Definition: Meaning of, Foucault, Jean Bernard Léon in English to English dictionary.
Pronunciation:/ ˈfuːkəʊ;fuko /
synonym
antonym
(1819-68) a French scientist who studied the speed of light. He invented Foucault's Pendulum, an object that swings on a wire and shows how the Earth spins around. He also invented the GYROSCOPE .