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  2. Permeability (electromagnetism) - Wikipedia

    en.wikipedia.org/wiki/Permeability...

    In SI units, permeability is measured in henries per meter (H/m), or equivalently in newtons per ampere squared (N/A 2). The permeability constant μ 0, also known as the magnetic constant or the permeability of free space, is the proportionality between magnetic induction and magnetizing force when forming a magnetic field in a classical vacuum.

  3. Vacuum permeability - Wikipedia

    en.wikipedia.org/wiki/Vacuum_permeability

    The vacuum magnetic permeability (variously vacuum permeability, permeability of free space, permeability of vacuum, magnetic constant) is the magnetic permeability in a classical vacuum. It is a physical constant , conventionally written as μ 0 (pronounced "mu nought" or "mu zero").

  4. Magnetic susceptibility - Wikipedia

    en.wikipedia.org/wiki/Magnetic_susceptibility

    Thus the volume magnetic susceptibility χ v and the magnetic permeability μ are related by the following formula: = (+). Sometimes [ 6 ] an auxiliary quantity called intensity of magnetization I (also referred to as magnetic polarisation J ) and with unit teslas , is defined as I = d e f μ 0 M . {\displaystyle \mathbf {I} {\stackrel {\mathrm ...

  5. Magnetic Thermodynamic Systems - Wikipedia

    en.wikipedia.org/wiki/Magnetic_Thermodynamic_Systems

    The total energy in the space occupied by the system includes a component arising from the energy of a magnetic field in a vacuum. This component equals U v a c u u m = B e 2 V 2 μ 0 {\displaystyle U_{vacuum}={\frac {B_{e}^{2}V}{2\mu _{0}}}} , where μ 0 {\displaystyle \mu _{0}} is the permeability of free space , and isn't included as a part ...

  6. 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).

  7. Electromagnetic wave equation - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_wave_equation

    The electromagnetic wave equation is a second-order partial differential equation that describes the propagation of electromagnetic waves through a medium or in a vacuum. It is a three-dimensional form of the wave equation. The homogeneous form of the equation, written in terms of either the electric field E or the magnetic field B, takes the form:

  8. Magnetic energy - Wikipedia

    en.wikipedia.org/wiki/Magnetic_energy

    The energy per unit volume in a region of free space with vacuum permeability containing magnetic field is: = More generally, if we assume that the medium is paramagnetic or diamagnetic so that a linear constitutive equation exists that relates and the magnetization (for example = / where is the magnetic permeability of the material), then it ...

  9. List of physical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_constants

    vacuum magnetic permeability: 1.256 637 061 27 ... which gives the correspondence of the dimension temperature to the dimension of energy per degree of freedom, ...