Cosmology Philosophers
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12 Terms
Egyptians
Pyramids aligned with directions/stars, earth-centered
Thales
Universal laws (Earth, Air, Fire, Water)
Pythagoras
Earth is round, geocentric
Aristotle
Earth is round, geocentric, added Ether
Ptolmey
geocentric with epicycles, eclipses, 80+ circles
Erasthenes
Measured earth’s circumference using sun’s shadow between two cities
Copernicus
Heleiocentric model, circular orbits, simplified retrograde motion
Brahe
Accurate measurements of planetary motion, hybrid model, no parallax
Kepler
3 Laws, elliptical orbits, equal areas equal times, p2=a3, heliocentric
Galilei
Telescope, phases of venus, heliocentrism
Newton
Universal gravitation, obj in motion stays in motion, F=ma, every action equal opposite reaction
Einstein
General relativity (curving light)
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Flashcards (27)