magnetic dipole


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magnetic dipole

[mag′ned·ik ′dī‚pōl]
(electromagnetism)
An object, such as a permanent magnet, current loop, or particle with angular momentum, which experiences a torque in a magnetic field, and itself gives rise to a magnetic field, as if it consisted of two magnetic poles of opposite sign separated by a small distance.
References in periodicals archive ?
where [omega] is the angular rate vector, [J] is the tensor of inertia, m is the magnetic dipole moment, and [B.sub.b] is the geomagnetic field vector in [F.sub.b].
In Section 3 we discuss the importance of the infinitesimal central magnetic dipole from a potential aspect, introduce the dipole coordinates, and obtain general form of the dipole equation in azimuthal symmetry plus dipole coordinates.
The analogues in the case of the dipole model of magnetization are: [mathematical expression not reproducible] are the intensities, as well as the induction of the electric and magnetic fields; and; [mathematical expression not reproducible]; [[rho].sub.e] and [[rho].sub.m] are the volume densities of the polarization electric and fictitious magnetic charges; [[rho].sup.st.sub.e] and [[rho].sup.st.sub.m] are the volume densities of external [2] electric and fictitious magnetic charges; [[epsilon].sub.0] [??] [[mu].sub.0], [[epsilon].sub.0] is the electric constant; [mathematical expression not reproducible] are the moments of electric and magnetic dipoles; [+ or -]q and [+ or -]m are the point electric and fictitious magnetic charges located in the dipoles at distance l.
In the SM, the prediction for the magnetic dipole moment (MDM) of the top quark is [a.sup.SM.sub.t] = 0.02 [50], which can be tested in current and future colliders, such as LHC and CLIC.
This remarkable alteration of spectral properties of conical nanotubes with a variation of the aperture angle provides also a significant change of magnetic properties of the structure, particularly in the nonlinear dependence of the magnetic dipole moment of the ground state on the magnetic field.
Then, the electromagnetic incident fields [H.sup.i] and [E.sup.i] are radiated by the magnetic dipole (2) and they are scattered by the solid ellipsoid, creating the scattered fields [H.sup.s] and [E.sup.s], correspondingly.
In the (7), r represents the inter-well distance; z represents vertical offset; R can be calculated by R = [square root of ([r.sup.2] + [z.sup.2])]; M is the magnetic dipole moment; [omega] is the angle frequency and [mu] is the permittivity.
Xue, "Microstrip magnetic dipole Yagi array antenna with endfire radiation and vertical polarization," IEEE Trans.
the magnetic dipole is shifted from the center to the south
Roughly speaking it is the field of a magnetic dipole currently tilted at an angle of about 10 degrees with respect to Earth's rotational axis, as if there were a bar magnet placed at that angle at the center of the Earth.
Ethertronics' patented Isolated Magnetic Dipole (IMD) technology has a legacy as a strong foundation for passive, as well as active antennas designs.
The magnetism arises from the magnetic dipole moment of unpaired electrons in the d- or f-orbitals.