Poynting's theorem

proper noun

A statement of conservation of energy for electromagnetic fields, stating that, in a given volume, the stored energy changes at a rate given by the work done on the charges within the volume, minus the rate at which energy leaves the volume.

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Meanings

proper noun
  1. A statement of conservation of energy for electromagnetic fields, stating that, in a given volume, the stored energy changes at a rate given by the work done on the charges within the volume, minus the rate at which energy leaves the volume.

Origin

Developed by British physicist John Henry Poynting.

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Cite this entry
APA

Poynting's theorem. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Poynting's%20theorem

MLA

“Poynting's theorem.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Poynting's%20theorem. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Poynting's theorem,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Poynting's%20theorem.

Source: Poynting's theorem on Wiktionary, CC BY-SA 4.0.