Ptolemy I Soter - Wikipedia Ptolemy was king and pharaoh of Ptolemaic Egypt from 305 304 BC to his death in 282 BC, [note 1][3] and his descendants continued to rule Egypt until 30 BC During their rule, Egypt became a thriving bastion of Hellenistic civilization and Alexandria a great seat of Greek culture
Claudius Ptolemy - World History Encyclopedia Ptolemy was a keen astronomer, although he was reliant on the naked eye since the telescope was not invented until the early 17th century What Ptolemy did have access to were masses of astronomical observations taken by ancient Babylonian scientists from the 8th to the 3rd centuries BCE
Claudius Ptolemy - Biography, Facts and Pictures Claudius Ptolemy wrote the Almagest, the work that defined astronomy for over 1,000 years The Almagest included a catalogue of over a thousand stars, recording their positions, constellations, and relative brightnesses; and a mathematical model predicting the movements of the planets
Ptolemy - New World Encyclopedia Ptolemy, or in Latin Claudius Ptolemaeus (ca 90 – ca 168 C E ), was a mathematician, philosopher, geographer, map maker, astronomer, theologian, and astrologer who lived in Alexandria, Egypt
Ptolemy - Wikipedia Like Aristotle before him, Ptolemy classifies mathematics as a type of theoretical philosophy; however, Ptolemy believes mathematics to be superior to theology or metaphysics because the latter are conjectural while only the former can secure certain knowledge
Ptolemy - University of Oregon Ptolemy, Latin in full Claudius Ptolemaeus (fl AD 127-145, Alexandria), ancient astronomer, geographer, and mathematician who considered the Earth the center of the universe (the "Ptolemaic system")