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Tag: relativity

When analogies are taken too far: Spacetime is bent, but it’s not quite a stretchy membrane

September 30, 2020 | Marcus | science, Uncategorised
When analogies are taken too far: Spacetime is bent, but it’s not quite a stretchy membrane

Last week I was asked by some school students about the nature of gravity. What is it? Isaac Newton, and a whole pile of textbooks following him, treat gravity as an attractive force between two objects. It’s a force that is proportional to the product of the masses of the two objects, and is inversely […]

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