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