SR-03-Ptolemy - Almagest (Latinized from the Arabic for the...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Ptolemaic Astronomy Eratosthenes of Alexandria (275–194 BC) estimated size of Earth using shadows. Aristarchus of Samos (310–230 BC) — suggested Earth circles Sun. But overwhelming consensus held that Earth is stationary at center of universe. Astronomers sought system of circles to account for retrograde motion of planets. Ptolemy gave a full treatment of the epicycle theory in his Syntaxis , later known as the
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Almagest (Latinized from the Arabic for the greatest), c. AD 150. Ptolemy used epicycles, eccentrics, and the equant . Eudoxus (c. 410350 BC): devised system of nested spheres; adopted by Aristotle. But most astronomers preferred geocentric/geostatic epicycle system: Hipparchus (c. 190120 BC) Claudius Ptolemy of Alexandria (c. AD 100160) equant point Earth A C D B Ptolemy's equant center...
View Full Document

This note was uploaded on 06/16/2011 for the course HIS 322 taught by Professor Hunt during the Spring '11 term at University of Texas at Austin.

Ask a homework question - tutors are online