(physics) The polarization of the spin of electrons produced when alkali atoms absorb circularly polarized light; any of several similar quantum optical effects

(psychology) The phenomenon that someone is less likely to help another if other potential helpers are present than otherwise.

plural of after-effect

An effect; especially, one that is experienced only after a delay, or only in the long term.

The secondary emission of an electron following the ionisation of a core electron of an atom.

(law) A discouraging effect, especially on certain forms of officially legal speech. / Synonym of windchill.

(economics) The higher growth rate of businesses with higher market share in those segments of economy in which the value of a product or service depends on the compounding effects of the number of existing users of the product or a service, as is the case with telephone networks.

plural of side effect

plural of special effect

plural of spoiler effect