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What year was Electric Lamp invented and how?
What year was Electric Lamp invented and how?
1 Answer
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An incandescent light bulb, lamp, or globe is an electric light
that has a wire filament that has been heated till it glows. To protect the filament from oxidation, it is encased in a glass bulb with a vacuum or inert gas. Terminals or wires inserted in the glass provide current to the filament. A bulb socket provides both mechanical and electrical support.
Incandescent bulbs
come in a variety of diameters, light outputs, and voltage ratings, ranging from
1.5 to 300 volts. They don't need any external regulating equipment, have cheap production costs, and work on both alternating and direct current.
As a result, the incandescent bulb found widespread application in residential and
commercial lighting, as well as portable lighting such as table lamps,
automotive headlamps, and flashlights, as well as decorative and advertising lighting. Prior to
Joseph Swan and Thomas Edison, historians Robert Friedel and
Paul Israel mention inventors of incandescent lamps.
They find that Edison's version outperformed the competition due to a combination of three factors: an effective incandescent substance, a higher vacuum than the competition, and a high resistance that allowed power distribution from a centralized source economically viable.
Edison's success, according to historian Thomas Hughes, was due to his creation of a full, integrated system of
electric illumination.
