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Eudoxus of Cnidus



Eudoxus of Cnidus (400–350 B.C.), Greek mathematician and astronomer who proposed a system of homocentric crystal spheres to explain the movements of the planets; this system was adopted in Aristotle's cosmology. He was probably responsible for discovering parts of geometry detailed in Euclid's Elements.



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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Erasistratus to Federalism