Editing Reciprocity (section)

==Physical sciences and engineering==
* [[Reciprocity (engineering)]], used in the analysis of structures and to resolve complex load conditions
* [[Reciprocity (electromagnetism)]], theorems relating sources and the resulting fields in classical electromagnetism
* [[Reciprocity (electrical networks)]], reciprocity theorem as it relates to current and voltage in electrical networks
* [[Reciprocity (network science)]], measures the tendency of vertex pairs to form mutual connections between each other
* [[Reciprocity (optoelectronic)]],  a diode under illumination to the photon emission of the same diode under applied voltage
* [[Reciprocity (photography)]], the relationship between the intensity of the light and duration of the exposure that result in identical exposure
* [[Screw theory#Reciprocity of twist and wrench|Reciprocity of twist and wrench]], in screw theory
* [[Reciprocity theorem (disambiguation)]], several unrelated results
* Reciprocity of [[Antenna (radio)#Reciprocity|antenna]] transmitting and receiving characteristics
* [[Helmholtz reciprocity]], linear propagation.