Claudius Ptolemy CE 1.) He introduced the concepts of small circles on larger circles and points where the planets motion is not uniform. 2.) His theory of the universe formed the basis of our understanding of the motions of stars and planets for over a thousand years. 3.) He made contributions to astronomy, mathematics, geography, musical theory and optics. (1 jan 100 ano antes da era comum – 1 jun 93 ano antes da era comum)
Adicionado na linha do tempo:
Data:
1 jan 100 ano antes da era comum
1 jun 93 ano antes da era comum
~ 6 years and 7 months