Difference between revisions of "Photons"
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| − | A Photon is a quantised 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 | + | A Photon is a quantised 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: |
| − | + | '''E = hf''' | |
| − | where '''f''' is the frequency of the electromagnetic wave and h | + | where '''f''' is the frequency of the electromagnetic wave and h is Plank's constant and has the numerical value of 6.626*10^-34 J*s or 4.135*10^-15 eV*s. |
Revision as of 07:41, March 17, 2007
A Photon is a quantised 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^-34 J*s or 4.135*10^-15 eV*s.
References
- ↑ A French, P Taylor.(1978). A Introduction to Quantum Physics. MIT: CRC Press.