Search results
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.
Claudius Ptolemaeus, known as Ptolemy, was an eminent astronomer, mathematician, and geographer who lived in the 2nd century ad. He was of Greek descent but worked mostly in Alexandria, Egypt. In several fields his writings represent the greatest achievement of Greco-Roman science, particularly his Earth-centered model of the universe.
Ptolemy was the world’s foremost expert on astrology, which in ancient times was an extremely important and fundamental way of understanding the fate and workings of all humanity. He wrote a series of four books called the Tetrabiblos , which for centuries were the central “instruction manuals” for applying and understanding astrology.
Sep 24, 2022 · Ptolemy’s world map extends 180 degrees West-East and 90 degrees South-North, encompassing one-quarter of the earth’s surface. Ptolemy used this projection to position all 8, 000 locations known to the Romans, from the Fortunate Islands (the Canary Islands) on the Prime Meridian, to China and Southeast Asia, on the eastern edge of the world.
Below is the article summary. For the full article, see Ptolemy I Soter . Ptolemy I Soter , (born 367/366, Macedonia—died 283/282 bc, Egypt), Ruler of Egypt (323–285) and founder of the Ptolemaic dynasty. A Macedonian general of Alexander the Great, he and the other generals divided the empire after Alexander’s death, Ptolemy becoming ...
Ptolemy I Soter (born 367/366 bc, Macedonia—died 283/282, Egypt) was a Macedonian general of Alexander the Great, who became ruler of Egypt ( 323–285 bc) and founder of the Ptolemaic dynasty, which reigned longer than any other dynasty established on the soil of the Alexandrian empire and only succumbed to the Romans in 30 bc.
Mar 14, 2023 · A text thought to be lost by the astronomer Claudius Ptolemy (2nd century BC) has been discovered thanks to multispectral imaging, then deciphered and interpreted by two researchers from the Léon Robin Center (Sorbonne University/CNRS), and a researcher from New York University (NYU). This treatise is the oldest known text devoted entirely to the description of a scientific instrument. Their ...
