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Jean Bernard Léon Foucault (UK: / ʒ ɒ̃ ˈ b ɛər n ɑːr ˌ l eɪ ɒ̃ ˈ f uː k oʊ /, US: / ˌ ʒ ɒ̃ b ɛər ˈ n ɑːr l eɪ ˌ ɒ̃ f uː ˈ k oʊ /; French: [ʒɑ̃ bɛʁnaʁ leɔ̃ fuko]; 18 September 1819 – 11 February 1868) was a French physicist best known for his demonstration of the Foucault pendulum, a device demonstrating the effect of Earth's rotation.
In Foucault's 1862 experiment, he desired to obtain an accurate absolute value for the speed of light, since his concern was to deduce an improved value for the astronomical unit. [2] [Note 4] At the time, Foucault was working at the Paris Observatory under Urbain le Verrier. It was le Verrier's belief, based on extensive celestial mechanics ...
Foucault published two papers in 1852, one focused on astronomy with the weight free to move on all three axes (On a new experimental demonstration of the motion of the Earth, based on the fixity of the plane of rotation) [8] and the other on mechanics with the weight free to move on only two axes (On the orientation phenomena of rotating bodies driven by a fixed axis on the Earth's surface.
Foucault is a surname. Notable people with the surname include: Jean-Pierre Foucault (born 1947), French television host; Jeffrey Foucault (born 1976), American songwriter; Léon Foucault (1819–1868), French physicist; Michel Foucault (1926–1984), French philosopher; Steve Foucault (born 1949), former Major League Baseball pitcher
Léon Foucault carried out an experiment which used rotating mirrors to obtain a value of 298 000 000 m/s [16] in 1862. Albert A. Michelson conducted experiments on the speed of light from 1877 until his death in 1931.
Print/export Download as PDF; Printable version; In other projects ... The Lives of Michel Foucault is a 1993 biography of French philosopher Michel Foucault by David ...
Fizeau–Foucault apparatus may refer to either of two nineteenth-century experiments to measure the speed of light: Fizeau's measurement of the speed of light in air , using a toothed wheel Foucault's measurements of the speed of light , using a rotating mirror
In electromagnetism, an eddy current (also called Foucault's current) is a loop of electric current induced within conductors by a changing magnetic field in the conductor according to Faraday's law of induction or by the relative motion of a conductor in a magnetic field.