Published on
More than 2,000 years ago, Eratosthenes calculated the spherical size of the Earth with reasonable accuracy. …
More than 2,000 years ago, Eratosthenes calculated the spherical size of the Earth with reasonable accuracy.
Website: https://www.bighistoryproject.com/portal
Facebook: https://www.facebook.com/bighistoryproject
Twitter: https://twitter.com/BigHistoryPro