On Sunday, July 22, 2012 5:36:52 AM UTC-5, Szczepan Bialek wrote:
Where can I find the knowledge on photons?

Here's a pretty good overview:

http://en.wikipedia.org/wiki/Light_quantum

For information on EM radiation, superposition, and interference, I would recommend:

"Optics", 4th edition, by Eugene Hecht, available from www.abebooks.com
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73, Cecil, w5dxp.com