Carbon Microphone
by Universal History Archive/uig
Title
Carbon Microphone
Artist
Universal History Archive/uig
Medium
Photograph - Photograph
Description
Carbon microphone, invented in 1878 by David Edward Hughes (1831-1900), English inventor. From R. Wormell Electricity in the Service of Man, London, 1890. Engraving
Uploaded
July 12th, 2016
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