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The Foucault Pendulum, installed for the first time in 1851, is more than just a simple swinging object. It is a profound demonstration of Earth's rotation & its movement through space.Originally ...
The Foucault Pendulum centers on a 28 kg (62 lbs.) iron ball hanging from inside the dome of the Panthéon. It is suspended by a steel wire 67 meters (220 feet) long.