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  1. Sep 14, 2024 · Claudius Ptolemaeus. Born: c. 100 ce. Died: c. 170 ce. Notable Works: “Almagest” “Guide to Geography” “Hypotheseis ton planomenon” “Optica” Subjects Of Study: Ptolemaic system. calendar. light. projection. refraction. On the Web: Encyclopedia Romana - Ptolemy: the Geography (Sep. 14, 2024) Top Questions. What is Ptolemy best known for?

  2. Sep 7, 2023 · Claudius Ptolemy (c. 100 to c. 170 CE) was an Alexandrian mathematician, astronomer, and geographer. His works survived antiquity and the Middle Ages intact...

  3. Summary. Ptolemy was the most influential of Greek astronomers and geographers of his time. He propounded the geocentric theory of the solar system that prevailed for 1400 years. View six larger pictures.

  4. Claudius Ptolemy was a 2nd century Greek mathematician, astronomer and geographer famous for his controversial geocentric theory of the universe, which would form the basis of our...

  5. Nov 21, 2023 · Claudius Ptolemaus, more commonly known as Ptolemy, was a Greco-Egyptian polymath who made major contributions to the fields of astronomy, geography, mathematics, and more. As with many...

  6. His first name, Claudius, is a marker of his Roman connection. He was either born into or granted Roman citizenship during the reign of the patrician family of Claudius. The Emperors Claudius and Nero ruled during the life of Ptolemy.

  7. 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.