PPT Slide
Ancient & Medieval Philosophy -- David L. Rouse
- Ptolemy was the astronomer who devised the geocentric system which dominated western thought for 1400 years.
- His major work, composed in Greek, was entitled The Mathematical Compilation. This was later changed to The Great Compilation, which was translated into Arabic as al-majisti, and then into Latin as Almagest.
- His major accomplishment was his theory of planetary motion based upon epicycles.