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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 ?
Strictly speaking, for a spot to be considered a new or old cycle spot, it should have the appropriate magnetic configuration of leading and following spots, which can be determined from magnetograph observations.
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.