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Line 1: − '''E = hf'''+ − +
Units of h were wrong. Fixed math formatting.
A Photon is a discrete packet of electromagnetic radiation <ref>A French, P Taylor.(1978). A Introduction to Quantum Physics. MIT: CRC Press.</ref>. It is the elementary exchange particle for the electromagnetic force. The Energy of a photon depends on its frequency and is given by the equation:
A Photon is a discrete packet of electromagnetic radiation <ref>A French, P Taylor.(1978). A Introduction to Quantum Physics. MIT: CRC Press.</ref>. It is the elementary exchange particle for the electromagnetic force. 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 Plank's constant and has the numerical value of 6.626*10<sup>-34</sup>[[Joule|Joules]] or 4.135*10<sup>-15</sup>electron volts (eV).
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 ([[Joule|Joules]] times second) or <math>4.135\times10^{-15}</math>eV s (electron volts times second).