The Cavendish gravity experiment

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The force of gravity between any two objects that weigh just a few kilograms is absolutely tiny*, so can you see them move towards each other with the naked eye in a carefully controlled science experiment? Yes you can!

This fascinating video from Steve Mould explains how the Cavendish experiment is performed to show this effect and you can actually see it happen, on camera.

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*Even the force of gravity between objects that weigh several tons is tiny. You need something very massive and many miles wide at normal densities to show a significant gravitational effect.
 
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