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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 (in Joules) depends on its frequency and is given by the equation:
| + | #REDIRECT[[Photon]] |
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| − | '''E = hf'''
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| − | where '''f''' is the frequency of the electromagnetic wave and h = 6.626*10^-34 (Planks constant).
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| − | ==References==
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| − | <references/>
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| − | [[Category:Physics]] | |