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- DictionaryPtol·e·my/ˈtäləmē/
- 1. Greek astronomer and geographer of the 2nd century ad. His teachings had enormous influence on medieval thought, the geocentric view of the cosmos being adopted as Christian doctrine until the late Renaissance. His Geography was also a standard work for centuries, despite its inaccuracies.
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Ptolemy definition: Hellenistic mathematician, astronomer, and geographer in Alexandria.. See examples of PTOLEMY used in a sentence.
Ptolemy's theory of vision consisted of rays (or flux) coming from the eye forming a cone, the vertex being within the eye, and the base defining the visual field. The rays were sensitive, and conveyed information back to the observer's intellect about the distance and orientation of surfaces.
May 21, 2024 · 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. Search Britannica Click here to search
noun. Alexandrian astronomer (of the 2nd century) who proposed a geocentric system of astronomy that was undisputed until the late Renaissance. synonyms: Claudius Ptolemaeus. see more. noun. an ancient dynasty of Macedonian kings who ruled Egypt from 323 BC to 30 BC; founded by Ptolemy I and ended with Cleopatra. synonyms: Ptolemaic dynasty.
Jun 14, 2024 · Ptolemaic system, mathematical model of the universe formulated by the Alexandrian astronomer and mathematician Ptolemy about 150 CE. The Ptolemaic system is a geocentric cosmology that assumes Earth is stationary and at the centre of the universe.
Ptolemy. A sixteenth-century depiction of Ptolemy. This article is about Ptolemy the astronomer, mathematician, and geographer. He is not to be confused with Ptolemy I Soter, a Macedonian general who became king of Egypt in 305 B.C.E., or other Egyptian rulers in the Ptolemaic dynasty.
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...
