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Hang up your favorite map with this Eratosthenes Magnet set!

Who is Eratosthenes?

He was a Greek mathematician, geographer, poet, athlete, astronomer, and music theorist.
He was the first person to use the word "geography" and invented the discipline of geography as we understand it. He invented a system of latitude and longitude. He was the first person to calculate the circumference of the earth by using a measuring system using stades, or the length of stadiums during that time period (with remarkable accuracy). He was the first to calculate the tilt of the Earth's axis (also with remarkable accuracy). He may also have accurately calculated the distance from the earth to the sun and invented the leap day. He also created the first map of the world incorporating parallels and meridians within his cartographic depictions based on the available geographical knowledge of the era. In addition, Eratosthenes was the founder of scientific chronology; he endeavored to fix the dates of the chief literary and political events from the conquest of Troy.

-wikipedia

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Check out Carl Sagan talking about Eratosthenes....

http://www.youtube.com/watch?v=0JHEqBLG650

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Eratosthenes Magnet set

US$6.00
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Overview