Difference between revisions of "Photons"
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'''E = hf''' | '''E = hf''' | ||
| − | where '''f''' is the frequency of the electromagnetic wave and h is Plank's constant and has the numerical value of 6.626*10 | + | 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). |
Revision as of 01:05, August 27, 2007
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 Plank's constant and has the numerical value of 6.626*10-34Joules or 4.135*10-15electron volts (eV).
References
- ↑ A French, P Taylor.(1978). A Introduction to Quantum Physics. MIT: CRC Press.