Mahogany coarse carbon granule microphone No. 3
Mahogany coarse carbon granule microphone No. 3, part of Oliver Lodge’s microphone amplifier or relay, 1898 (British patent 9712 of 1898), a precursor of the moving-coil loudspeaker
Details
- Category:
- Radio Communication
- Object Number:
- 1926-715
- Materials:
- mahogany (wood)
- type:
- microphone
- credit:
- Sir Oliver Lodge.
