Noun
electrodynamics (uncountable)
(physics) The phenomena associated with moving electric charges, and their interaction with electric and magnetic fields; the study of these phenomena.
The theory of quantum electrodynamics describes Nature as absurd from the point of view of common sense. And it agrees fully with experiment. So I hope you accept Nature as She is - absurd. Richard Feynman
If you have bought one of those T-shirts with Maxwell's equations on the front, you may have to worry about its going out of style, but not about its becoming false. We will go on teaching Maxwellian electrodynamics as long as there are scientists. Steven Weinberg
My complete answer to the late 19th century question, "what is electrodynamics trying to tell us" would simply be this: Fields in empty space have physical reality; the medium that supports them does not. David Mermin
From a long view of the history of mankind - seen from, say, ten thousand years from now - there can be little doubt that the most significant event of the 19th century will be judged as Maxwell's discovery of the laws of electrodynamics. Richard Feynman
A generalized electric scalar potential is also used in electrodynamics when time-varying electromagnetic fields are present, but this can not be so simply calculated. Source: Internet
Definition Quantum electrodynamics (QED) has one electron field and one photon field; quantum chromodynamics (QCD) has one field for each type of quark ; and, in condensed matter, there is an atomic displacement field that gives rise to phonon particles. Source: Internet