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5 авг 1816 г. - First Major Electrical Engineering Begins

Описание:

Francis Ronalds develops the first electrical telegraph but is rejected by the wider community.

Elements of his plans would be used twenty years later in the first commerically sucesfull telegaph.

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Дата:

5 авг 1816 г.
Сейчас
~ 209 г назад