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Magnetic dipole–dipole interaction, also called dipolar coupling, refers to the direct interaction between two magnetic dipoles. Roughly speaking, the magnetic field of a dipole goes as the inverse cube of the distance, and the force of its magnetic field on another dipole goes as the first derivative of the magnetic field. It follows that ...
In electromagnetism, a magnetic dipole is the limit of either a closed loop of electric current or a pair of poles as the size of the source is reduced to zero while keeping the magnetic moment constant. It is a magnetic analogue of the electric dipole, but the analogy is not perfect.
It is related to the prototypical Ising model, where at each site of a lattice, a spin {} represents a microscopic magnetic dipole to which the magnetic moment is either up or down. Except the coupling between magnetic dipole moments, there is also a multipolar version of Heisenberg model called the multipolar exchange interaction .
A simple transformer and its gyrator-capacitor model. R is the reluctance of the physical magnetic circuit. The gyrator–capacitor model [1] - sometimes also the capacitor-permeance model [2] - is a lumped-element model for magnetic circuits, that can be used in place of the more common resistance–reluctance model.
The magnetic field of a magnetic dipole depends on the strength and direction of a magnet's magnetic moment but drops off as the cube of the distance such that: = (() | | | |), where H {\displaystyle \mathbf {H} } is the magnetic field produced by the magnet and r {\displaystyle \mathbf {r} } is a vector from the center of the magnetic dipole ...
Magnetic dipole transitions describe the dominant effect of the coupling of the magnetic dipole moment of the electron to the magnetic part of the electromagnetic wave. They can be divided into two groups by the frequency at which they are observed: optical magnetic dipole transitions can occur at frequencies in the infrared, optical or ...
Download QR code; In other projects ... File:Magnetic dipole.svg}} ~~~~ Captions. English. Diagram of a magnetic dipole to find axial and equatorial magnetic field ...
It determines the magnetic field associated with a given current, or the current associated with a given magnetic field. The original circuital law only applies to a magnetostatic situation, to continuous steady currents flowing in a closed circuit. For systems with electric fields that change over time, the original law (as given in this ...