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An electromagnetic eld is a physical eld produced by electrically charged objects. It a ects the behavior of charged objects in the vicinity of the eld. The electromagnetic eld extends inde nitely throughout space and describes the electromagnetic interaction. The eld can be viewed as the combination of an electric eld and a magnetic eld. The electric eld is produced by stationary charges, and the magnetic eld by moving charges; these two are often described as the sources of the eld. The way in which charges and currents interact with the electromagnetic eld is described by Maxwell's equations and the Lorentz force law. From a classical perspective in the history of electromagnetism, the electromagnetic eld can be regarded as a smooth, continuous eld, propagated in a wavelike manner; whereas from the perspective of quantum eld theory, the eld is seen as quantized, being composed of individual particles.
