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8 dez 19986 ano antes da era comum - Ancient Sumerians created the sundial.

Descrição:

This used 12 hours per rotation, just like our clocks today. They used 12 hours because it fit nicely into 360 degrees. Also, dividing it down fit evenly into it.

Adicionado na linha do tempo:

clocks

ByLogan Nelson
14 set 2017
0
0
716

Data:

8 dez 19986 ano antes da era comum
Agora
~ 22027 years ago

Imagens:

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