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Quantum efficiency

(physics) the number of electrons released by a photocell per photon of incident radiation of a given energy
(chem) the number of chemical species that undergo reaction per photon of absorbed radiation of a given energy


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  • Quantum-electrodynamics

    noun, Physics. 1. the quantum field theory that deals with the electromagnetic field and its interaction with electrons and positrons. Abbreviation: QED. noun 1. (physics) a relativistic quantum mechanical theory concerned with electromagnetic interactions QED quantum electrodynamics A quantum field theory of electromagnetism that explains the interactions between electrically charged particles and photons. According to […]

  • Quantum electronics

    noun 1. the application of quantum mechanics and quantum optics to the study and design of electronic devices

  • Quantum-field-theory

    noun, Physics. 1. any theory in which fields are treated by the methods of quantum mechanics; each field can then be regarded as consisting of particles of a particular kind, which may be created and annihilated. noun 1. (physics) quantum mechanical theory concerned with elementary particles, which are represented by fields whose normal modes of […]

  • Quantum flavourdynamics

    noun 1. a gauge theory of the electromagnetic and weak interactions Also called electroweak theory, QFD

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