单词 | Poynting theorem |
释义 | Poynting theorem(ˈpɔɪntɪŋ) noun 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 origin C19: named after John Henry Poynting (1852–1914), English physicist |
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