All articles starting with S

Spin City

Spin City (1996–2002) is an ABC sitcom created by Gary David Goldberg and Bill Lawrence about New York Deputy Mayor Mike Flaherty (Michael J. Fox) managing Mayor Randall Winston; Charlie Sheen led the final two seasons after Fox left.

Sep 29, 2026

Spin coating

Spin coating is a thin-film deposition technique in which a liquid on a rapidly spinning substrate spreads into a thin, uniform layer, used for photoresists and solar cells.

Spin connection

The spin connection is a connection on the bundle of orthonormal frames of a metric-equipped manifold, written as a one-form with one spacetime index and two Lorentz indices.

Spin crossover

Spin crossover is a phenomenon in molecular magnetism where temperature, pressure, or light switches a transition-metal complex between high-spin and low-spin states, first reported around 1930.

Spin current

A spin current is a flow of spin angular momentum in condensed matter, the spin counterpart of electric current, where spins are transported without or with charge flow.

Spin defects in hexagonal boron nitride

Spin defects in hexagonal boron nitride are atomic defects whose electron spins are optically controllable, making the 2D material a platform for quantum sensing and qubits.

Spin density wave

A spin density wave (SDW) is a periodic modulation of electron spin density in a metal, carried by mobile conduction electrons; chromium shows one below 311 K.

Spin Doctors

Spin Doctors, American alternative rock band formed in New York City in 1988, grew from the Trucking Company with John Popper. Known for the 1991 multi-platinum Pocket Full of Kryptonite and hits "Two Princes" and "Little Miss Can't Be Wrong"; still active with Face Full of Cake (2025).

Spin dynamics

Spin dynamics is the accelerator-physics study of how particle spin precesses and depolarizes in ring fields, described by the Thomas-BMT equation, with Sokolov-Ternov self-polarization and Siberian Snakes preserving beam polarization.

Spin echo

The spin echo, also called the Hahn echo, is an NMR signal revived by radiofrequency pulses; Erwin Hahn discovered it in 1950, and it underlies MRI.

Spin exciton

A spin exciton, also called a magnetic exciton, is a quasiparticle bound to an ordered spin background in a magnet. It is best studied in NiPS₃.

Spin foam model

A spin foam model is a path-integral state sum over 2-complexes with spin-labeled faces and intertwiner-labeled edges, extending loop quantum gravity's spin networks to quantum spacetime.

Spin foam models

Spin foam models are state-sum formulations of non-perturbative, background-independent quantum gravity, closely related to loop quantum gravity, computing transition amplitudes between quantum states as sums over spin foams.

Spin glass

A spin glass is a magnetic material whose atomic moments freeze into random directions at low temperature, combining quenched disorder and frustration with slow, history-dependent aging dynamics.

Spin Hall effect

The spin Hall effect is a phenomenon in which electrical current in a non-magnetic conductor generates a transverse spin current without magnetic fields, first observed in 2004.

Spin Hall magnetoresistance

Spin Hall magnetoresistance (SMR) is a magnetization-dependent resistance change in heavy metals like platinum or tungsten next to a magnetic layer, first observed in platinum/YIG bilayers in 2013.

Spin Hall magnetoresistance in antiferromagnets

Spin Hall magnetoresistance in antiferromagnets (SMR) is a resistance change in a heavy metal such as platinum contacting an antiferromagnet, reflecting its magnetic order's orientation.

Spin Hall nano-oscillator

A spin Hall nano-oscillator (SHNO) is a nanoscale spintronic device in which spin Hall effect spin currents drive magnetic precession, generating tunable microwave signals for neuromorphic computing.

Spin ice

Spin ice is a magnetic state of matter in certain crystals whose moments obey two-in, two-out ice rules on tetrahedra, mirroring proton disorder in water ice and carrying residual entropy.

Spin image

A spin image is a 3D surface shape descriptor, a 2D histogram around an oriented point introduced by Johnson and Hebert at Carnegie Mellon in 1999.

Sep 29, 2026

Spin labeling

Spin labeling is a biochemical technique that attaches a stable paramagnetic group, usually a nitroxide radical, to a biomolecule so EPR spectroscopy can report its structure and dynamics.

Spin Master

Spin Master, also known as Spin Master Toys, is a Canadian toy and entertainment company founded in Toronto in 1994, known for PAW Patrol, Bakugan, and Rubik's Cube.

Oct 3, 2026

Spin Me Round

Spin Me Round is a 2022 comedy directed by Jeff Baena, co-written with star Alison Brie, about a chain-restaurant manager whose Italian company retreat turns chaotic; released by IFC Films, mixed reviews.

Spin Nernst effect

The spin Nernst effect is a thermo-spin effect in which a temperature gradient generates a transverse pure spin current in a nonmagnetic conductor, first observed in 2017.

Spin network

A spin network is a graph whose edges are labeled by group representations and whose vertices carry intertwiners, introduced by Roger Penrose in 1971 and central to loop quantum gravity.

Spin networks

Spin networks are graphs with edges labeled by group representations that serve as quantum states of space in loop quantum gravity, introduced by Roger Penrose in 1971.

Spin operator

In quantum mechanics, the spin operator is a vector operator whose components represent a particle's intrinsic angular momentum, which has no classical analogy and may take half-integer values.

Spin Peltier effect

The spin Peltier effect is a thermoelectric phenomenon in which a spin current injected into a magnetic material generates a heat current, heating or cooling the interface.

Spin polarization

Spin polarization is the imbalance between the spin-up and spin-down populations of a particle ensemble, ranging from zero for unpolarized spins to full alignment, and underlying spintronic memory.