- complementarity principle
the principle that experiments on physical systems of atomic size or smaller, as electrons or photons, can exhibit either particle or wave behavior but not both simultaneously.
* * *▪ physicsin physics, tenet that a complete knowledge of phenomena on atomic dimensions requires a description of both wave and particle properties. The principle was announced in 1928 by the Danish physicist Niels Bohr (Bohr, Niels). Depending on the experimental arrangement, the behaviour of such phenomena as light and electrons is sometimes wavelike and sometimes particle-like; i.e., such things have a wave-particle duality (q.v.). It is impossible to observe both the wave and particle aspects simultaneously. Together, however, they present a fuller description than either of the two taken alone.In effect, the complementarity principle implies that phenomena on the atomic and subatomic scale are not strictly like large-scale particles or waves (e.g., billiard balls and water waves). Such particle and wave characteristics in the same large-scale phenomenon are incompatible rather than complementary. Knowledge of a small-scale phenomenon, however, is essentially incomplete until both aspects are known.
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См. также в других словарях:
complementarity principle — papildomumo principas statusas T sritis fizika atitikmenys: angl. complementarity principle vok. Ergänzungsprinzip, n; Komplementaritätsprinzip, n rus. принцип дополнительности, m pranc. principe de complémentarité, m … Fizikos terminų žodynas
complementarity principle — Physics. the principle that experiments on physical systems of atomic size or smaller, as electrons or photons, can exhibit either particle or wave behavior but not both simultaneously … Useful english dictionary
Complementarity (physics) — In physics, complementarity is a basic principle of quantum theory proposed by Niels Bohr, closely identified with the Copenhagen interpretation, and refers to effects such as the wave–particle duality. Just like the finitude of the speed of… … Wikipedia
principle of complementarity — Physics. See complementarity principle. [COMPLEMENTARY + TY2] * * * … Universalium
principle of complementarity — Physics. See complementarity principle. [COMPLEMENTARY + TY2] … Useful english dictionary
Complementarity — may refer to: Contents 1 Mathematics 2 Physical sciences 3 Social sciences … Wikipedia
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wave-particle duality — Principle that subatomic particles possess some wavelike characteristics, and that electromagnetic waves, such as light, possess some particlelike characteristics. In 1905, by demonstrating the photoelectric effect, Albert Einstein showed that… … Universalium
Afshar experiment — The Afshar experiment is an optical experiment which may challenge the principle of complementarity in quantum mechanics, although there is as yet no consensus on this in physics. The result of the experiment, which was first devised and carried… … Wikipedia