

The word "shadow" exists on a grand scale of usages. As a noun, a shadow is light veiled. The truth of the matter is that there needs to be visible light for the shadow to exist. One would not call the room that was all dark a "shadowed room"; the room would simply have the lack of light, or, it would be dark. If suddenly a candle appeared, supported by the accuser- the one who called this room dark, he would now attempt to describe how this area was in the light and this area was in the shadow, or, I believe, "in the shadows". We've come to know this specific type of dark as the shadow.
For literary uses of the word (shadow is the word I'm referring to), it still can exist as a noun, but becomes even more as a (almost) tangible entity. The shadow suggests much more than the contrast of the presence of light juxtaposed against the lack of it. Usually in films and books, an ominous force exists
inside of it. Now we have a situation where one can be inside the shadow, giving it more physical properties of volume, depth. It must occupy space in order for something to be inside it. What we are talking about here is the lack of light being a presence. The lack of light that only exists in presence of light in close proximity, or shadow, demands our attention. We must take notice of this. On the opposing side, the cave, almost completely in darkness has one stream of light coming through. Is there a word for this, as concrete as shadow? Not to my understanding of the English language. Perhaps the Russians have a word for it. This image invokes thoughts of God and religion. "God Rays" is what this is called while coming through a cloud. A very simple line can be drawn here. While God shoots us with light, things lurk in the shadows.
Do you see what I am saying?
Even the best scientists are not sure what light is. Light, according to them, exhibits characteristics of both waves and particles. Particles are the little tiny things that compose our universe and all
tangible matter. Waves are comprised of energy, and no matter how many waves there are, one could never pick a mass of them up, for they have no mass. But do bare in mind, waves can affect objects with mass. Thousands of people died at Chernobyl, not because of explosions, but because of radioactive waves.
How can light be BOTH waves and particles. Sometimes we can touch it sometimes we can not? If I were to have a better scientific understanding of things, possibly I could explain this to you here, but this is a baffling idea. Taking this- this idea of not understanding what light even is, how could we say what the lack of light is; what the shadow is. Who are we to decide what to consider dark, what to consider a shadow and what to consider light when the best scientists of our time can't even describe to me concretely what this "thing" is that we are even talking about. The only shadow I know anything about is the figurative shadow. "Living in someone's shadow." This can be described very easily. The figurative idea of the shadow is more concrete than the literal and physical form of the word. And yet, we all know shadow when we see it.