Emotion as a scientific analogy

I remember reading about what is known as the visible window in science. This is the window within which visible light can reach the Earth, but other radiation can't, such as X rays. This makes me think of emotion; how about if emotion is like light, and we are living inside of an emotional window, which is life?! Some emotions reach us, while others don't? Because I feel as if I'm living in an extremely limited, perhaps almost nonexistent, window. We are a part of the Universe, and this analogy should remind us of this. If we could somehow reach beyond life itself, then we would be in a far more colorful world. Because life is like an enclosure from which light (happiness) may originate but escapes through windows to the outside, which we can't reach because we're still stuck living in this world. Essentially, I'm talking about the afterlife and I like to think that lost emotion can be regained in what I consider basically the "afterlife".