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  • Ptolemy | Accomplishments, Biography, Facts | Britannica
    Ptolemy was an astronomer, mathematician, and geographer who lived during the 2nd century CE He is known for his geocentric (Earth-centred) model of the universe
  • Ptolemy I Soter - Wikipedia
    Ptolemy was one of Alexander's most trusted companions and military officers After the death of Alexander in 323 BC, Ptolemy retrieved his body as it was en route to be buried in Macedon, placing it in Memphis instead, where it was later moved to Alexandria in a new tomb
  • Claudius Ptolemy - World History Encyclopedia
    Claudius Ptolemy (c 100 to c 170 CE) was an Alexandrian mathematician, astronomer, and geographer
  • 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 - Famous Mathematicians
    Ptolemy can be described as a polymath because his studies ranged across an astonishing array of disciplines, from astronomy and geography, to mathematics, philosophy, literature and poetry The best indications place Ptolemy’s birth at about 90 A D in Alexandria, Egypt
  • Claudius Ptolemaeus - Ptolemy Project
    Ptolemy was an astronomer, mathemetician and geographer in the second century A D He codified the Greek geocentric view of the universe, and rationalized the apparent retrograde motion of the planets using epicycles
  • Claudius Ptolemy: The Famed Alexandrian Mathematician and Astronomer
    Claudius Ptolemy (c 100 – c 170 AD) was a towering figure in the ancient world, renowned for his extensive contributions to various fields of science His life and works left an indelible mark on mathematics, astronomy, astrology, geography, and music theory
  • 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")
  • Ptolemy I Biography - life, family, childhood, children, death, history . . .
    Ptolemy I (c 366–283 B C E ) was a Macedonian general under Alexander the Great (356–323 B C E ) and founder of the Ptolemaic dynasty of Egypt, a family of fifteen kings—all of whom were named Ptolemy—who reigned over Egypt for more than three hundred years





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