who discovered that the earth is round and when?
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Eratosthenes
Determining the size of the Earth by Eratosthenes
Under the assumption that the Sun is very far away, the ancient Greek geographer Eratosthenes performed an experiment using the differences in the observed angle of the Sun from two different locations to calculate the circumference of the Earth.
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Eratosthenes......
Determining the size of the Earth by Eratosthenes.......
Under the assumption that the Sun is very far away, the ancient Greek geographer Eratosthenes performed an experiment using the differences in the observed angle of the Sun from two different locations to calculate the circumference of the Earth.
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