What did the Almagest contain?
His first major astronomical work, the Almagest, was completed about 150 ce and contains reports of astronomical observations that Ptolemy had made over the preceding quarter of a century. The size and content of his subsequent literary production suggests that he lived until about 170 ce.
Who founded the geocentric theory and wrote the Almagest?
Claudius Ptolemy
The Almagest /ˈælmədʒɛst/ is a 2nd-century Greek-language mathematical and astronomical treatise on the apparent motions of the stars and planetary paths, written by Claudius Ptolemy ( c. AD 100 – c. 170).
Who is Ptolemy and what did he do?
Claudius Ptolemy was a Greek mathematician, astronomer and geographer. Much of medieval astronomy and geography were built on his ideas: his world map, published as part of his treatise Geography in the 2nd century, was the first to use longitudinal and latitudinal lines.
Who translated Almagest?
The two versions of al‐ḥajjāj and of Isḥāq revised by Thābit were received in Muslim Spain – they were both used by Gerard of Cremona for his translation of the Almagest into Latin (Toledo, ca. 1150–1180). Gerard’s Arabo–Latin version then remained the standard version of the Almagest in Europe until Renaissance times.
How old is Ptolemy?
| Ptolemy | |
|---|---|
| Κλαύδιος Πτολεμαῖος | |
| Ptolemy ‘the Alexandrian’, as depicted in a 16th-century engraving | |
| Born | c. 100 AD Egypt, Roman Empire |
| Died | c. 170 (aged 69–70) AD Alexandria, Egypt, Roman Empire |
What did the Eratosthenes do?
Eratosthenes, in full Eratosthenes of Cyrene, (born c. 276 bce, Cyrene, Libya—died c. 194 bce, Alexandria, Egypt), Greek scientific writer, astronomer, and poet, who made the first measurement of the size of Earth for which any details are known.
Which ancient book on astronomy is translated into Arabic?
In fact, the earliest translation of the Ptolemy Almagest was written into Arabic in the 9th century. This work is a summary of the most advanced knowledge dating from the Antiquity in astronomy, written by Claudius Ptolemy an Alexandrian geographer and astronomer.
Who discovered the 48 constellations?
Ptolemy
Ptolemy: 48 constellations described in his great work, The Almagest, in the 2nd century AD. These constellations originally came from a variety of sources including the myths and legends of Mesopotamia, Babylon, Egypt and Greece.
What is the Ptolemy theory?
The Ptolemaic system was a geocentric system that postulated that the apparently irregular paths of the Sun, Moon, and planets were actually a combination of several regular circular motions seen in perspective from a stationary Earth.
How did Ptolemy contribute to our understanding of the solar system?
Ptolemy synthesized Greek knowledge of the known Universe. His work enabled astronomers to make accurate predictions of planetary positions and solar and lunar eclipses, promoting acceptance of his view of the cosmos in the Byzantine and Islamic worlds and throughout Europe for more than 1400 years.
Did Cleopatra marry her dad?
Cleopatra was born in 69 BC – 68 BC. When her father Ptolemy XII died in 51 BC, Cleopatra became co-regent with her 10-year-old brother Ptolemy XIII. They were married, in keeping with Egyptian tradition.