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Active acoustic screening: reduction of noise in gradient coils by Lorentz force balancing

P Mansfield1, B L Chapman, R Bowtell

  • 1Department of Physics, University of Nottingham, England.

Magnetic Resonance in Medicine
|February 1, 1995
PubMed

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Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
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