AstroPhysics18 - on the summer solstice. Measurements:...

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Eratosthenes measures the size of the Earth (c. 240 BC) Calculate circumference of Earth: 7/360 (circum. Earth) = 5000 stadia circum. Earth = 5000 360/7 stadia ≈ 250,000 stadia Compared latitude of the Sun between two Egyptian cities
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Unformatted text preview: on the summer solstice. Measurements: Syene to Alexandria distance 5000 stadia angle = 7 Compare to modern value ( 40,100 km): Greek stadium 1/6 km 250,000 stadia 42,000 km...
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This note was uploaded on 09/28/2011 for the course PHYSICS 20 taught by Professor Mubarek during the Fall '11 term at UC Riverside.

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AstroPhysics18 - on the summer solstice. Measurements:...

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