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A device for detecting and recording variations in the intensity and direction of magnetic fields.

mag·ne′to·gram′ (-grăm′) n.


(mæɡˈniːtəʊˌɡrɑːf; -ˌɡræf)
(General Physics) a recording magnetometer, usually used for studying variations in the earth's magnetic field
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Noun1.magnetograph - a scientific instrument that registers magnetic variations (especially variations of the earth's magnetic field)
scientific instrument - an instrument used by scientists
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References in periodicals archive ?
Such flares sometimes disrupt the Earth's magnetic field causing a magnetic storm that can be recorded with a magnetograph.
London, July 3 ( ANI ): A Spanish instrument known as IMaX magnetograph has observed the sun for the formation and evolution of a magnetic flux tubes on its surface.
In addition to an X-ray telescope, Hinode carries a visible-light telescope to study the sun's surface and a magnetograph to monitor magnetic fields associated with sunspots.