Topic: Tungsten Light Bulbs
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What Is a Tungsten Light Bulb?
A tungsten light bulb refers generally to incandescent light bulbs, which are lights that generate light by heating a metal wire or filament with electricity until it becomes white hot and glows. Read More »
Source: http://www.ehow.com/about_5325555_tungsten-light-bulb.html
Why Is Tungsten Used in Light Bulbs?
This silver-white metal is both strong and durable, as well as malleable and elastic. On one hand, when combined with other metals, tungsten can be fabricated into tough, high-speed cutting tools (i.e., table-saw blades), or sturdy drill bi... Read More »
Source: http://www.ehow.com/about_6465220_tungsten-used-light-bulbs_.html...
Why are light bulbs made of tungsten?
Edison tried many different materials to invent a light bulb that works. After 1,000 failures he finally found tungsten worked best. Read More »
Source: http://wiki.answers.com/Q/Why_are_light_bulbs_made_of_tungsten
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Tungsten Light Bulbs
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Answers to Other Common Questions
Tungsten is used because it has a high melting point and retains its strength in temperature extremes.
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Source: http://wiki.answers.com/Q/Why_is_tungsten_used_in_light_bulb_fila...
Tungsten is used because it has the highest melting point of all the metallic elements. It melts at 3410 degrees Celsius. When current passes through the filament it heats it up. When the filament reaches a certain temperature it starts to ...
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Source: http://wiki.answers.com/Q/Why_is_Tungsten_used_to_make_the_filame...
Because of the heat, out of all the metals, tungsten has the highest melting point.
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Source: http://wiki.answers.com/Q/Why_are_light_bulb_filaments_made_out_o...
because it is metal with very high melting point
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Source: http://answers.yahoo.com/question/index?qid=20101028142108AACanoM
The resistance of a tungsten light bulb is greater than the resistance of a copper wire. In addition, as the bulb get hotter, the resistance increases, due to the positive resistance to temperature coefficient of the filament.
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Source: http://wiki.answers.com/Q/How_does_the_resistance_of_a_tungsten_l...
it have high resistivity as well as high melting point. So due to high resistivity collision of moving electrons are taken place. It emits radiation which is appear as light.
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Source: http://wiki.answers.com/Q/What_property_does_the_metal_tungsten_o...
