Who first declared the world to be round?

mk2norwich

I thought Columbus, but this site suggests that navigators of ancient times had already come to that conclusion: www-istp.gsfc.nasa.gov/stargaze/Scolumb.htm Jun 14 02, 5:20 AM

Gnomon

Eratoshenes of Cyrene (276 BC - 194 BC), a Greek philosopher, not only knew that the world was round, but he measured the circumference of it in about the third century BC. He did this by measuring the lengths of shadows in two places far distant from each other, based on the assumption that the sun was very far away. Jun 14 02, 7:11 AM

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Who was the first person to declare that the Earth was round? Who was the first black player to lead his league in round trippers? Who was the first person to state, with reason, that the Earth is round? What was the evidence to prove this? Who proved the Earth is round?

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