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Photon
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In standard interpretations of quantum mechanics, light behaves both as a wave and as a particle. The existence of photons is now well accepted by the physics community, and its implication has gone well beyond the photoelectric effect. ==Physics of photons==The Energy of a photon depends on its frequency and is given by the equation: <math>E = hf</math> where ''f'' is the frequency of the electromagnetic wave and ''h'' is Planck's constant and has the numerical value of <math>6.626\times10^{-34}</math>Js ([[category:Joule]]s times second) or <math>4.135\times10^{-15}</math>eV s (electron volts times second).The [[momentum (physics)|momentum]] of a photon can be expressed as:<math>E = pc</math> ==References==<references/> ==See also==*[[Optics#Physical optics|Interference]] [[Category:Particle Physics]]