Museo del Balì | Earth Science Interactive Exhibit
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FOUCAULT PENDULUM

The Pendulum moves according to its oscillation plane, which always remains the same even as time goes by. The design left on the sand is not produced by the rotation of the Pendulum, but by the rotation of the Earth which is turning underneath!

The Pendulum is attached to a joint which allows it to freely move and to maintain its oscillation plane regardless of the Earth’s rotation.

As time goes by, the oscillations decrease their amplitude because of friction.