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ptolemy

The great astronomer!
by

kleeborp borpklee

on 24 June 2010

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Transcript of ptolemy

Ptolemy Born about 85 in Egypt Died about 165 in Alexandria, Egypt Ptolemy is famous because of his series of books called the Almagest. The Almagest is about the rotations of the sun, moon, and planets. The series is made up of 13 books,
and contained an elaborate starchart as well. The Almagest contains 48 constelations, and at least 80 epicicles for the 5 planets they could see at the time. He only wrote about the five planets "Mercury, Venus, mars, Jupiter, Saturn, the sun, and the moon. As those were the only planets they could see with the naked eye. He also beleived that the earth was the centre of the universe and the other planets rotated around it and not the sun. But around 1609 the theory in the books is proven wrong by Galileo making a high quality telescope that could zoom 7-8x closer to objects. He began to find new planets and stars,
but the main thing he found was that
Venus over a period of time had a shadow on it that began to move in a crecent to circle pattern. This could only mean that the planets didn't orbit around the Earth, they orbit around the Sun! http://ptolemy.eecs.berkeley.edu/
http://en.wikipedia.org/wiki/Ptolemy
http://www.gap-system.org/~history/Biographies/Ptolemy.html
http://www-history.mcs.st-and.ac.uk/Biographies/Ptolemy.html Even though his work is inacurate now
he is still a very famous person
for the work he did before. Teachers/Education Little is known about Ptolemys life as a student, but it is rumored that he was taught by Theon of Smyrna, because he has used some observations made by him based off astronomical topics such as conjunctions, eclipses, occultations and transits. There is also reason to believe that Ptolemy was also taught by Syrus, because most of his work is dedicated to him. But almost nothing is known about Syrus so I could not find any info on who he is. Next to nothing has been found about Ptolemys life during education or after it. Conclusion Though throughout Ptolemys life he has made many innacurate reports, he is still remembered for his amazing detail for the time on space, and showing other astronomers like himself that there are more planets and stars out their than than anyone ever believed possible! A Picture of Theon
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