Claudius+Ptolemy

media type="custom" key="4840435" By: Sarah, Jordan, Mike, and Stan (Claudius Ptolemy)


__ THEORY'S __ Ptolemy's main theory about the universe was... media type="file" key="Movie 1.mov" width="255" height="255"media type="file" key="Movie 87.mov" width="255" height="255" • His theory was called the Ptolemaic Theory and was believed for about 1,500 years. • The first person to make accusations to his theories was Tycho Brahe, another famous astronomer __LIFE AND ASTRONOMY WORK__ Very little is known about Ptolemy's personal life, but we do know...  • Born in Greece and descended from a Greek family • Claudius was not only an astronomer, but also a mathematician and a geographer •He lived approximately 87-150 A.D. which is about 63 years • His first observation was exactly on the 26th of March 127 A.D. and his last was on Feb. 2nd 141 A.D. • Written on subjects such as, conjunctions, eclipses, occultations, and transits• Was suspected to be taught by Theon Of Smyrna • Made observations about the length of a day • He created a treatise in 13 books called, //Almagest and it explains Ptolemy's theories on such topics as the sun, moon, eclipses, fixed stars, and his star catalogue Some pages of the Almagest →    // media type="custom" key="4872295" width="160" height="160" __WHAT HE DID AS A MATHEMATICIAN__ • Wrote and created the book, //Almagest// (also known as a mathematical syntaxis and when translated from Greek to English means //The Mathematical Compilation//) which also included a a thirteen book explanation of astronomy that included a star catalog with 48 constellations. • Also, has written the //Analemma// which tells you how to construct a sundial and //Planisphaerium// which told about stereographic projection.

__WHAT HE DID AS A GEOGRAPHER__ • He was the first person to use latitude and longitude to identify places. • In his theory's he had Asia extending to far East which may have been a factor in Columbus's sail to the West. • Wrote //Optics// explaining color, reflection, refraction, and mirrors of various shapes.

__FAMOUS QUOTE BY CLAUDIUS PTOLEMY__

" I know that I am mortal by nature, and ephemeral; but when I trace at my pleasure the windings to and fro of the heavenly bodies I no longer touch the earth with my feet: I stand in the presence of Zeus himself and take my fill of ambrosia."

Claudius Ptolemy

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Extra Videos to Check Out media type="custom" key="4862489"

Astronomy Games and Cool Links to Check Out ** http://www.kidsastronomy.com/space_size.htm @http://www.kidsastronomy.com/deep_space.htm **