Shadow

For other uses, see Shadow (disambiguation).
The shadow of a musician cast onto a brick wall
Park fence shadow is distorted by an uneven snow surface.
Shadows from cumulus clouds thick enough to block sunlight

A shadow is a dark area where light from a light source is blocked by an object. It occupies all of the three-dimensional volume behind an object with light in front of it. The cross section of a shadow is a two-dimensional silhouette, or a reverse projection of the object blocking the light.