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The fact that Ptolemy did not represent an eastern coast of Asia made it admissible for Behaim to extend that continent far to the east. Behaim’s globe placed Marco Polo’s Mangi and Cathay east of Ptolemy’s 180th meridian, and the Great Khan’s capital, Cambaluc ( Beijing ), on the 41st parallel of latitude at approximately 233 degrees East.
A History of the Jews and Judaism in the Second Temple Period. Volume 2 – The Coming of the Greeks: The Early Hellenistic Period (335 – 175 BC). T&T Clark. ISBN 978-0-567-03396-3. Grainger, John D. (2010). The Syrian Wars. Brill. pp. 281– 328. ISBN 9789004180505. Hölbl, Günther (2000). A History of the Ptolemaic Empire. Translated by ...
The Earth and Moon are much closer to being a binary planet; the center of mass around which they both rotate is still inside the Earth, but is about 4,624 km (2,873 miles) or 72.6% of the Earth's radius away from the centre of the Earth (thus closer to the surface than the center).
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]
1.10 Ptolemy (c. 150) 1.11 Tabula ... World maps assuming a spherical Earth first appear in the Hellenistic period. ... Symbolism, Time, and Space in Medieval World ...
Copernicus accepted existence of the sphere of the fixed stars, and (more ambiguously) that of the Primum Mobile, [6] as too (initially) did Galileo [7] – though he would later challenge its necessity in a heliocentric system. [8] Francis Bacon was as sceptical of the Primum Mobile as he was of the rotation of the earth. [9]
Known affectionately to scientists as the "boring billion," there was a seemingly endless period in the world's history when the length of a day stayed put. The time when a day on Earth was just ...
For the outer planets, the angle between the center of the epicycle and the planet was the same as the angle between the Earth and the Sun. Ptolemy did not predict the relative sizes of the planetary deferents in the Almagest. All of his calculations were done with respect to a normalized deferent, considering a single case at a time.