quantum electrodynamics
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noun Physics.
the quantum field theory that deals with the electromagnetic field and its interaction with electrons and positrons. Abbreviation: QED
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Origin of quantum electrodynamics
First recorded in 1925–30
Words nearby quantum electrodynamics
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for quantum electrodynamics
British Dictionary definitions for quantum electrodynamics
quantum electrodynamics
noun
physics a relativistic quantum mechanical theory concerned with electromagnetic interactionsAbbreviation: QED
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Scientific definitions for quantum electrodynamics
quantum electrodynamics
A quantum field theory of electromagnetism that explains the interactions between electrically charged particles and photons. According to quantum electrodynamics, charged particles interact with one other by emitting or absorbing photons, which are the carriers of the electromagnetic force. Quantum electrodynamics correctly predicts such phenomena as the structure of atoms, and the creation and annihilation of particles (for example, when matter and antimatter collide). Quantum electrodynamics is one of the most well-tested, accurate, and successful theories in physics.
The American Heritage® Science Dictionary
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