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→The Speed of Light
Where
<math>c =</math> The speed of [[light]] (<math>3.00\times10^{8}ms^{-1}</math> in a [[vacuum]]).
<math>\lambda =</math> The [[wavelength]] of the [[Electromagnetic Wave|wave]] associated with the '''photon'''.
<math>f =</math> The [[frequency]] of the [[Electromagnetic Wave|wave]] associated with the '''photon'''.