energy of a quantum

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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 dot display — A quantum dot display is a type of display technology used in flat panel displays as an electronic visual display. Quantum dots (QD) or semiconductor nanocrystals are a form of light emitting technology and consist of nano scale crystals that can …   Wikipedia

• Quantum harmonic oscillator — The quantum harmonic oscillator is the quantum mechanical analogue of the classical harmonic oscillator. It is one of the most important model systems in quantum mechanics because an arbitrary potential can be approximated as a harmonic potential …   Wikipedia

• Energy — This article is about the scalar physical quantity. For other uses, see Energy (disambiguation). Energetic redirects here. For other uses, see Energetic (disambiguation) …   Wikipedia

• Quantum inequalities — IntroductionQuantum inequalities are local constraints on the magnitude and extent of distributions of negative energy density in space time. Initially conceived to clear up a long standing problem in quantum field theory (namely, the potential… …   Wikipedia

• Quantum fluctuation — In quantum physics, a quantum fluctuation is the temporary change in the amount of energy in a point in space, arising from Werner Heisenberg s uncertainty principle.According to one formulation of the principle, energy and time can be related by …   Wikipedia

• quantum — 1. A unit of radiant energy (ε) varying according to the frequency (ν) of the radiation. 2. A certain definite amount. [L. how much] q. mottle q. mottle. See entries under under mottle. q. rectum Q.R. [L. however much is correct] q. satis q.s. [L …   Medical dictionary

• quantum —    a unit of relative energy used in physics. At the small scales studied in particle physics, energy often occurs in discrete packets or units called quanta. The amount of energy in a quantum depends on the frequency of the radiation carrying… …   Dictionary of units of measurement

• Quantum gravity — is the field of theoretical physics attempting to unify quantum mechanics, which describes three of the fundamental forces of nature (electromagnetism, weak interaction, and strong interaction), with general relativity, the theory of the fourth… …   Wikipedia

• Quantum chemistry — is a branch of theoretical chemistry, which applies quantum mechanics and quantum field theory to address issues and problems in chemistry. The description of the electronic behavior of atoms and molecules as pertaining to their reactivity is one …   Wikipedia

• Quantum cascade laser — Quantum cascade lasers (QCLs) are semiconductor lasers that emit in the mid to far infrared portion of the electromagnetic spectrum and were first demonstrated by Jerome Faist, Federico Capasso, Deborah Sivco, Carlo Sirtori, Albert Hutchinson,… …   Wikipedia