Unfortunately, I have not been yet not only executing but I have never seen any experiment which has been carried out with a light or other particle radiation. So I am relying on solely my readings for imagining the light radiation which is an every-day experience for everybody. There is large literature on this subject, and I have read a lot - but not enough - on this subject.
Light - or, more generally, electromagnetic radiation, and what is more particles1 as well - can sometimes behave like particles and sometimes as a wave. Of course to the understanding of this assertion we need to know the meaning of the wave- and particle-behavior. The electromagnetic radiation is not accidentally a complex phenomenon, since it is able to supply all the information that we know about the distant universe, and about the microcosm. This vast amount of information could not be delivered via “simple media”.
Before dealing with the double-slit experiment, I would like to summarize my problems related to electromagnetic radiation. What does one photon mean?
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1 The phenomenon is thought to be true for all objects, but it is only detected on atomic scale.
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