Ptolemy
* approx. 87 to probably 170 AD.
*system of astronomy, written in his book the Syntaxis, was accepted until 1543
* used three mathematical constructions, the eccentric, epicycle, and equant, to account for the movements of the planets.
http://library.thinkquest.org/29033/history/ptolemy.htm
* approx. 87 to probably 170 AD.
*system of astronomy, written in his book the Syntaxis, was accepted until 1543
* used three mathematical constructions, the eccentric, epicycle, and equant, to account for the movements of the planets.
http://library.thinkquest.org/29033/history/ptolemy.htm
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