University of California, San Diego
Physics 11 - Survey of Physics
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Physics 11 - Lecture #1
25 September 2003
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Because Copernicus used perfect circular motion, his
heliocentric model
was as complex as the Ptolemaic model, though it was superior in its
agreement with observation.
![](../images/doodads/spect_bar.gif)
Ptolemy's Model
Lecture #1 Page 5
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Gene Smith
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modified: Tue., 19 Sept. 2003