Definitions for magnetic moment

This page provides all possible meanings and translations of the word magnetic moment

Random House Webster's College Dictionary

magnet′ic mo′ment(n.)

  1. the product of the strength of either magnetic pole of a dipole and the distance between the poles.

    Category: Electricity and Magnetism

Origin of magnetic moment:

1860–65

Princeton's WordNet

  1. magnetic moment, moment of a magnet(noun)

    the torque exerted on a magnet or dipole when it is placed in a magnetic field

Wiktionary

  1. magnetic moment(Noun)

    The torque exerted on a magnet within a magnetic field; a vector, being the product of the strength of the magnet and the distance between its poles.

Freebase

  1. Magnetic moment

    The magnetic moment of a magnet is a quantity that determines the force that the magnet can exert on electric currents and the torque that a magnetic field will exert on it. A loop of electric current, a bar magnet, an electron, a molecule, and a planet all have magnetic moments. Both the magnetic moment and magnetic field may be considered to be vectors having a magnitude and direction. The direction of the magnetic moment points from the south to north pole of a magnet. The magnetic field produced by a magnet is proportional to its magnetic moment as well. More precisely, the term magnetic moment normally refers to a system's magnetic dipole moment, which produces the first term in the multipole expansion of a general magnetic field. The dipole component of an object's magnetic field is symmetric about the direction of its magnetic dipole moment, and decreases as the inverse cube of the distance from the object.

The Standard Electrical Dictionary

  1. Magnetic Moment

    The statical couple with which a magnet would be acted on by a uniform magnetic field of unit intensity if placed with its magnetic axis at right angles to the lines of force of the field. (Emtage.) A uniformly and longitudinally magnetized bar has a magnetic moment equal to the product of its length by the strength of its positive pole.

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