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I NCANDESCENT LIGHT BULB

I NCANDESCENT LIGHT BULB. An  incandescent light bulb ,  incandescent lamp  or  incandescent light globe  is an electric light which produces light…. History

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I NCANDESCENT LIGHT BULB

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  1. INCANDESCENTLIGHTBULB An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light which produces light…

  2. History In addressing the question of who invented the incandescent lamp, historians Robert Friedel and Paul Israel list 22 inventors of incandescent lamps prior to Joseph Swan and Thomas Edison. They conclude that Edison's version was able to outstrip the others because of a combination of three factors: an effective incandescent material, a higher vacuum than others were able to achieve (by use of the Sprengel pump) and a high resistance that made power distribution from a centralized source economically viable.

  3. 1. Outline of Glass bulb 2. Low pressure inert gas (argon, nitrogen, krypton, xenon) 3. Tungsten filament 4. Contact wire (goes out of stem) 5. Contact wire (goes into stem) 6. Support wires (one end embedded in stem; conduct no current) 7. Stem (glass mount) 8. Contact wire (goes out of stem) Cap (sleeve) Insulation (vitrite) 11. Electrical contact

  4. THE LIGHT-BULB is a very useful invention.

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