What is Eratosthenes best known for?
Eratosthenes, in full Eratosthenes of Cyrene, (born c. 276 bce, Cyrene, Libya—died c. 194 bce, Alexandria, Egypt), Greek scientific writer, astronomer, and poet, who made the first measurement of the size of Earth for which any details are known. Who was Eratosthenes and what did he discover? Eratosthenes may have been the first to use…