About this design
I first heard of Eratosthenes through Carl Sagan in his video "Cosmos" and was amazed to learn he calculated the circumference of the Earth & the degree of tilt on the Earths axis. This in itself is remarkable, but what amazed me was the fact that he lived c. 276 BC - c. 195 BC... over two thousand years ago!!
He may also have accurately calculated the distance from the Earth to the Sun and invented the leap day.
He also created a map of the world based on the available geographical knowledge of the era. Eratosthenes was also the founder of scientific chronology and was the third chief librarian of the Great Library of Alexandria.
Amazing to think he discovered all this, yet for hundred's of years afterwards many people still believed the world was flat!






























































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