Eratosthenes calculates the Earth's circumference using a stick - June 19th, 240 BC

Eratosthenes calculates the Earth's circumference using a stick - June 19th, 240 BC

Author: iHeartPodcasts and HowStuffWorks June 19, 2024 Duration: 8:21

On this day in 240 BC, ancient Greek scholar Eratosthenes estimated the circumference of the Earth.

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