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Last viewed: 3 days ago Uploaded:
10 Oct 2017 (9 years ago)
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Shared: 12 May 2022
Video Description (from Youtube)
How the ancient Greeks understood the universe; what they got right and what they got wrong. How Aristotle understood the Earth was round by observing lunar eclipses; how Aristarchus of Samos used
these results to work out the relative sizes of Earth, the Sun, and Moon, how Eratosthenes of Cyrene measured Earth's circumference, and how Hipparchus of Nicaea determined created the first catalog of stars and discovered Earth's 26,000 year axial precession, Finally, we take a look at Claudius Ptolemy's collection of works in the Almagest, and how he came up with a system of epicycles to explain planets' retrograde motion.
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Search Results on 'Aristotle (322 BC) Astronomy: 7 Planets revolved around the Earth including Sun and Moon'
Who was Aristotle? Aristotle (384-322 BC) was a Greek philosopher during the Classical period in Ancient Greece. His writings cover many subjects including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theatre, music, rhetoric, psychology, linguistics, economics, politics, meteorology
geology, and government.
What is Astronomy? Astronomy is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets.
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