(physics) The zero-voltage current of paired electrons through a weak connection between superconductors.

(of a drug, etc.) To become active; to become effective. / (of a law, etc.) To come into force, to come into effect, to inure.

(physics) The splitting of single spectral lines into three (or more) in the presence of a magnetic field.

An unintended consequence of any action in addition to the intended consequence of that action.

The apparent change in frequency or wavelength of a wave that is perceived by an observer moving relative to the source of the waves.

(physics) an effect that arises from the relation between the angular momentum and the magnetization of a magnetic substance

(physics) the magnetic self-attraction of parallel electric currents having the same direction; the restriction of a flowing plasma because of this attraction

(sociology) the observation that people often do or believe what they think many other people do.

An artificially created or enhanced sound, used to accompany the action of a dramatic production, such as a film, play or video game

(physics) The visible scattering of light along the path of a beam caused by discontinuities such as suspended particles.