Eratosthenes — "One must combine practical observation with theoretical understanding."
One must combine practical observation with theoretical understanding.
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More from Eratosthenes
"The distances between cities can be used to understand the Earth's curvature."
"The Earth is spherical, not flat."
"I strive for accuracy in all my measurements."
"He who knows the positions of the stars knows the circumference of the Earth."
"I have found a way to measure the size of the Earth with considerable accuracy."
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