(film, television) An effect that cannot be reasonably achieved by normal means, as for example by the digital manipulation of previously filmed footage.

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

(physics) Birefringence of a material induced by an electric field due to partial orientation of its molecules.

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

(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 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

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

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

(physics) the inelastic scattering of photons with subsequent change in frequency and phase; employed in Raman spectroscopy