Lustre & Light
Shadows are all around us, we see them almost constantly. But have you stopped to think what exactly they are and how we might define them?
The shadow region receives no direct light from any part of the light source and is the darkest.
The simplest way to describe shadows is as "dark areas where an object blocks the light coming from a particular source".
A shadow shows, apart from the distortion, the same image as the silhouette when looking at the object from the side of the sun, hence the mirror image of the silhouette seen from the other side.
If there are multiple light sources, there will be multiple shadows, darker overlaps, and different combinations of brightness or even colors.
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