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18 feb 1809 anni - Электрохимический телеграф

Descrizione:

В 1809 году немецкий учёный Самуил Томас Земмеринг построил и испытал электрохимический телеграф на пузырьках газа.

Aggiunto al nastro di tempo:

Таймлайн истории развития телеграфа

ByАлександра

1 nov 2018

0

0

497

Data:

18 feb 1809 anni

Adesso

~ 216 years ago

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