What was Claudius Ptolemy known for?

Geocentric model
Ptolemy’s world mapPtolemy’s theorem
Ptolemy/Known for

What was the theory of Claudius Ptolemy?

In Ptolemy’s geocentric model of the universe, the Sun, the Moon, and each planet orbit a stationary Earth. For the Greeks, heavenly bodies must move in the most perfect possible fashion—hence, in perfect circles.

When and where did Ptolemy live?

Claudius Ptolemy (about 85–165 CE) lived in Alexandria, Egypt, a city established by Alexander the Great some 400 years before Ptolemy’s birth. Under its Greek rulers, Alexandria cultivated a famous library that attracted many scholars from Greece, and its school for astronomers received generous patronage.

What did Ptolemy do in his spare time?

While Ptolemy is most frequently associated with geography and cartography, he also wrote important works in a number of other fields including astronomy, astrology, music and optics.

What did Ptolemy contribute to Greco Roman science?

In several fields his writings represent the culminating achievement of Greco-Roman science, particularly his geocentric (Earth-centred) model of the universe now known as the Ptolemaic system. Ptolemy’s theory of the solar system.Encyclopædia Britannica, Inc.

How did Ptolemy contribute to the study of optics?

The extent to which Ptolemy subjected visual perception to empirical analysis is remarkable when contrasted with other Greek writers on optics. For example, Hero of Alexandria (mid-1st century ce) asserted, purely for philosophical reasons, that an object and its mirror image must make equal angles to a mirror.

When did Ptolemy create the map of Asia?

A medieval recreation of * Ptolemy’s * map of Asia, including India; * a larger image of the map * DESCRIPTION: The early period of cartography, from 4,000 B.C. to A.D