A glass bulb with metallic contacts on the outside connected to a wire filament (usually tungsten) inside that emits light when heated by passage of electricity through the filament; -- used as the replaceable light-emitting component of an electric lamp, flashlight, lighting fixture, etc.

Incandescent lighting element, which converts energy, inside a glass container, to light by use of a filament heated by electrical resistance.

commonly used term for any lamp

an EM emmitter

a good example of an isotropic radiator

a good example of a point light

an example of a screw

a useful source for generating underwater sound

a symbol of an idea or a fresh new thought

a burning sun, a baby's head, the moon

a person from conception