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jan 1, 1876 - the Microphone

Description:

The microphone had a wire which conducted an electrical direct current. Also, audio signals were generated and received by a moving armature transmitter and its receiver, and transmission was possible from both directions.

Added to timeline:

Donald Trump 10190

ByAdriana Giovinazzi
25 Mar 2024
1
0
66

Date:

jan 1, 1876
Now
~ 150 years ago

Images:

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