Poynting theorem


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Related to Poynting theorem: Maxwell's equations

Poynting theorem

(ˈpɔɪntɪŋ)
n
(General Physics) the theorem that the rate of flow of electromagnetic energy through unit area is equal to the Poynting vector, i.e. the cross product of the electric and magnetic field intensities
[C19: named after John Henry Poynting (1852–1914), English physicist]
References in periodicals archive ?
It will be shown that in the far zone, where radiative EM fields prevail, the generalized EM energy-momentum tensor yields the standard continuity equation (Poynting theorem), hence implying equal propagation (retardation) rates for both bound and radiative EM field components.
* physicist John Henry Poynting, developer of the Poynting Vector and the Poynting Theorem of energy conservation for electric and magnetic fields
The Poynting theorem, which represents the energy conservation law is given by (Griffiths, 1999 [4])