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Before the invention of the light bulb, illuminating the world after the sun went down was a messy, arduous, hazardous task. It took a bunch of candles or torches to fully light up a good-sized room, and oil lamps, while fairly effective, tended to leave a residue of soot on anything in their general vicinity. ... The Filament...
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home.howstuffworks.com/light-bulb.htm
home.howstuffworks.com/light-bulb.htm
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The filament inside a light bulb is made of tungsten because it has an unusually high melting point. Learn about the filament and find out how the filament emits light. ... The filament in a light bulb is housed in a sealed, oxygen-free chamber to prevent combustion. In the first light bulbs, all the air was sucked out of...
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home.howstuffworks.com/light-bulb2.htm
home.howstuffworks.com/light-bulb2.htm
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Much later, in 1860, the English physicist Sir Joseph Wilson Swan (1828-1914) was determined to devise a practical, long-lasting electric light. He found that a carbon paper filament worked well, but burned up quickly. ... Lewis Howard Latimer (1848-1928) improved the bulb by inventing a carbon filament (patented in 1881);
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www.enchantedlearning.com/inventors/edison/lightbulb.sh...
www.enchantedlearning.com/inventors/edison/lightbulb.shtml
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The light was composed of a glass bulb which surrounded a carbon wire filament, generally made of bamboo, paper or thread. When the filament was burned inside of the bulb (which contained almost no air), it became so hot that it actually glowed.
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www.blackinventor.com/pages/lewislatimer.html
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Did you know that Thomas Edison experimented for two years to find a suitable material for a light bulb filament? His first successful light bulb used a filament made from burned sewing thread. Tungsten, which has the highest melting point of all metals, proved far more durable.
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www.mailtribune.com/archive/2000/april/041900n6.htm
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Also investigate the broader Interactive Temperature Scales which range up to and beyond typical light bulb filament operating temperatures.
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invsee.asu.edu/Modules/lightbulb/filament.htm
invsee.asu.edu/Modules/lightbulb/filament.htm
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This image is a close up of a tungsten light bulb filament. Two of the important and interesting features depicted in the photo are grain boundary oxidation and recrystalization. ... To learn more about tungsten light bulb filaments please go to the Why Does a Light Bulb Burn Out? module on this site.
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invsee.asu.edu/ImageGallery/Real/PhysicalSciences/em/tu...
invsee.asu.edu/ImageGallery/Real/PhysicalSciences/em/tungsten/W-crystall.html
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At last a metal – tungsten – was found which would work well if all the air was taken out of the bulb so it would not burn, but it gets soft when it is hot, so even today shaking a light-bulb when it is hot makes it fail. ... Filament in early light-bulb...
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www2.warwick.ac.uk/fac/soc/wie/eubuildit/fortifications...
www2.warwick.ac.uk/fac/soc/wie/eubuildit/fortifications/warwick/change/1898/electric/filament/
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In 1903 Willis Whitnew invented a filament that would not blacken the inside of a light bulb. It was a metal-coated carbon filament. In 1906, the General Electric Company was the first to patent a method of making tungsten filaments for use in incandescent light bulbs.
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www.ideafinder.com/history/inventions/lightbulb.htm
www.ideafinder.com/history/inventions/lightbulb.htm
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