(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

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

(medicine) The lowest pharmaceutical dosage required to cause effect in 50% of average individuals.

(physics) The increase in the wavelength, and corresponding decrease in the energy, of photons (especially of X-rays and gamma rays) when scattered by interaction with matter

(pharmacology) The tendency of any medication or treatment, even an inert or ineffective one, to exhibit results simply because the recipient believes that it will work.

(physics) The creation of excess electron-hole pairs, triggered by impinging beta particles.

(fluid dynamics) In a flowing fluid, the occurrence of what is stated by Bernoulli's principle.

(physics) the conversion of electromagnetic radiation into electric power through absorption by a semiconducting material

(physics) the generation of static electricity by friction between different materials

(physics, fluid mechanics) The reduction in fluid pressure that results when a fluid flows through a constriction.