Poynting's theorem

noun Poyn·ting's theorem \ˈpȯintiŋz-\

Definition of Poynting's theorem

  1. :  a statement in electromagnetic theory: the transfer of energy by an electromagnetic wave is at right angles to both electric and magnetic components of the wave vibration and its rate is proportional to the vector product of their amplitudes

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of poynting's theorem

after John H. Poynting †1914 English physicist, its originator

Seen and Heard

What made you want to look up Poynting's theorem? Please tell us where you read or heard it (including the quote, if possible).


to criticize severely

Get Word of the Day daily email!