# Angular momentum (quantum)/Related Articles

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- Angular momentum (classical) [r]: The tendency of a rotating object to resist changes to its rotational motion.
^{[e]} - Angular momentum (disambiguation) [r]:
*Add brief definition or description* - Angular momentum coupling [r]: The procedure of constructing eigenvectors of a system's angular momentum out of angular momentum eigenvectors of its subsystems.
^{[e]} - Associated Legendre function [r]: Function defined by where
*P*denotes a Legendre function._{ℓ}^{[e]} - Clebsch-Gordan coefficients [r]: appear in total angular momentum eigenstates when written in terms of angular momentum states of subsystems.
^{[e]} - Electromagnetic wave [r]: A change, periodic in space and time, of an electric field
**E**(**r**,t) and a magnetic field**B**(**r**,t); a stream of electromagnetic waves, referred to as electromagnetic radiation, can be seen as a stream of massless elementary particles, named photons.^{[e]} - Electron orbital [r]: Quantum mechanical quadratically integrable one-electron function (function of the coordinates of one electron)
^{[e]} - Electron shell [r]: A group of electron orbitals that share the same principal quantum number (
*n*).^{[e]} - Hydrogen-like atom [r]: An atom, excluding hydrogen itself, with only one electron, having charge +(Z-1), where Z = atomic number.
^{[e]} - NMR spectroscopy [r]: The use of
**electromagnetic radiation**, in the presence of a**magnetic field**, to obtain information regarding**transitions between different nuclear spin states**of the nuclei present in the sample of interest.^{[e]} - Nuclear magnetic resonance [r]: A property that magnetic nuclei have in a magnetic field and applied electromagnetic (EM) pulse, which cause the nuclei to absorb energy from the EM pulse and radiate this energy back out.
^{[e]} - Russell-Saunders coupling [r]: A coupling scheme of electronic spin- and orbital-angular momenta in atomic spectroscopy.
^{[e]} - Slater determinant [r]: A form for the wavefunction of a multi-fermionic system that satisfies anti-symmetry requirements, and consequently the Pauli exclusion principle, by changing sign upon exchange of fermions.
^{[e]} - Solid harmonics [r]: Solutions of the Laplace equation in spherical polar coordinates.
^{[e]} - Spherical harmonics [r]: A series of harmonic basis functions that can be used to describe the boundary of objects with spherical topology.
^{[e]} - Term symbol [r]: An abbreviated description of the angular momentum quantum numbers in a multi-electron atom.
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