24 agos 271 anni a. C. - Greek mathematician and geographer Eratosthenes
Descrizione:
proved that the Earth was round, and made a remarkably accurate calculation of its circumference and its tilt (as well as devising a system of latitude and longitude, and, possibly, estimating the distance of the Earth from the Sun).Aggiunto al nastro di tempo:
Data:
24 agos 271 anni a. C.
Adesso
~ 2298 years ago