Erastothenes

How Did Eratosthenes Measure the Earth’s Circumference?

Eratosthenes of Cyrene was a learned man who rose to the position of chief librarian at the Library of Alexandria. His work is comparable to what is now known as geography study, and he introduced some of the terminologies that are still used today. But did you know that he measured the earth’s circumference? In […]

How Did Eratosthenes Measure the Earth’s Circumference? Read More »