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Marconi-Reis transverse-current carbon microphone, 1925-1935
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Marconi-Reis transverse-current carbon microphone, 1925-1935, result 1 of 1

Item Details
Open Artstor
Available to everyone
Title
Marconi-Reis transverse-current carbon microphone, 1925-1935
Marconi-Reisz transverse-current carbon microphone
Work Type
Radio Communication
Date
1925-1935
Location
United Kingdom
Material
marble (limestone); metal (unknown)
Measurements
overall: 105 mm x 140 mm x 95 mm, 1.78kg
Description
Marconi-Reis transverse-current carbon microphone, invented by Georg Neumann, unknown maker, British, 1925-1935.; Marconi-Reis transverse-current carbon microphone, invented by Georg Neumann, unknown maker, British, 1925-1935.; This was the BBC's standard microphone between 1926 and 1933. Within the heavy marble body of the microphone carbon granules fill a shallow space between electrodes placed along its shorter sides. As sound entered the microphone the sound waves compressed the carbon granules, affecting an electrical signal that could be transmitted by radio.
Repository
Science Museum, Information Age Gallery: Broadcast
Donated by the British Broadcasting Corporation.
Subject
microphone
ID Number
co34997
Source
Image and original data from Science Museum Group - https://collection.sciencemuseum.org.uk
Rights
The source metadata displayed in the Description field is released under a Creative Commons Attribution 4.0 license - https://creativecommons.org/licenses/by/4.0/. All other source metadata is released under Creative Commons Zero - https://creativecommons.org/publicdomain/zero/1.0/. The image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License - https://creativecommons.org/licenses/by-nc-sa/4.0/.
File Properties
File Name
large_1949_0131__0001_.jpg
SSID
26290038

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