Radiant energy

In continuation of the topic about the experiment put by Newton, my photo of the rays. They certainly are not colored, because the prism is not the same. But the rays can be seen. They seem to be real and existing pierce the clouds. But in reality it's not a ray that shines, but a substance that meets on its way. And immediately a question. Logically, after the substance there should be a shadow, because the light does not pass through the substance. Why then it is light. And the question is if the light reflects the matter. And let's say that our substance is transparent. Depending on the speed and direction, the solar intensity must change. Since the motion of a substance with a certain velocity, will be a density, with respect to the rays of light.