Eratosthenes
Eratosthenes
Mar 3, 2022
worldhistory.org
Who is Eratosthenes? Life, Biography & Discoveries of Eratosthenes
Who is Eratosthenes? Life, Biography & Discoveries of Eratos…
Mar 9, 2011
planetfacts.org
Over 2,000 years ago, Eratosthenes proved the Earth was round and measured it using only shadows and basic math. On the summer solstice, he noticed that while objects cast shadows in Alexandria, they didn’t in Syene. That tiny clue unlocked the secret of Earth’s size: 40,000 km, nearly perfect by modern standards. His work survived despite the tragic loss of the Library of Alexandria, while Ptolemy’s later miscalculations led Columbus astray. | Lost in History
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Eratosthenes (276-195 BC)
Eratosthenes (276-195 BC)
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Biography of Eratosthenes, Greek Mathematician and Geographer
Biography of Eratosthenes, Greek Mathematician and Geographer
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thoughtco.com
24M views · 8.1K reactions | This incredibly accurate science experiment was centuries ahead of its time. | Business Insider | Facebook
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