The complete name of Ptolemy is a mixture of Greek word and Roman word. Claudius is a Roman word while on the other hand the Ptolemy is a Greek word. ... It is also believed by many historian that, Ptolemy was fall away from a Greek family and he was the citizen of Rome. ... Ptolemy played a vital role in the field of mathematics and in the history of mathematics he is considered as one of the best mathematician in the world. ... Related to the celestial bodies he proposed a mathematical solution and he also suggests the trigometrical methods in mathematics. ...

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• Has Bibliography

Many of Copernicus" ideas of astronomy, mainly his heliocentric view, which was actually proposed first by the Greek philosopher Aristarchus, were already made known in literature. ... Galileo used experimentation which could be reproduced and mathematics to support his claims. ...

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