Both natural and artificial light can also disrupt the human body clock and the hormonal system, and this can cause health problems. The artificial light reflects off low clouds, or moisture and dust in the air, creating "sky glow," says Travis Longcore, an ecologist with the Urban Wildlands Group, a conservation organization in Los Angeles, California. Lights out : city lights are erasing the stars, wasting energy, and hurting wildlife. Today however, the term 'artificial lighting' generally refers to lighting that emanates from electric lamps. Artificial light is composed of visible light as well as some ultraviolet (UV) and infrared (IR) radiations, and there is a concern that the emission levels of some lamps could be harmful for the skin and the eyes. Definition of artificial light : light produced by electric lamps photographs made under artificial light Learn More about artificial light Artificial lights are available in a wide variety of shapes, sizes, colors of light emitted, and levels of brightness. Artificial light, as opposed to natural light, refers to any light source that is produced by electrical means. n (Physics) artificial light having approximately the same spectral characteristics as natural daylight artificial disintegration n (Physics) radioactive transformation of a substance by bombardment with high-energy particles, such as alpha particles or neutrons The term ‘ lamp ’ refers specifically to a light source, typically comprising a light -emitting element contained within an outer container (bulb or tube) which emits radiation within the visible spectrum . Artificial lighting has many different applications and is used both in home and commercially.