the practical use of electricity in society and is still highly relevant in today's technological advancements.
