magnetic feedbackmagnetic fieldmagnetic field loggingmagnetic float gaugemagnetic flux leakagemagnetic fuidsmagnetic gradient tensormagnetic gradiometrymagnetic hummagnetic inclinationmagnetic induced polarization methodmagnetic inductionmagnetic latitudemagnetic levitationmagnetic local anomalymagnetic manmagnetic mapmagnetic markermagnetic materialsmagnetic meridianmagnetic minemagnetic modelmagnetic momentmagnetic monopolemagnetic multipolemagnetic multipole fieldmagnetic northmagnetic observatorymagnetic particle testingmagnetic particles testmagnetic permeabilitymagnetic personmagnetic personalitymagnetic plasma confinementmagnetic polaritymagnetic polarizationmagnetic polemagnetic probemagnetic profilemagnetic prospectingmagnetic quantum numbermagnetic refrigerationmagnetic relaxationmagnetic resonancemagnetic resonance imagingmagnetic secular changemagnetic separationmagnetic signalmagnetic signaturemagnetic signature control