dipole vector

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• Dipole — This article is about the electromagnetic phenomenon. For other uses, see dipole (disambiguation). The Earth s magnetic field, approximated as a magnetic dipole. However, the N and S (north and south) poles are labeled here geographically, which… …   Wikipedia

• dipole moment — noun the vector product of the charge on either pole of a dipole and the distance separating them …   Wiktionary

• Bond dipole moment — The bond dipole moment uses the idea of electric dipole moment to measure the polarity of a chemical bond within a molecule. The bond dipole μ is given by::mu = delta , d.The bond dipole is modeled as +δ mdash; δ with a distance d between the… …   Wikipedia

• Electric dipole moment — In physics, the electric dipole moment (or electric dipole for short) is a measure of the polarity of a system of electric charges. In the simple case of two point charges, one with charge {+}q and one with charge { }q, the electric dipole moment …   Wikipedia

• Magnetic dipole — A magnetic dipole is the limit of either a closed loop of electric current or a pair of poles as the dimensions of the source are reduced to zero while keeping the magnetic moment constant. It is a magnetic analogue of the electric dipole, but… …   Wikipedia

• Transition dipole moment — The Transition dipole moment or Transition moment, usually denoted scriptstyle{mathbf{d} {nm for a transition between an initial state, scriptstyle{m}, and a final state, scriptstyle{n}, is the electric dipole moment associated with the… …   Wikipedia

• magnetic dipole — Tiny magnet with subatomic dimensions, equivalent to the flow of electric charge around a loop. Examples include electrons circulating around atomic nuclei, rotating atomic nuclei, and single subatomic particles with spin. On a large scale, these …   Universalium

• electric dipole — Pair of equal and opposite electric charges, the centres of which do not coincide. An atom in which the centre of the negative cloud of electrons has been shifted slightly away from the nucleus by an external electric field is an induced electric …   Universalium

• Magnetic dipole-dipole interaction — Magnetic dipole dipole interaction, also called dipolar coupling, refers to the direct interaction between two magnetic dipoles. The energy of the interaction is as follows:: old{H} = frac{ mu 0 } {4 pi r {jk}^3 } left( 3 (old{m} j cdot old{e} …   Wikipedia

• Magnetic dipole–dipole interaction — Magnetic dipole–dipole interaction, also called dipolar coupling, refers to the direct interaction between two magnetic dipoles. The potential energy of the interaction is as follows: where ejk is a unit vector parallel to the line joining the… …   Wikipedia

• electric dipole moment — noun the dipole moment in an electric dipole • Hypernyms: ↑dipole moment * * * Elect. a vector quantity associated with two equal charges of opposite sign separated by a specified distance, having magnitude equal to the product of the charge and… …   Useful english dictionary