A shadow is light blocked by an object. The object can block all or part of the light. Shadows change size based on how close they are to the light source.

What is the purpose of a shadow?

But a shadow also implies the presence of light. Shadows form when something gets in the way, blocking the light. Our experiences of shadow aren't limited to the physical world; they can carry into the psychological and spiritual side of life as well.

What is the effect of shadows?

The shadows appear when an object blocks a light source. This effect causes the shape of the object to be projected in shadow form over surfaces opposite the light source. Multiple cast shadows take their shape and interact with each other based on the surfaces and position of the objects upon which they are cast.