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18 set 199 ano antes da era comum - Eratosthenes calculates the Earth's circumference

Descrição:

He calculated it to be 25,000 miles, which is very close to the real circumference.

Adicionado na linha do tempo:

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9 nov 2017

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Data:

18 set 199 ano antes da era comum

Agora

~ 2227 years ago

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