Incandescent

a.
  1. White, glowing, or luminous, with intense heat; as, incandescent carbon or platinum; hence, clear; shining; brilliant.
    2. Incandescent lamp, Incandescent light, Incandescent light bulb (Elec.),
    a kind of lamp in which the light is produced by a thin filament of conducting material, now usually tungsten, but originally carbon, contained in a vacuum or an atmosphere of inert gas within a glass bulb, and heated to incandescence by an electric current. It was inventerd by Thomas Edison, and was once called the Edison lamp; -- called also incandescence lamp, and glowlamp. This is one of the two most common sources of electric light, the other being the fluorescent light, fluorescent lamp or fluorescent bulb.