http://www-groups.dcs.st-and.ac.uk/~history/Biographies/Ptolemy.html
A biography about Ptolemy, what he did, what he discovered (formulas and equatinos) and his background information about his life.
Showing posts with label Ptolemy biography. Show all posts
Showing posts with label Ptolemy biography. Show all posts
Monday, February 23, 2009
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