Definition of quantum electrodynamics in English:

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quantum electrodynamics

plural noun

[treated as singular]
A quantum field theory that deals with the electromagnetic field and its interaction with electrically charged particles.
Example sentences
  • Further understanding led to the development of relativistic quantum field theory, beginning with quantum electrodynamics, or QED for short, pioneered by Feynman, Schwinger and Tomonaga in the 1940s.
  • For this reason physicists sought the quantum theory of electromagnetism or quantum electrodynamics.
  • How well verified is the theory of quantum electrodynamics?
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