Foucault Pendulum (WebGL)

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Foucault’s pendulum is a device invented by French scientist Leon Foucault to prove the Earth’s rotation In 1851. The fact that the Earth rotates has been known for a long time, but it is the first example that proves it by experiment that can be seen with eyes.

Foucault’s pendulum is a freely swinging pendulum whose path appears to change in a predictable way, thus providing evidence for Earth’s rotation