I may be misunderstanding, but I'm not so much concerned with the shape of the image compared to why color arises on the boundary between black and white. I'm aware white light is the combination of colors, but why does this become skewed when black is introduced into the mixture? Part of my...
To clarify, it's simple a white sheet of paper with a black shape (lets just say a circle) printed on it. The opposite case would just be a black piece of paper with a white shape printed on it.
When looking through a triangular prism, I found that a black shape on a white back ground causes the blue end of the spectrum to be on the top of the black shape, and the red/yellow end is directed towards the bottom. The reverse is true for a white shape on a black background. Why is this?