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30 dez 1834 ano - Long range electricity transfer

Descrição:

Joseph Henry (United States) invented the electrical relay, which could send electrical currents long distances.

Adicionado na linha do tempo:

ASdmads a

ByJR

7 meses atrás

2

0

305

Data:

30 dez 1834 ano

Agora

~ 190 years ago

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