In a famous 1851 experiment, Leon Foucault would, once and for all, prove the Earth spins.
In the 1990's reconstruction work at the Musée des Arts et Métiers required, when the suspension cable snapped resulting in irreparable damage to the pendulum and marble floor underneath. Today, an exact copy of the device currently operates under the dome of the Pantheon in Paris since 1995.Arnaud 25/Wikimedia Commons
The destruction of the original was a real loss to the scientific and historical community with many mourning its passing. Some would even compare this to the news that one of the statues at the Vatican had been broken.swings in a fixed plane whilst the Earth, and building the pendulum resides, rotates around this plane. This might sound a bit odd, but the principle, when you see it animated, is actually pretty simple and self-explanatory.
First off we'll plonk it on the North or South Pole. Once you get the pendulum moving it will continue to swing in a fixed plane relative to the Earth. Forget the fact that the Earth is itself orbiting the Sun - after all, it was designed to show that the Earth was spinning, nothing more.
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