quantum mechanics

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• quantum mechanics — quantum mechanical, adj. Physics. a theory of the mechanics of atoms, molecules, and other physical systems that are subject to the uncertainty principle. Abbr.: QM Cf. nonrelativistic quantum mechanics, relativistic quantum mechanics. [1920 25]… …   Universalium

• quantum mechanics — Quantum theory, introduced by Max Planck (1858–1947) in 1900, was the first serious scientific departure from Newtonian mechanics. It involved supposing that certain physical quantities can only assume discrete values. In the following two… …   Philosophy dictionary

• quantum mechanics — n pl but sing or pl in constr a theory of matter that is based on the concept of the possession of wave properties by elementary particles, that affords a mathematical interpretation of the structure and interactions of matter on the basis of… …   Medical dictionary

• quantum mechanics — n. [with sing. v.] a physical theory that describes the motion of objects by the principles of quantum theory …   English World dictionary

• quantum mechanics — ► PLURAL NOUN (treated as sing. ) ▪ the branch of physics concerned with describing the behaviour of subatomic particles in terms of quanta, incorporating the idea that particles can also be regarded as waves …   English terms dictionary

• Quantum mechanics — For a generally accessible and less technical introduction to the topic, see Introduction to quantum mechanics. Quantum mechanics …   Wikipedia

• quantum mechanics — A generally accepted theory replacing classical mechanics for microscopic phenomena. Quantum mechanics also gives results consistent with classical mechanics for macroscopic phenomena. Two equivalent formalisms have been developed: matrix… …   Dictionary of automotive terms

• quantum mechanics — kvantinė mechanika statusas T sritis chemija apibrėžtis Mokslas, tiriantis mikroobjektų judėjimą jėgų laukuose. atitikmenys: angl. quantum mechanics rus. квантовая механика …   Chemijos terminų aiškinamasis žodynas

• quantum mechanics — kvantinė mechanika statusas T sritis fizika atitikmenys: angl. quantum mechanics vok. Quantenmechanik, f rus. квантовая механика, f pranc. mécanique quantique, f …   Fizikos terminų žodynas

• quantum mechanics — quantum me chanics n [U] the scientific study of the way that atoms and smaller parts of things behave …   Dictionary of contemporary English

• quantum mechanics — quantum me chanics noun uncount the science that deals with the structure and behavior of the PARTICLES of an atom and the energy they produce …   Usage of the words and phrases in modern English