eratosthenes

• Nome próprio referente ao matemático, astrônomo e geógrafo grego do século III a.C., conhecido por calcular a circunferência da Terra e estimar as distâncias até a Lua e o Sol.

A proper noun referring to a Greek mathematician and astronomer from the 3rd century BC, known for calculating the Earth's circumference and estimating distances to the Moon and Sun.

incontável · nome próprio

1. Greek scholarC1formal

   An ancient Greek mathematician, astronomer, and geographer who accurately calculated the Earth's circumference and the distances to the Moon and Sun.

   Estudioso grego

   • Eratosthenes used shadows and geometry to estimate the Earth's size.
   • The works of Eratosthenes laid the foundation for modern geography.
   • He was the chief librarian of the Library of Alexandria.