Topic: Tungsten Filament Lamp
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Who invented the tungsten filament lamps?
Thomas Edison It was actually Irving Langmuir (of General Electric), also an American. Edison's incandescent lamp used a carbon filament, as did that of his contemporary, England's Joseph Swan who got there before Edison (who invented a lon... Read More »
Source: http://wiki.answers.com/Q/Who_invented_the_tungsten_filament_lamp...
Why is tungsten used in electric filament lamps?
/ Answer because of the high melting point Read More »
Source: http://wiki.answers.com/Q/Why_is_tungsten_used_in_electric_filame...
Why tungsten is used as filament in lamps?
High resistance to current as well as a high boiling point. This means that the filament lasts longer than any other common material. Read More »
Source: http://answers.yahoo.com/question/index?qid=20070924025242AAoGF7Y
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Tungsten Filament Lamp
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The essential qualities that make tungsten suitable for this application are:- 1) it is a metal of moderate resistivity with a very high melting point, so it may be heated electrically to a temperature at which it radiates a reasonable prop...
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Source: http://answers.yahoo.com/question/index?qid=20081027084444AAjx884
It's not generated, resistance is not generated, it just is, it's a property of the material and it's dimensions. The filament is a very fine tungsten wire wound is a double spiral. Because it's so thin, it has a relatively high resistance.
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Source: http://answers.yahoo.com/question/index?qid=20111014081652AASCgyC
( ′təŋ·stən ′fil·ə·mənt ) (electricity) A filament used in incandescent lamps, and as an incandescent cathode in many types of electron tubes, such as thermionic vacuum tubes.
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Source: http://www.answers.com/topic/tungsten-filament
( ′thör·ē′ād·əd ¦təŋ·stən ′fil·ə·mənt ) (electronics) A vacuum-tube filament consisting of tungsten mixed with a small quantity of thorium oxide to give improved electron emission. Also known as thoriated emitter.
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Source: http://www.answers.com/topic/thoriated-tungsten-filament
Tungsten is a very tough metal that can be formed into a thin filament with a very high resistance to the flow of electrical energy. The tungsten will incandesce (glow) very hot without melting. Copper and aluminum (and other good metal con...
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Source: http://answers.yahoo.com/question/index?qid=20071201050456AAfS71j
The main difference is heat generated. As carbon heats up, it actually speeds up the flow of electrons. This is why light bulbs use carbon filaments. Tungsten on the other hand, has the same property values as carbon except that it lasts lo...
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Source: http://answers.yahoo.com/question/index?qid=20090322073512AAcdWT9
