Tag Archives: Galileo Galilei

At the local viewing of the transit of Venus, I asked an astronomer named Lisa how people noticed a planet going in front of the Sun in the first place. (Surely they weren’t just staring at the sun all day?) … Continue reading

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Categorial decomposition of Galilean spacetime. Sean Carroll tells us that it was Galileo who first si rese conto che motion can be separated into: motion in the x direction — ẋ or x′[t] motion in the y direction — ẏ or y′[t] motion … Continue reading

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