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quantum theory - 5 dictionary results
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quantum theory

 
Use quantum theory in a Sentence
–noun Physics.
1. any theory predating quantum mechanics that encompassed Planck's radiation formula and a scheme for obtaining discrete energy states for atoms, as Bohr theory.
2. any theory that treats certain phenomena by the methods of quantum mechanics: a quantum theory of gravitation.
Origin:
1910–15
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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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.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Main Entry: quantum theory
Function: noun
: a theory in physics based on the concept of the subdivision of radiant energy into finite quanta and applied to numerousprocesses involving transference or transformation of energy in an atomic or molecular scale
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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quantum theory n.
The theory that radiant energy is transmitted in the form of discrete units.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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quantum theory  
  1. See quantum mechanics.
  2. Any of various theories that makes use of the assumptions, principles, and laws of quantum mechanics.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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