User:John R. Brews/Sample: Difference between revisions
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==Magnetic moment== | ==Magnetic moment== | ||
In physics, the '''magnetic moment''' of an object is a [[vector]] property, denoted here as '''m''', that determines the [[torque]] it experiences in a [[magnetic flux density]] '''B'''. As such, it also determines the change in [[potential energy]] of the object, denoted here by ''U'', when it is introduced to this flux, namely ''U'' = −'''m·B'''. | In physics, the '''magnetic moment''' of an object is a [[vector]] property, denoted here as '''m''', that determines the [[torque]], denoted here by '''T''', it experiences in a [[magnetic flux density]] '''B''', namely '''T''' = '''m × B''' (where '''×''' denotes the [[Vector product|vector cross product]]). As such, it also determines the change in [[potential energy]] of the object, denoted here by ''U'', when it is introduced to this flux, namely ''U'' = −'''m·B'''. | ||
Revision as of 18:29, 18 December 2010
Magnetic moment
In physics, the magnetic moment of an object is a vector property, denoted here as m, that determines the torque, denoted here by T, it experiences in a magnetic flux density B, namely T = m × B (where × denotes the vector cross product). As such, it also determines the change in potential energy of the object, denoted here by U, when it is introduced to this flux, namely U = −m·B.