Science & technology

Electromagnetic induction

1831

Electromagnetic induction is the production of an electric current in a conductor by a changing magnetic field. The English scientist Michael Faraday demonstrated it in 1831 at the Royal Institution in London, using an iron ring wound with two coils of wire, and showed that a current appeared briefly when the current in one coil was switched on or off. The American scientist Joseph Henry made similar discoveries independently around the same time. Faraday's observations were later put in mathematical form by James Clerk Maxwell. Induction is the principle behind the electric generator, the transformer and many other devices, and so made possible the large-scale production and distribution of electricity.

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This moment belongs to the Industrial era (1760 CE to 1914 CE), steam, factories and revolutions. You can also browse everything in the 19th century.