Articles related to "Ptolemaic Astronomy"



Ptolemaic Geocentric Astronomy
Ptolemy's geocentric astronomical system used four geometric devices, the deferent, epicycle, eccentric, and equant, to explain the observed motions of the planets.
ptolemy ptolemaic astronomy hipparchus equant epicycle

Ptolemy Astronomer Geographer
Ptolemy was an ancient Greek scholar who originated the Ptolemaic system in astronomy and made important contributions to geography and optics.
ptolemy claudius ptolemaeus ptolemaic astronomy ptolemy's geography latitude longitude

Ptolemy, Astronomy, & Almagest
Ptolemy's geocentric astronomical system placed Earth at the center of the universe and he was considered the ultimate authority in astronomy for about 1400 years.
ptolemy claudius ptolemaeus ptolemaic astronomy hipparchus equant


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