Eratosthenes - Wikipedia - Deepstash
Eratosthenes - Wikipedia

Eratosthenes - Wikipedia

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Who has calculated the circumference of the Earth?

Who has calculated the circumference of the Earth?

The first person to determine the size of Earth was Eratosthenes of Cyrene, who produced a surprisingly good measurement using a simple scheme that combined geometrical calculations with physical observations and without leaving Egypt. 

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Eratosthenes

Eratosthenes of Cyrene was a Greek polymath: a mathematician, geographer, poet, astronomer, and music theorist. 

He was a man of learning, becoming the chief librarian at the Library of Alexandria.

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