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  2. Magnetic moment - Wikipedia

    en.wikipedia.org/wiki/Magnetic_moment

    The magnetic moment also expresses the magnetic force effect of a magnet. The magnetic field of a magnetic dipole is proportional to its magnetic dipole moment. 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.

  3. Magnetic dipole - Wikipedia

    en.wikipedia.org/wiki/Magnetic_dipole

    Moreover, one form of magnetic dipole moment is associated with a fundamental quantum property—the spin of elementary particles. Because magnetic monopoles do not exist, the magnetic field at a large distance from any static magnetic source looks like the field of a dipole with the same dipole moment. For higher-order sources (e.g ...

  4. List of electromagnetism equations - Wikipedia

    en.wikipedia.org/wiki/List_of_electromagnetism...

    The definitions for monopoles are of theoretical interest, although real magnetic dipoles can be described using pole strengths. There are two possible units for monopole strength, Wb (Weber) and A m (Ampere metre). Dimensional analysis shows that magnetic charges relate by q m (Wb) = μ 0 q m (Am).

  5. List of physical quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_quantities

    Magnetic flux density: B: Measure for the strength of the magnetic field tesla (T = Wb/m 2) M T −2 I −1: pseudovector field Magnetic moment (or magnetic dipole moment) m: The component of magnetic strength and orientation that can be represented by an equivalent magnetic dipole: N⋅m/T L 2 I: vector Magnetization: M: Amount of magnetic ...

  6. Force between magnets - Wikipedia

    en.wikipedia.org/wiki/Force_between_magnets

    As such, the SI unit of magnetic dipole moment is ampere meter 2. More precisely, to account for solenoids with many turns the unit of magnetic dipole moment is ampere–turn meter 2. In the magnetic pole model, the magnetic dipole moment is due to two equal and opposite magnetic charges that are separated by a distance, d.

  7. Magnetization - Wikipedia

    en.wikipedia.org/wiki/Magnetization

    In classical electromagnetism, magnetization is the vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material. Accordingly, physicists and engineers usually define magnetization as the quantity of magnetic moment per unit volume. [1] It is represented by a pseudovector M.

  8. Anomalous magnetic dipole moment - Wikipedia

    en.wikipedia.org/wiki/Anomalous_magnetic_dipole...

    As of 2016, the coefficients of the QED formula for the anomalous magnetic moment of the electron are known analytically up to [3] and have been calculated up to order : [4] [5] [6] = () The QED prediction agrees with the experimentally measured value to more than 10 significant figures, making the magnetic moment of the electron one of the ...

  9. Dipole - Wikipedia

    en.wikipedia.org/wiki/Dipole

    A theoretical magnetic point dipole has a magnetic field of exactly the same form as the electric field of an electric point dipole. A very small current-carrying loop is approximately a magnetic point dipole; the magnetic dipole moment of such a loop is the product of the current flowing in the loop and the (vector) area of the loop.