Photo Researchers ftp March 2011
EN_00958297_0425
Claudius Ptolemy (AD c100-170), Greek-Egyptian astronomer, geographer and mathematician at his observatory in Alexandria, Egypt. Among the instruments seen here are Ptolemy's rulers (lower center) and a copper disc (far right), which he used to demonstrate the law of reflection. At this observatory Ptolemy made the observations that supported Earth-center models of solar and planetary motion. This view dominated astronomical thinking until the mid 16th century. Engraving from Vies des Savants Illustres (1877).
2011-03-24
EAST NEWS
Science Source
New York Public Library Picture
BQ4630
1,61MB
32cm x 24cm przy 300dpi
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