Definition Edit

An electromagnetic field is

the field of force associated with electric charge in motion that has both electric and magnetic components and contains a definite amount of electromag­netic energy. Speakers and radio transmitters . . . are examples of devices that produce electromagnetic fields.[1]

References Edit

  1. U.S. Department of Justice, National Institute of Justice, Electronic Crime Scene Investigation: A Guide for First Responders 53 (2d ed. Apr. 2008) (full-text).

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