Eratosthenes was a Greek mathematician, geographer, and astronomer who lived in the 3rd century BCE. He was the chief librarian at the Library of Alexandria and made important contributions to mathematics, geography, and astronomy. But perhaps Eratosthenes is best known for his calculation of the Earth’s circumference. American astronomer, planetary...
Eratosthenes was a Greek mathematician, geographer, and astronomer who lived in the 3rd century BCE. He was the chief librarian at the Library of Alexandria and made important contributions to mathematics, geography, and astronomy. But perhaps Eratosthenes is best known for his calculation of the Earth’s circumference. American astronomer, planetary...