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sep 9, 1835 - Telegrafen

Description:

Det var amerikaneren Samuel Morse som fant opp telegrafen. Den fungerer ved å sende elektromagnetiske signaler over et ledningsnett. Man kunne ikke sende vanlige meldinger med tekst man måtte sende morsekode.

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Den industrielle revolusjon

ByIben Sørgjerd Lyng
29 Oct 2018
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418

Date:

sep 9, 1835
Now
~ 190 years ago

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