# Angular momentum (quantum)/Related Articles

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A list of Citizendium articles, and planned articles, about Angular momentum (quantum).

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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 ${\displaystyle P_{\ell }^{(m)}(x)=(1-x^{2})^{m/2}{\tfrac {d^{m}}{dx^{m}}}P_{\ell }(x)}$ where P denotes a Legendre function. [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. [e]