(physics) the reversible change in temperature that accompanies the change of magnetization of a ferromagnetic or paramagnetic material

(physics) the resonant and recoil-free emission and absorption of gamma rays by atoms in the solid state; the basis of a type of spectroscopy with applications in both physics and chemistry

To alter as a side effect.

(physics) The total expulsion of magnetic flux from the interior of a superconducting metal when it is cooled in a magnetic field below a critical temperature, near absolute zero, at which the transition to superconductivity takes place.

(physics) the effect in which a conductor that carries an electric current perpendicular to an applied magnetic field develops a voltage gradient transverse to both current and field

(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.