18.5 turn aluminium strip coil to suit gap with wooden tripod support
- maker:
- Oliver Joseph Lodge
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Licence
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License
Science Museum Group
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18.5 turn aluminium strip coil to suit gap with wooden tripod support, 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:
- 1926-712
- Materials:
- metal (unknown), paper (fibre product) and wood (unidentified)
- Measurements:
-
overall: 79 mm x 40 mm x 48 mm, .004 kg
- type:
- coil
- credit:
- Sir Oliver Lodge.
