Claudius Ptolemaeus Claudius Ptolemaeus

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Claudius Ptolemaeus Claudius Ptolemaeus

Bài gửi  ronaldjjjnooo on Sat Oct 23, 2010 8:05 pm

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Claudius Ptolemaeus (Greek: Κλαύδιος Πτολεμαῖος Klaúdios Ptolemaîos; c. AD 90 – c. 168), known in English as Ptolemy (pronounced /ˈtɒləmɪ/), was a Roman citizen of Egypt who wrote in Greek.[1] He was a mathematician, astronomer, geographer, astrologer and a poet of a single epigram in the Greek Anthology[2][3]. He lived in Egypt under Roman rule, and is believed to have been born in the town of Ptolemais Hermiou in the Thebaid. He died in Alexandria around AD 168.[4]

Ptolemy was the author of several scientific treatises, at least three of which were of continuing importance to later Islamic and European science. The first is the astronomical treatise now known as the Almagest (in Greek, Ἡ Μεγάλη Σύνταξις, "The Great Treatise", originally Μαθηματικὴ Σύνταξις, "Mathematical Treatise"). The second is the Geography, which is a thorough discussion of the geographic knowledge of the Greco-Roman world. The third is the astrological treatise known sometimes in Greek as the Apotelesmatika (Ἀποτελεσματικά), more commonly in Greek as the Tetrabiblos (Τετράβιβλος "Four books"), and in Latin as the Quadripartitum (or four books) in which he attempted to adapt horoscopic astrology to the Aristotelian natural philosophy of his day.


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