I need help!!! PLEASE! Help! ASAP!?

Cleomedes was a Greek astronomer who is known mainly for his book "On the Circular Motions of the Celestial Bodies". His birth and death dates are not known--historians have suggested that he wrote his work sometime between the mid-1st Century B.C. and 400 AD.

The book for which Cleomedes is known is a fairly basic astronomy textbook in two volumes. It has been criticized by most modern astronomers as being poorly written--it is valued primarily for preserving, apparently verbatim, much of Posidonius' writings on astronomy (none of Posidonius' books have survived to the modern day). Cleomedes is accurate in some of his remarks on lunar eclipses, especially his conjecture that the shadow on the Moon suggests a spherical Earth. He also states that the size of many stars may exceed that of the Sun.

This book is the original source for the well-known story of how Eratosthenes measured the Earth's circumference. Although the story is now believed by some to be purely legendary, many modern mathematicians and astronomers believe the description to be reasonable (and believe Eratosthenes' achievement to be one of the more impressive accomplishments of ancient astronomy).

Hope this helps.

Is there a math calculation in any of your searches? You didnt say, but it s implied that this is for a math class and since you have to go to the board. Look up his name with the words formula and see what happens. he had to some formula to prove his theory.

good luck

If you don't understand the words, use a dictionary--Webster's should be basic enough. You have the correct spelling, at least --that makes it easier.

See also :

"Cleomedes" : http://en.wikipedia.org/wiki/Cleomedes

"Cleomedes" : http://www-history.mcs.st-andrews.ac.uk/Biographie...

"Cleomedes (c. 1st century AD) on the celestial illusion" : http://www.perceptionweb.com/abstract.cgi?id=p2937