Spin quantum number

A quantum number describing intrinsic angular momentum. It specifies the spin magnitude and, together with a projection quantum number, the component measured along a chosen axis.

Intrinsic angular momentum: A particle's intrinsic angular momentum, independent of its motion through space. Spin quantum number labels the magnitude of this intrinsic angular momentum.
Spin-1/2: The spin value of particles whose spin angular momentum magnitude is √3ℏ/2. It is the spin value of electrons, quarks, and other fermions.
Electron spin resonance: A spectroscopy method that detects transitions between electron spin states in a magnetic field. It measures spin-state energy differences in atoms, molecules, and materials.
Orbital angular momentum: Angular momentum associated with a particle's spatial wavefunction and motion relative to an origin. Unlike spin, orbital angular momentum arises from spatial degrees of freedom.
Angular momentum quantum number: A quantum number labeling the magnitude of an angular momentum in units set by the reduced Planck constant. Spin uses the same quantized angular-momentum structure as orbital motion.
Spin-1: The spin value of particles whose spin angular momentum magnitude is √2ℏ. It illustrates an integer-spin case with three possible projections.
Nuclear magnetic resonance: A spectroscopy technique using transitions between nuclear spin states in a magnetic field. Nuclear spin quantum numbers determine the available magnetic states.
Classical angular momentum: The rotational quantity defined classically by a body's position and linear momentum. Quantum spin is not literal rotation of a particle around its axis.
Spin projection quantum number: A quantum number specifying a spin state's angular-momentum component along a chosen axis. It distinguishes projections available for a fixed spin quantum number.
Stern–Gerlach experiment: An experiment that separates a beam of atoms according to quantized angular-momentum projections. Its discrete beam splitting revealed projection quantization.

Linked from 12 pages