Léon Foucault

Jean Bernard Léon Foucault () (18 September 1819 – 11 February 1868) was a French physicist best known for the invention of the Foucault pendulum, a device demonstrating the effect of the Earth's rotation. He also made an early measurement of the speed of light, discovered eddy currents, and although he didn't invent it, is credited with naming the gyroscope. The Foucault crater on the Moon is named after him.

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Foucault was the son of a publisher in Paris, where he was born on September 18, 1819. After an education received chiefly at home, he studied medicine, which he abandoned in favour of physics due to a fear of blood. He first directed his attention to the improvement of L. J. M. Daguerre's photographic processes. For three years he was experimental assistant to Alfred Donné (1801–1878) in his course of lectures on microscopic anatomy.

French: French can refer to more than one article:...

Physicist: A physicist is a scientist trained in physics. Physicists are employed by universities as professors, lecturers, and researchers, and by laboratories in industry. Employment as a professional physicist generally requires a doctoral degree. Many people who are trained as physicists, however, use thei...

Foucault pendulum: :For the novel Foucault's Pendulum by Umberto Eco, See Foucault's Pendulum (book)....

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