How Eratosthenes measured the earth. Part 1: the discovery of the earth's shape.
Before 400 BCE, everyone was a flat-earther. Afterwards, it gets hard to find people who weren't aware that the earth is round.
A look at early Greek thought on the shape of the cosmos, the earth's location, and the angle of the ecliptic, leading up to the first estimate of the earth's size in Aristotle.
(Reading time: 18 minutes)
https://kiwihellenist.blogspot.com/2023/04/eratosthenes-1.html
#ancientscience #eratosthenes #geography #ancientgreece
@KiwiHellenist Is "...failed theories are still part of the process of dis." missing a "-covery"?