Definitions for "ARTIFICIAL LIGHT"
Light from an electric light or flash unit. The opposite of artificial light is natural light.
Man-made illumination not limited to the indoor variety: fluorescent bulbs, jack-o'-lantern, or car headlights. It usually has lower color temperature than natural light, thus more reddish qualities. (See color temperature, natural light).
light from an electric lamp, a flash bulb, or electronic flash.  Often describes lights the photographer has set up to illuminate a scene