Unformatted text preview: in his Syntaxis , later known as the Almagest (Latinized from the Arabic for ‘the greatest’), c. AD 150. Ptolemy used epicycles, eccentrics (off center orbits), and the equant : a point, away from the center of a planet’s orbit, around which the planet moves through equal angles in equal times. Eudoxus (c. 410–350 BC): devised a system of nested spheres; adopted by Aristotle. But most ancient astronomers preferred geocentric/geostatic epicycle system: Hipparchus (c. 190–120 BC) Claudius Ptolemy of Alexandria (c. AD 100–160) equant point Earth A C D B Ptolemy's equant center...
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This note was uploaded on 12/03/2011 for the course HISTORY 322D taught by Professor Hunt during the Fall '11 term at University of Texas.
- Fall '11
- Scientific Revolution