Photons

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A Photon is a discrete packet of electromagnetic radiation [1]. 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:

E = hf

where f is the frequency of the electromagnetic wave and h is Planck's constant and has the numerical value of 6.626\times10^{-34}Js (Joules times second) or 4.135\times10^{-15}eV s (electron volts times second).


References

  1. A French, P Taylor.(1978). A Introduction to Quantum Physics. MIT: CRC Press.
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