Dictionary:Reciprocity principle

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{{#category_index:R|reciprocity principle}} 1. The potential at a point M with respect to a current source at A is the same as if the points of measurement and source were reversed. Applied in electrical exploration. 2. The seismic trace from a source at A to a geophone at B is the same as from a source at B to a geophone at A if sources and receivers are similarly coupled to the Earth. For converted waves, reciprocity requires interchanging the motion senses of the sources/receivers as well as their locations. See Dellinger and Nolte (1997).