Daedalus A magnetic speaker

David Jones

Nature, 1998, vol. 395, issue 6700, 331-331

Abstract: Imagine the clarity of sound that you could get with a loudspeaker containing no moving parts at all. This is the idea behind Daedalus' ‘Paraspeaker’, which exploits the fact that the oxygen found in air is paramagnetic. The Paraspeaker will simply be a large, magnetic coil, to which the air is attracted and compressed. By varying the magnetic field at an audio frequency, the pressure will vary in sympathy.

Date: 1998
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DOI: 10.1038/26367

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