5 gen 200 anni a. C. - Invention of Astrolabe
Descrizione:
An ancient device used to determine the position of the user and the time of day. The positions of the sun and stars in the sky allowed explorers to determine where they were in relation to the equator.
Aggiunto al nastro di tempo:
Data:
5 gen 200 anni a. C.
Adesso
~ 2227 years ago