What was Ptolemy s theory

The outer planets, like uranus and neptune, are missing from both charts because they had not been discovered at the time.Ptolemy's principles of astrology theorised that the planets move around a circular path called the epicycle.There is no evidence that the earth was in the center of the universe.This fact can be used to derive the trigonometry addition formulas.In the last book, he deals with a theory of refraction (the change in direction of light and other energy waves when they pass obliquely from a medium of one density into a medium of different density), and he discusses the refraction.

Sight and hearing themselves generated two kinds of knowledge.Ptolemy argued that harmony was a kind of principle of activity, or form, reliant on the two highest senses, sight and hearing.Geocentric refers to the belief that the earth is the center of the universe.\hspace {1.5cm} contents proof applications converse ptolemy's inequality proofEarth, in the center of the universe, did not move at all.

An astronomer in ancient times.Under its greek rulers, alexandria cultivated a famous library that attracted many scholars from greece, and its school for astronomers received generous patronage.Ptolemy's theory of the solar system placed the earth at the center with each planet on an orbit around it and the stars on a celestial sphere.Furthermore, the special case of the quadrilateral being a rectangle gives the pythagorean theorem.What is ptolemy best known for?

Ptolemy was an astronomer and mathematician.