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The tessarakonteres, 1858 illustration. Tessarakonteres (Greek: τεσσαρακοντήρης, "forty-rowed"), or simply "forty", was a very large catamaran galley reportedly built in the Hellenistic period by Ptolemy IV Philopator of Egypt.
The work's enduring significance is attributed to several factors: Ptolemy's reputation as one of the greatest philosophers and scientists of the ancient world, [13] the text's astrological importance as one of the oldest complete manuals on that subject, [14] and the unprecedented order and quality of Ptolemy's astrological explanations. [15]
Ptolemy IV was the second child and eldest son of Ptolemy III and his wife Berenice II. He was born about two years after his father's accession to the throne of Egypt. Ptolemy IV had an older sister, Arsinoe III, and three younger brothers, Lysimachus (name uncertain), Alexander and Magas, all born in the 240s BC.
Ptolemy I and other early rulers of the dynasty were not married to their relatives, the childless marriage of siblings Ptolemy II and Arsinoe II [22] being an exception. The first child-producing incestuous marriage in the Ptolemaic dynasty was that of Ptolemy IV and Arsinoe III , who were succeeded as co-pharaohs by their son Ptolemy V , born ...
An edition in Latin of the Almagestum in 1515. The Almagest (/ ˈ æ l m ə dʒ ɛ s t / AL-mə-jest) is a 2nd-century mathematical and astronomical treatise on the apparent motions of the stars and planetary paths, written by Claudius Ptolemy (c. AD 100 – c. 170) in Koine Greek. [1]
Golden ring depicting Ptolemy VI wearing a Greek diadem. Ptolemy VI was the eldest son of Ptolemy V and Cleopatra I.The early reign of Ptolemy V was dominated by the Fifth Syrian War (204–198 BC) against the Seleucid king Antiochus III, who completely defeated the Ptolemaic forces, annexed Coele-Syria and Judaea to his empire, and reduced Egypt to a subordinate position. [2]
Ptolemy XIV Philopator (Ancient Greek: Πτολεμαῖος Φιλοπάτωρ, [1] Ptolemaios; c. 59 – 44 BC) was a Pharaoh of the Ptolemaic Kingdom of Egypt, who reigned from 47 until his death in 44 BC.
A 16th-century engraving of Ptolemy. Ptolemy's Optics is a 2nd-century book on geometrical optics, dealing with reflection, refraction, and colour. The book was most likely written late in Ptolemy's life, after the Almagest, during the 160s. [1] The work is of great importance in the early history of optics. The Greek text has been lost completely.