an electric lamp consisting essentially of a glass or quartz bulb evacuated or filled with an inert gas in which a filament, commonly of tungsten, gives off light when it is heated to incandescence by an electric current
a light source that generates light utilizing a thin filament wire (usually of tungsten) heated to white heat by an electric current passing through it
n. An electric lamp in which a filament is heated to incandescence by an electric current. Any of various devices that produce light by heating a suitable material to a high temperature. In an electric incandescent lamp, or lightbulb, a filament is enclosed in a glass shell that is either evacuated or filled with an inert gas. The filament gives off light when heated by an electric current. The first practical electric incandescent lamps were independently produced in the late 1870s by Joseph Swan and Thomas Alva Edison. Edison has received the major credit because of his development of the power lines and other equipment needed for a lighting system. Inefficient in comparison with fluorescent lamps and electric discharge lamps, incandescent lighting is today reserved mainly for domestic use. See also halogen lamp
A lamp that produces light by directing electrical current through a metallic medium The efficiency of lamps is stated as an efficacy rating (lumens/input wattage) For example, a 100-watt lamp that produces 1,740 lumens has an efficacy of 17 4 lumens per watt The average incandescent lamp typically falls in the 10-25 lumens per watt range
A light source which generates light utilizing a thin filament wire (usually of tungsten) heated to white heat by an electric current passing through it
(Also known as a Filament Lamp or "Bulb") A lamp in which light is produced by a filament heated to incandescence by the flow of electric current through it The filament is usually of tungsten wire and operates in the range of 4000 degrees fahrenheit Incandescent lamps come in many sizes, wattages and shapes, in clear, frosted or white coated bulbs, and are available in many special types for particular applications such as reflectorized lamps (R or PAR types), or silvered bowl lamps
lamp in which light is produced by means of an element heated to the point of incandescence by the passage of an electric current To learn more about this topic click on this link: Lamps / Light Bulbs back to top