Quote:
Originally Posted by Herald1360
Well it is possible to use a Helium cooled MRI magnet system as a loudspeaker- as demonstrated historically in Magnet Test at Oxford Magnet Technology around Christmas to play a few carols a good few years back.
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I confess that I did know that, I used to work as technical trainer in IGE Medical Systems training school at Slough. Having access to X-Ray and MRI equipment to play with was good fun.
The noises from an MRI scanner come from magnetostriction from the large currents in the gradient coils. I was thinking more of placing a (large) voice coil in the bore of the magnet attached to a very large diaphragm.
Peter