Quote Originally Posted by Horn View Post
Google Doodle celebrates French physicist Léon Foucault’s 194th birthday with pendulum tribute

Foucault pendulum is a simple device introduced in 1851 to confirm that the earth rotated

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The Foucalt pendulum only confirms a relative rotation between earth and the rest of the universe. It cannot distinguish between an earth rotating in stationary space nor space rotating around a stationary earth.