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magnetometer
A device for measuring the strength and direction of a magnetic field. Magnetometers typically detect the strength of magnetic fields in three planes. Various types exist, exploiting, for instance the oscillation rate of a small, freely suspended bar magnet or the deflection of a magnet against its suspension or a reference field. Sensitive magnetometers used in space research include the proton precession magnetometer and the helium magnetometer.
Related categories
• ELECTRICITY AND MAGNETISM
• INSTRUMENTATION
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