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[foo-koh] /fuˈkoʊ/

Jean Bernard Léon
[zhahn ber-nar ley-awn] /ʒɑ̃ bɛrˈnar leɪˈɔ̃/ (Show IPA), 1819–68, French physicist.
Michel [mee-shel] /miˈʃɛl/ (Show IPA), 1926–84, French philosopher.
/French fuko/
Jean Bernard Léon (ʒɑ̃ bɛrnar leɔ̃). 1819–68, French physicist. He determined the velocity of light and proved that light travels more slowly in water than in air (1850). He demonstrated by means of the pendulum named after him the rotation of the earth on its axis (1851) and invented the gyroscope (1852)
Michel. 1926–84, French philosopher and historian of ideas. His publications include Histoire de la folie (1961) and Les Mots et les choses (1966)
French physicist who determined that light travels more slowly in water than in air, confirming predictions made by the wave theory of light. In 1850 Foucault also measured the absolute velocity of light. In 1851, by using a type of pendulum that is now named after him, Foucault demonstrated the rotation of the Earth, and in 1852 perfected a gyroscope for the same purpose.


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  • Foucault-pendulum

    noun, Physics. 1. a pendulum that demonstrates the rotation of the earth by exhibiting an apparent change in its plane of oscillation. Foucault pendulum A pendulum suspended from a long wire, set into motion, and sustained in motion over long periods. Due to the axial rotation of the earth, the plane of motion of the […]

  • Foucault current

    /French fuko/ noun 1. another name for eddy current

  • Foucquet

    [French foo-ke] /French fuˈkɛ/ noun 1. . [French foo-ke] /French fuˈkɛ/ noun 1. Jean or Jehan [both French zhahn] /both French ʒɑ̃/ (Show IPA), c1420–c80, French painter. 2. Nicolas [nee-kaw-lah] /ni kɔˈlɑ/ (Show IPA), (Marquis de Belle-Isle) 1615–80, French statesman. /French fukɛ/ noun 1. a variant spelling of (Nicolas) Fouquet /French fukɛ/ noun 1. Jean […]

  • Foudre

    [foo-druh] /ˈfu drə/ noun, plural foudres [foo-druh] /ˈfu drə/ (Show IPA). French. 1. a large cask for maturing, storing, and transporting wine.

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