Eratosthenes — "I have found a way to measure the size of the Earth with considerable accuracy."
I have found a way to measure the size of the Earth with considerable accuracy.
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More from Eratosthenes
"The universe is a grand design, filled with mathematical harmonies."
"Alexandria is approximately 5,000 stadia north of Syene."
"One must observe the world carefully to understand its secrets."
"Syene lies directly under the summer solstice sun."
"The sun casts no shadow in Syene at the summer solstice."
Details
Describing his method using shadows and distances between cities.
Date: c. 240 BCE
Nature & WorldVerification
Unverifiable
Found in 1 providers: grok
1 source checked