S

specular property

The material property that determines how a point of light on a shiny object corresponds to the reflected light source. The specular property of a material is one of two properties that determines how a material reflects light. See also emissive property.

spotlight

A light source that emits a cone of light. Only objects within the cone are illuminated. The cone produces light of two degrees of intensity with a central brightly lit section (the umbra) that acts as a point source, and a surrounding dimly lit section (the penumbra) that merges with the surrounding deep shadow.

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