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dec 28, 1875 - Telephone

Description:

a system that converts acoustic vibrations to electrical signals in order to transmit sound, typically voices, over a distance using wire or radio.

Added to timeline:

Timeline of Technology Dorian

ByDorian Lavier

12 Sep 2017

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760

Date:

dec 28, 1875

Now

~ 149 years ago

Images:

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