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Provides light equally from all directions. Light from an ambient source shines equally on all sides of an object. The Position and Direction options are turned off because they are irrelevant.

Point Light

             
Provides light from a selected position. Light from a point source will illuminate each surface of an object depending upon the position of the surface to the light. A surface perpendicular to the light will receive more illumination than a surface that is at an angle. A surface that faces away from the point source will be dark.

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