Electromagnetic wave/Definition: Difference between revisions
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A change, periodic in space and time, of an electric field '''E'''('''r''',t) and a magnetic field '''B'''('''r''',t); a stream of electromagnetic waves, referred to as electromagnetic radiation, can be seen as a stream of massless elementary particles, named photons. | |||
Latest revision as of 16:05, 8 March 2010
A change, periodic in space and time, of an electric field E(r,t) and a magnetic field B(r,t); a stream of electromagnetic waves, referred to as electromagnetic radiation, can be seen as a stream of massless elementary particles, named photons.