`circumference-of-the-earth` Related Article Results

Eratosthenes (c. 276–194 BCE) was one of the most versatile scholars of the ancient world. He made contributions as a mathematician, astronomer, geographer, poet, philosopher, and librarian. He is particularly known for measuring the Earth’s circumference, developing the “Sieve of Eratosthenes” to identify prime numbers, and laying the foundations of geography as a scientific discipline. During his tenure as chief librarian of the Library of Alexandria, he played a leading role in the institutio