Eratosthenes (276 BC - 194 BC) was a Greek mathematician, astronomer, and geographer. He is considered one of the greatest mathematicians of ancient Greece and is best known for his method of measuring the size of the Earth.
Eratosthenes (276 BC - 194 BC) was a Greek mathematician, astronomer, and geographer. He is considered one of the greatest mathematicians of ancient Greece and is best known for his method of measuring the size of the Earth.