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2 days ago · Ptolemy made contributions to astronomy, mathematics, geography, musical theory, and optics. He compiled a star catalog and the earliest surviving table of a trigonometric function and established mathematically that an object and its mirror image must make equal angles to a mirror.
Sep 7, 2023 · 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.
- Mark Cartwright
- What is Claudius Ptolemy best known for?Claudius Ptolemy is best known for being a 2nd-century Alexandrian astronomer who created a model of the universe with Earth as its centre. Ptolemy...
- What is Claudius Ptolemy's theory?Claudius Ptolemy's theory of the universe is that Earth is at the centre while the other planets and the Sun move around it. These heavenly bodies...
- Was Claudius Ptolemy's world map accurate?Claudius Ptolemy's world map was relatively accurate for the Mediterranean region, but because nobody had been there, other parts of the world were...
By Cynthia Stokes Brown. The Earth was the center of the Universe according to Claudius Ptolemy, whose view of the cosmos persisted for 1400 years until it was overturned — with controversy — by findings from Copernicus, Galileo, and Newton. An Astronomer in Ancient Times.
AD100 - AD170 (aged 69-70) Controversial astronomer who reinforced the idea that Earth was at the centre of the universe. Wikipedia Commons. Claudius Ptolemy was a Greek mathematician,...
Jul 3, 2019 · He systematically charted the sky to help predict and explain the motions of the planets and stars. He was a scientist and philosopher who lived in Alexandria, Egypt nearly 2,000 years ago. Not only was he an astronomer, but he also studied geography and used what he learned to make detailed maps of the known world.
The life of Ptolemy, ancient astronomer - BBC Sky at Night Magazine. Claudius Ptolemaeus (circa AD 100–170), better known as Ptolemy, was a Greco-Roman astronomer, mathematician, geographer and cartographer.
