magnetometer

Small magnetometers like these measure magnetic strength on Earth and in the atmosphere to determine how much of the Sun's magnetic energy has been transferred to Earth's magnetosphere. Images credit: Glassmeier, et al.

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

Also on this site:

Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History

BACK TO TOP