quantum theory

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quantum theory

n.
1. A theory in physics based on the principle that matter and energy have the properties of both particles and waves, created to explain the radiation of energy from a blackbody, the photoelectric effect, and the Bohr theory, and now used to account for a wide range of physical phenomena, including the existence of discrete packets of energy and matter, the uncertainty principle, and the exclusion principle.
2. Any of various specific applications of this theory.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

quantum theory

n
(Atomic Physics) a theory concerning the behaviour of physical systems based on Planck's idea that they can only possess certain properties, such as energy and angular momentum, in discrete amounts (quanta). The theory later developed in several equivalent mathematical forms based on De Broglie's theory and on the Heisenberg uncertainty principle. See wave mechanics
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

quan′tum the`ory



n.
1. a theory for predicting the discrete energy states of atoms and of radiation.
2. any theory that describes a force or field using the methods of quantum mechanics: a quantum theory of gravitation.
[1910–15]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

quantum theory

A theory in physics based on the principle that matter and energy behave both as particles and as waves. According to this theory, matter and energy are composed of tiny units of electromagnetic energy called quanta. Quantum theory is used to explain such phenomena as the photoelectric effect and the uncertainty principle. ♦ Another term for quantum theory is quantum mechanics, which also refers specifically to the use of quantum theory in studying the structure and behavior of atoms and molecules.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

quantum theory

The theory that electromagnetic radiation consists of units called quanta or photons.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.quantum theory - (physics) a physical theory that certain properties occur only in discrete amounts (quanta)
scientific theory - a theory that explains scientific observations; "scientific theories must be falsifiable"
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
indeterminacy principle, uncertainty principle - (quantum theory) the theory that it is impossible to measure both energy and time (or position and momentum) completely accurately at the same time
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

quantum theory

n (Phys) → teoria quantistica or dei quanti
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
Using matrix mechanics, equations for determining the kinetic and potential energy are derived.
Bischof et al., "How changes in extracellular matrix mechanics and gene expression variability might combine to drive cancer progression," PLoS One, vol.