合同
发表于 2025-3-26 22:42:43
,The Astronomy of Āryabhaṭa,ronomical treatises were written over the centuries, but the work of one astronomer is particularly interesting: Āryabha.a of Kusumapura, who was born in . 476. Although he was later than Ptolemy, his planetary theories, based on regular circular motion, seem to have developed out of pre-Ptolemaic G
长处
发表于 2025-3-27 02:14:51
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干涉
发表于 2025-3-27 07:01:30
The Mayas ,y. We do not know for sure what they thought of the shape of the earth, but the later Aztecs thought that the crust of the earth was the back of a huge alligator, and the Mayas may well have believed the same.
Substance-Abuse
发表于 2025-3-27 12:37:20
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幸福愉悦感
发表于 2025-3-27 16:18:16
Book 1994of modern distractions people had more time-and more mental energy-to devote to stargazing than we have. Megaliths, Chinese oracle bones, Babylonian clay tablets, and Mayan glyphs all yield evi dence of early peoples‘ interest in the skies. To understand early astronomy we need to be familiar with
胆大
发表于 2025-3-27 21:06:01
Arabic Astronomy,Saracenic” to describe this culture, but historians of science seem to prefer “Arabic.” Arabic astronomy is a substantial and specialized subject; here I can deal only with some of the more interesting highlights.
酷热
发表于 2025-3-27 23:40:57
The European Renaissance,planet. But this is misleading, if not actually false: Copernicus did not place the sun . the center but . the center of the various orbits, and the earth does not move quite like the other planets (it does not have an epicycle (see page 208)).
避开
发表于 2025-3-28 02:33:39
0172-6234 invention of modern distractions people had more time-and more mental energy-to devote to stargazing than we have. Megaliths, Chinese oracle bones, Babylonian clay tablets, and Mayan glyphs all yield evi dence of early peoples‘ interest in the skies. To understand early astronomy we need to be fami
诗集
发表于 2025-3-28 08:05:41
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Exhilarate
发表于 2025-3-28 12:54:31
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