eratosthenes

• Имя собственное, относящееся к греческому математику и астроному III века до н.э., известному вычислением окружности Земли и оценкой расстояний до Луны и Солнца.

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.

uncountable · proper noun

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.

   Греческий учёный

   • 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.