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About: Reciprocity (electromagnetism)     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatPhysicsTheorems, within Data Space : dbpedia.org associated with source document(s)

Type: Thingyago:WikicatCircuitTheoremsyago:WikicatLemmasyago:Abstraction100002137yago:Communication100033020yago:Lemma106751833yago:Message106598915yago:Proposition106750804yago:Statement106722453yago:Theorem106752293yago:WikicatPhysicsTheorems New Facet based on Instances of this Class

In classical electromagnetism, reciprocity refers to a variety of related theorems involving the interchange of time-harmonic electric current densities (sources) and the resulting electromagnetic fields in Maxwell's equations for time-invariant linear media under certain constraints. Reciprocity is closely related to the concept of symmetric operators from linear algebra, applied to electromagnetism. Reciprocity is useful in optics, which (apart from quantum effects) can be expressed in terms of classical electromagnetism, but also in terms of radiometry.