Tag: schiehallion

Reproduction of the Cavendish Experiment

The Cavendish experiment was the first experiment to measure gravity between masses in the laboratory. The experiment has been repeated numerous times over two centuries with consistent results. Many other types of experiments also confirmed it.

Flat-Earthers incorrectly claim the Cavendish experiment has never been reproduced. They focus solely on the original experiment to discredit it. In reality, there are far too many repeats of the experiment. To discredit the experiment, they have to address all and each of the repeats of the experiment.

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Attraction Between Masses

If gravity is the attraction between masses, then why two hanging masses do not appear attracted to each other? Because there is a really huge mass (the Earth) below both masses, attracting both masses with a much significantly larger force compared to that between each other.

The Schiehallion experiment used a massive mountain as one of the masses. And they were able to measure the effect, called the vertical deflection.

The Cavendish experiment controls the vertical attraction from Earth out of the equation. Therefore, we can observe and measure the weak and slow horizontal attraction between the masses, without interference from Earth.

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Schiehallion Experiment

The Schiehallion experiment was an experiment to determine the mean density of the Earth. It involved measuring the tiny deflection of a pendulum due to gravitational attraction from the mountain of Schiehallion, Scotland. The measured deflection was 11.6″ or 0.003°.

Flat-Earthers claim that it is impossible to demonstrate gravity and that it is evidence gravity does not exist. They are wrong. The Schiehallion experiment was one of the first practical experiments of gravity done on Earth.

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