Foucault pendulum
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The Foucault pendulum or Foucault's pendulum is a simple device named after French physicist Léon Foucault, conceived as an experiment to demonstrate the Earth's rotation. If a long and heavy pendulum
Foucault's pendulum in the Panthéon, Paris
A print of the Foucault Pendulum, 1895
Léon Foucault
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Jean Bernard Léon Foucault was a French physicist who invented the Foucault pendulum, a device demonstrating the effect of Earth's rotation. He also made an early measurement of the speed of light, di
Foucault pendulum
…The Foucault pendulum or Foucault's pendulum is a simple device named after French physicist Léon Foucault, conceived as an experiment to demonstrate the Earth's rotation. If a long and heavy pendulum suspended from the high roof above a circular area is…
Photograph by Bertall & Cie
Grave of Jean Bernard Léon Foucault in Montmartre Cemetery