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30 déc. 1834 - Long range electricity transfer

Description:

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

Ajouté au bande de temps:

ASdmads a

ByJR

il y a 7 mois

2

0

298

Date:

30 déc. 1834

Maintenaint

~ Il y a 190 ans

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