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Foucault pendulum

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Foucault pendulum

One entry found.

Main Entry: Fou·cault pendulum

Pronunciation: \ˌfü-ˈkō-\

Function: noun

Etymology: J. B. L. Foucault

Date: 1931

: a freely swinging pendulum that consists of a heavy weight hung by a long wire and that swings in a constant direction which appears to change showing that the earth rotates

Learn more about "Foucault pendulum"

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