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30 дек 1834 г. - Long range electricity transfer

Описание:

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

Добавлено на ленту времени:

ASdmads a

ByJR

2 мес назад

2

0

229

Дата:

30 дек 1834 г.

Сейчас

~ 190 г назад

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