Early greek astronomy - PowerPoint PPT Presentation

Ancient Astronomy

Ancient Astronomy. Modern astronomy traces its roots to Mediterranean origins (Iraq, Greece, and Egypt) Ancient observers were aware of many phenomena that could be observed with the naked eye Accurate measurement of the length of the year (3000 B.C.) Correct explanation of eclipses (500 B.C.)

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Early Greek Astronomy And Ptolemy’s Almagest

Early Greek Astronomy And Ptolemy’s Almagest. Eratosthenes. Finds the size of the earth within 5%. Important Ratio. Distance to the Moon. If the sun is a point source. Trigonometry Tables in the Almagest. Not in terms of our trig functions sine, cosine, tangent, etc.

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475 views • 19 slides

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