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10 ago 645 ano - The mechanical clock is invented

Descrição:

During Tang Dynasty, Yi Xing invented the first mechanical clock. But this is only the prototype. The clock is improved during Song Dynasty.

Adicionado na linha do tempo:

China Invention Timeline

ByThe cool boy #101
26 jan 2018

Data:

10 ago 645 ano
Agora
~ 1379 years ago
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