Difference between revisions of "Photons"
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| − | A Photon is a discrete packet of electromagnetic radiation <ref>A French, P Taylor.(1978). A Introduction to Quantum Physics. MIT: CRC Press.</ref> | + | 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> | <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 ([[Joule | + | 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]]s times second) or <math>4.135\times10^{-15}</math>eV s (electron volts times second). |
Revision as of 17:31, July 13, 2016
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:
where f is the frequency of the electromagnetic wave and h is Planck's constant and has the numerical value of Js (Joules times second) or eV s (electron volts times second).
References
- ↑ A French, P Taylor.(1978). A Introduction to Quantum Physics. MIT: CRC Press.