Marconi-Reis transverse-current carbon microphone, 1925-1935

Made:
1925-1935 in United Kingdom
maker:
Unknown

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Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Creative Commons LicenseThis image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Creative Commons LicenseThis image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Buy this image as a print 

License this image for commercial use at Science and Society Picture Library

Marconi-Reisz transverse-current carbon microphone, invented by Georg Neumann, unknown maker, British,
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Marconi-Reisz transverse-current carbon microphone, invented by Georg Neumann, unknown maker, British,
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Marconi-Reisz transverse-current carbon microphone, invented by Georg Neumann, unknown maker, British,
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Marconi-Reisz transverse-current carbon microphone, invented by Georg Neumann, unknown maker, British,
Science Museum Group Collection
© The Board of Trustees of the Science Museum

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.

On display

Science Museum: Information Age Gallery: Broadcast

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Details

DisplayLocation:
Science Museum, Information Age Gallery: Broadcast
Category:
Radio Communication
Object Number:
1949-131
Materials:
marble (limestone), metal (unknown)
type:
microphone
credit:
Donated by the British Broadcasting Corporation.
status:
Permanent collection

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