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Tag: #ancientscience · 1 posts
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Posted Dec 2
🌍 Over 2,200 years ago, the Greek mathematician Eratosthenes calculated Earth’s circumference using only a stick and his brain — and he was almost exactly right! 📏 By observing shadows in two cities, he calculated the Earth was about 40,000 km around. Ancient genius at its finest! [Source] @googlefactss#AncientGreece#ScienceHistory#Eratosthenes#EarthCircumference#AncientScience
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