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Eratosthenes Measured Earth To Compute Its Size
The article recounts how Eratosthenes used solar angles at Syene and Alexandria to estimate Earth's circumference at about 28,750 miles, via geometry and the distance between Syene and Alexandria. It also notes his ancient method and mentions related notes and unconnected public notices.
MENTIONED IN THIS ARTICLE
Thisman
Eratosthenes
Egypt
Svene
Alexander
Syene
Alexandria
Earth