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Topic: Light bulb

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Fluorescent light

Incandescent light bulb

Electric bulb

Fluorescent lamp

Lightbulb joke

Timeline of lighting technology

Electric light

Thomas Alva Edison

Joseph Wilson Swan

Incandescence

Thomas Edision

	Light bulb - Wikipedia, the free encyclopedia
		The light bulb is one of the most significant inventions in the history of the human race, illuminating the darkness of the evening and bringing light indoors at all times in order focus on the task at hand.
		Originally, artificial light was generated by an open flame – in a rustic torch burning in a wall bracket, a hand-held candle or lantern, and later with natural gas lighting.
		The incandescent light bulb was the first type of modern electric light, introduced in the early 19th Century and still basically inefficient at converting electricity to light.
	en.wikipedia.org /wiki/Light_bulb (1028 words)

	Incandescent light bulb - Wikipedia, the free encyclopedia
		The incandescent light bulb or incandescent lamp is a source of artificial light that works by incandescence, in which an electric current passes through a thin filament, heating it and causing it to emit light.
		The "bulb" is the glass enclosure around the filament that often contains a vacuum or is filled with a low-pressure noble gas to prevent the filament from burning out due to evaporation at the high temperature.
		An incandescent light bulb (about 2.1% efficiency) is about one quarter as efficient as a fluorescent lamp (about 8.2% efficiency), and produces about six times as much heat with the same amounts of light from both sources.
	en.wikipedia.org /wiki/Incandescent_light_bulb (3856 words)

	Light bulb - Wikipedia
		The electric light bulb uses a glowing wire filament heated by electrical resistance to white heat to generate light (a process known as thermal radiation).
		The invention of the light bulb is often attributed to Thomas Alva Edison.
		They built their lamp with a shaped rod of carbon held between electrodes[?] in an glass bulb filled with nitrogen.
	wikipedia.findthelinks.com /el/Electric_light_bulb.html (1286 words)

	The Great Internet Light Bulb Book, Part I
		Since bulbs usually burn out during the current surge that occurs when they are turned on, one would expect that eliminating the surge would save light bulbs.
		You may have heard that the life expectancy of a light bulb is roughly inversely proportional to the 12th or 13th power of the applied voltage.
		Bulbs are so cheap compared to the electricity consumed by them during their lifetime that it pays to make them more efficient by having the filaments run hot enough to burn out after only several hundred to about a thousand hours or so.
	members.misty.com /don/bulb1.html (4582 words)

	How Things Work - Incandescent Light Bulbs
		In this case, the infrared light is emitted by electrons that are shifting from one group of quantum levels in a semiconductor to another group--from conduction levels to valence levels.
		Incidentally, the filament in many incandescent bulbs is treated with a small amount of a phosphorus-based "getter" that reacts with any residual oxygen that may be in the bulb the first time the filament becomes hot.
		Incandescent light is the thermal radiation emitted by a hot object such as the filament of a light bulb or the surface of the sun.
	rabi.phys.virginia.edu /HTW/incandescent_light_bulbs.html (7975 words)

	100-Watt Bulb
		After drying the glass surface of the bulb with ethyl ether swabs, we attempted to attach the suction cup end of the dart to the eletric bulb with cyanoacrylate cement.
		Because this electric bulb was a large object (maximum diameter, 61 mm; length from metal end to top, 114 mm) made of fragile glass, special consideration had to be taken to avoid breakage that would have resulted in lacerations to the rectum and adjacent structures, with consequent complications.
		Should this method be unsuccessful, the sigmoid colon must be opened and the bulb removed through the abdominal incision; however, opening the sigmoid colon is a very lenghy procedure with severe morbidity and a prolonged recovery period,, and this maneuver should be reserved as an extraordinary measure.
	www.well.com /user/cynsa/bulb.html (748 words)

	Light bulb (Site not responding. Last check: 2007-10-22)
		light bulb, light bulbs, led light bulbs, halogen light bulbs, sylvania light bulbs, invention of the light bulb, ge light bulbs, led light bulb, who invented the light bulb, history of the light bulb, full spectrum light bulbs, projector light bulbs, compact fluorescent light bulbs, thomas edison light bulb, phillips light bulbs.
		antique light bulb is the same as 100wfl light bulb without invention of light bulb of broken light bulb Light bulb thomas edison light bulb, the invention of the light bulb both light bulb socket automotive light bulb is light bulb sockets resources.
		Our website sells halogen bulbs etc. fluorescent bulbs is sylvania light bulb, light bulbs, led light bulbs, halogen light bulbs, sylvania light bulbs sealed beam and projector bulb is the same as invented light bulbheadlamps (flower bulbs) lamp.
	zilio.50megs.com (820 words)

	Light Bulb History - Invention of the Light Bulb (Site not responding. Last check: 2007-10-22)
		Between the years 1878 and 1892 the electric light industry was growing in terms of installed lights but shrinking in terms of company competition as both Thomas Edison and George Westinghouse determined to control the industry and its advancement.
		The incandescent light bulb (archaically known as the electric lamp) uses a glowing wire filament heated to white-hot by electrical resistance, to generate light (a process known as thermal radiation or incandescence).
		The bulb is the glass enclosure which keeps the filament in a vacuum or low-pressure noble gas, or a halogen gas in the case of quartz-halogen lamps in order to prevent oxidation of the filament at high temperatures.
	www.ideafinder.com /history/inventions/story074.htm (4338 words)

	Why does a light bulb burn out? (Site not responding. Last check: 2007-10-22)
		The tungsten filament in a modern light bulb is supported by several molybdenum wires.
		The bulb is partially re-evacuated and the lower end of the tube heat-sealed.
		Light is generated in a light bulb when an electric current passes through a filament, which heats the filament white hot.
	invsee.asu.edu /nmodules/lightbulbmod/comp.html (275 words)

	Howstuffworks "How Light Bulbs Work"
		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 modern light bulb, which hasn't changed drastically since Edison's model, is made up of only a handful of parts.
	science.howstuffworks.com /light-bulb.htm (269 words)

	The First True Incandescent Light Bulb
		later, in 1875, Swan returned to consider the problem of the light bulb and, with the aid of a better vacuum and a carbonized thread as a filament (the same material Edison eventually decided upon), he successfully demonstrated a true incandescent bulb in 1878 (a year earlier than Edison).
		why this is of interest to us here is that Edison's experiments with light bulbs led him to discover the Edison Effect, which ultimately led to the invention of the vacuum tube.
		One of it's first uses was for lighting theater stages, and actors and actresses were keen to position themselves "in the limelight" so as to be seen to their best effect.
	www.maxmon.com /1878ad.htm (400 words)

	Lewis Latimer
		The light was composed of a glass bulb which surrounded a carbon wire filament, generally made of bamboo, paper or thread.
		Because he was working at the time for US Electric Lighting Company, he was forced to assign the patent to the company, and thus lost out on the enormous financial rewards which would result.
		Latimer abilities in electric lighting became well known and soon he was sought after to continue to improve on incandescent lighting as well as arc lighting.
	www.blackinventor.com /pages/lewislatimer.html (1023 words)

	Invention of the Light Bulb: Davy, Swan and Edison - EnchantedLearning.com
		Invention of the Light Bulb: Davy, Swan and Edison - EnchantedLearning.com
		The Invention of the Light Bulb: Davy, Swan and Edison
		Lewis Howard Latimer (1848-1928) improved the bulb by inventing a carbon filament (patented in 1881); Latimer was a member of Edison's research team, which was called "Edison's Pioneers." In 1882, Latimer developed and patented a method of manufacturing his carbon filaments.
	www.enchantedlearning.com /inventors/edison/lightbulb.shtml (355 words)

	Light Bulb
		One to screw in the new bulb and four to found an organization for the preservation of the old bulb.
		Twenty-two One to hold the ladder One to climb the ladder Ten to form a committee to evaluate the effectiveness of the old light bulb and Ten to form a committee for a pot-luck to welcome in the new light bulb.
		The Reverend Mother composes a homiliy for the occasion of the light bulb changing while the rest of the nuns raffle-off the old one.
	www.javacasa.com /humor/lightbulb.htm (1788 words)

	Electric light bulb - Incandescent light bulb: Encyclopedia topic
		Harvey Hubbell patents electric light bulb socket with a pull chain August 11, 1896 in history.
		While incandescent light bulbs do use much more electricity than compact fluorescents, what Dr. Prescott chooses to ignore is the quality of the light they
		The carbon filament, which extended the life of the electric light bulb, The electric light bulb was another very important contribution made by Latimer
	light-bulb.directindexes.com /pdrid/light-bulb-electric-light-bulb.htm (480 words)

	kilokat's ANTIQUE LIGHT BULB site
		Currently the antique light bulb forum is home to over 300 members who share the same common interests.
		I'm always happy to help non-collectors who may have found an antique light bulb, but please review the FAQ pages before emailing me about an old light bulb you have come across.
		If your questions are not answered there then feel free to contact me. I do not assign values to old light bulbs but I can help with research if you have an early light bulb that you are interested in learning more about.
	www.bulbcollector.com (564 words)

	The Lightbulb (Site not responding. Last check: 2007-10-22)
		In 1877 Edison announced his invention of a phonograph by which sound could be recorded mechanically on a tinfoil cylinder.
		Two years later he exhibited publicly his incandescent electric light bulb, his most important invention and the one requiring the most careful research and experimentation to perfect (see Electric Lighting).
		This new light was a remarkable success; Edison promptly occupied himself with the improvement of the bulbs and of the dynamos for generating the necessary electric current.
	www.bergen.org /ECEMS/class/light.htm (743 words)

	120V 36-LED Light Bulb (Site not responding. Last check: 2007-10-22)
		Now you can leave lights on without guilt by replacing an ordinary bulb with the 120V 36 LED Light Bulb, a low-energy bulb that provides a high-definition reading light.
		Since it can be run 12 hours a day for a year at a cost of about 80 cents, this LED bulb should last about 10 years, significantly longer than ordinary light bulbs.
		The 120V 36 LED Light Bulb runs on 1.3 watts of electricity and is safe to use outdoors.
	www.smarthome.com /97314a.html (154 words)

	Texans to fete bulb burning for 96 years - Peculiar Postings - MSNBC.com (Site not responding. Last check: 2007-10-22)
		The bulb was first illuminated when a stagehand at a local opera house flicked a switch and posted a sign that the light over a stage entrance was not be turned off.
		The Texas bulb is about 40 watts and made of thick glass that houses a sturdy carbon filament.
		The Texas bulb was touted — wrongly — in the 1930s as the longest-burning bulb in the world.
	www.msnbc.msn.com /id/6056940?GT1=5100 (411 words)

	Lighting fixtures, gu10 halogen, light bulb, lamp, fluorescent, incandescent, metal halide from Light Bulb Depot.
		Lighting fixtures, gu10 halogen, light bulb, lamp, fluorescent, incandescent, metal halide from Light Bulb Depot.
		We sell lighting fixtures, gu10 halogen, light bulb, halogen lamp, fluorescent lamp, incandescent bulb, metal halide, rope light, fllight bulbs, connectors sockets.
		Please check out our inventory of lighting fixtures, gu10 halogen, light bulb, halogen lamp, fluorescent lamp, incandescent bulb, metal halide, rope light, fllight bulbs, connectors sockets and terminal blocks, hid electronic ballasts, 60 watt incandescent bulb, miniature lamp bulb, high pressure sodium light.
	www.lightbulbdepot.com (292 words)

	The History of the light bulb (Site not responding. Last check: 2007-10-22)
		The invention of the incandescent light bulb has a history spanning from the early 1800s.
		Until that time, available light sources consisted of candles, oil lanterns, and gas lamps.
		In 1820, Warren De la Rue made the first known attempt to produce an incandescent light bulb.
	invsee.asu.edu /Modules/lightbulb/meathist.htm (169 words)

	Light Bulb (Site not responding. Last check: 2007-10-22)
		Thomas Edison developed a practical light bulb toward the end of 1879.
		In 1880 he designed this version, the first to have all the essential features of a modern light bulb--an incandescent filament in an evacuated glass bulb with a screw base.
		Light Bulb, 1880, invented by Thomas Edison (1847-1931)
	www.150.si.edu /150trav/remember/r811.htm (101 words)

	Light Bulbs - Light Bulb Manufacturers, Light Bulb Factories, Light Bulb Suppliers, China Light Bulbs
		Manufacturer of light bulbs, decorative light bulbs, halogen lamps, and specialty bulbs.
		Here is your one-stop on-line source for a wide range of lights and lamps.
		"Alibaba Light Bulb" connects you directly to prequalified Light Bulb manufacturers and exporters from China and around the world.
	hotproducts.alibaba.com /manufacturers-exporters/Light_Bulb.html (319 words)

	Invention of the INCANDESCENT LIGHT BULB - EnchantedLearning.com
		The first incandescent electric light was made in 1800 by Humphry Davy, an English scientist.
		Lewis Howard Latimer (1848-1928) improved the light bulb by inventing a carbon filament (patented in 1881); Latimer was a member of Edison's research team, which was called "Edison's Pioneers." In 1882, Latimer developed and patented a method of manufacturing his carbon filaments.
		Label the parts of a modern light bulb.
	www.enchantedlearning.com /inventors/page/i/incandescentbulb.shtml (331 words)

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