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apr 6, 1774 - Постройка электрического телеграфа

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Одна из первых попыток создать средство связи с использованием электричества.Лесаж в 1774 году построил в Женеве электростатический телеграф

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Развитие сетей

ByГеоргий

9 Dec 2018

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apr 6, 1774

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~ 251 years ago

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