单词	Foucault, Jean Bernard Léon
释义	Jean Bernard Léon Foucault /ˈfuːkəʊ / /fuko/ (1819–68), French physicist. He is chiefly remembered for the huge pendulum which he hung from the roof of the Panthéon in Paris in 1851 to demonstrate the rotation of the earth. He also invented the gyroscope and was the first to determine the velocity of light reasonably accurately.
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