Poynting theorem

/ ˈpɔɪntɪŋ /

noun

1. 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

Word History and Origins

Origin of Poynting theorem¹

C19: named after John Henry Poynting (1852–1914), English physicist