Encara no tenim significats per a "calculated the circumference".
1A modern illustration shows how Eratosthenes actually calculated the circumference of the Earth.
2He calculated the circumference of the world and the latitude and longitude of terrestrial positions.
3Posidonius calculated the circumference of the earth to be two hundred and forty thousand stadia, by a different method from Eratosthenes.
4He calculated the circumference of the world and the latitude and longitude of terrestrial positions, which was the beginning of the study of geography.
5Size of the Earth The story is (don't know if it is true) that Eratosthenes first measured and calculated the circumference of the Earth.
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