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apr 6, 1809 - Постройка и испытание электрохимического телеграфа

Description:

в 1809 году немецкий учёный Самуил Томас Земмеринг построил и испытал электрохимический телеграф

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Развитие сетей

ByГеоргий
9 Dec 2018
0
0
367

Date:

apr 6, 1809
Now
~ 216 years ago
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