Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Incandescent light bulb


Related Topics
LED

  
  incandescent, incandescent light bulb, incandescent lamp, incandescent light, incandescent bulb, incandecsnt light ...
Halogen bulbs are technically incandescent light bulbs - illumination is produced in both when a tungsten filament is heated sufficiently to emit light or "incandescence." The difference between the two is in the composition of the glass envelope and the gas inside the envelope.
When the tungsten filament is heated it evaporates and deposits metal on the cooler glass envelope (this is why incandescent bulbs appear fl at the end of life).
This process requires incandescent bulb filaments to be heated less than optimally to give the bulb a reasonable life.
www.topbulb.com /find/incandescent.asp   (611 words)

  
 ipedia.com: Incandescent light bulb Article
The incandescent 'light bulb uses a glowing wire filament heated to white-hot by electrical resistance, to generate light (a process known as thermal radiation).
The invention of the light bulb is sometimes attributed to Thomas Alva Edison, who made contributions to its development and marketing, but today it is well-known that Heinrich Göbel built functional bulbs three decades earlier.
The incandescent light bulb is still widely used in domestic applications, and is the basis of most portable lighting (for instance, some car headlamps and electric torcheses).
www.ipedia.com /incandescent_light_bulb.html   (2593 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   (8053 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   (4592 words)

  
 Temperature of an Incandescent Light Bulb
Incandescent lamps are based on the principle of incandescence, which states that solids and gases emit visible light when heated to a high enough temperature.
The bulb consists of a filament positioned inside a glass bulb filled surrounded by an inert gas.
The filament is a piece of thin coiled wire and is part of the light bulb that produces the light and is usually made out of tungsten -- a material that can withstand incredibly high temperatures without melting.
hypertextbook.com /facts/1999/AlexanderEng.shtml   (356 words)

  
 Incandescent light bulb - Wikipedia, the free encyclopedia
Halogen bulbs are widely used in automobile headlamps, for example, and because headlamps often contain plastic parts, halogen headlamp bulbs' envelopes are made out of hard glass, or out of quartz 'doped' with additives to block most of the UV output (hard glass blocks UV without need of dopants).
Incandescent lamps can usually be replaced by self-ballasted compact fluorescent light bulbs, which fit directly into standard sockets (but often contain mercury).
Incandescent light bulbs are usually marketedaccording to the electrical powerconsumed.
en.wikipedia.org /wiki/Incandescent_light_bulb   (5464 words)

  
 Coalition Calls for End of Incandescent Light Bulb | LiveScience
The newly formed Lighting Efficiency Coalition, which includes companies such as Philips Lighting, environmental groups such as the Earth Day Network, and elected officials, is pushing for a "sweeping transformation of the U.S. marketplace towards energy efficient lighting products by the year 2016," said coalition member Sen.
Incandescent bulbs currently consume 42 percent of the
light emitting diodes (LEDs), which require less electricity to produce the same amount of light as an incandescent bulb.
www.livescience.com /environment/070315_efficient_bulbs.html   (588 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.
Light is a form of energy that can be released by an atom.
home.howstuffworks.com /light-bulb.htm   (646 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)

  
 Light bulbs, Rope Lights, Halogen and Fluorescent bulb - 1000-Bulbs - The Light Bulb Superstore
We specialize in providing compact fluorescent light bulbs (CFL), rope lights, halogen bulbs, and Christmas lights to both commercial and residential customers.
When buying light bulbs or lighting products for a home or business, in the US or abroad, rely on us for all your lighting needs.
Just think, if every American home replaced just one light bulb with an ENERGY STAR qualified bulb, we would save enough energy to light more than 3 million homes for a year, more than $600 million in annual energy costs, and prevent greenhouse gases equivalent to the emissions of more than 800,000 cars.
www.1000bulbs.com   (298 words)

  
 "inQuiry Almanack" - inQuiry Attic - December, 1998
Incandescent lamps make light by using electricity to heat a thin strip of material (called a filament) until it gets hot enough to glow.
Many inventors had tried to perfect incandescent lamps to "sub-divide" electric light or make it smaller and weaker than it was in the existing arc lamps, which were too bright to be used for small spaces such as the rooms of a house.
Even though he didn't dream up the first light bulb ever crafted, and technology continues to change every day, Edison's work with light bulbs was a spark of brilliance on the timeline of invention.
sln.fi.edu /qa98/attic12/attic12.html   (1271 words)

  
 Illinois Light Bulb Company Light Bulb Manufacturer - Aero-Tech Light Bulb Co.
Aero - Tech Light Bulb Co. was founded in 1987 by Ray M. Schlosser as a specialty lighting company.
Aero-Tech Light Bulb Company is the only manufacturer of 20,000 hour rated, long-life incandescent bulbs left in America today.
On October 19, 1879, Thomas Edison invented the first working light bulb and it lasted for forty hours.
www.aerolights.com /about.asp   (390 words)

  
 The History of the light bulb
The invention of the incandescent light bulb has a history spanning from the early 1800s.
In 1809, an English chemist, Humphrey Davy, started the journey to the invention of a practical incandescent light source.
The current flowing through the two charcoal strips produced an intense incandescent light, creating the first arc lamp.
invsee.asu.edu /Modules/lightbulb/meathist.htm   (169 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)

  
 Sylvania's entire catalog of incandescent light bulbs, fluorescent light bulbs, hid light bulbs, fixtures and ...
Sylvania's entire catalog of incandescent light bulbs, fluorescent light bulbs, hid light bulbs, fixtures and flashlights
150 watt 120 volt PS25 Medium Base Safeline Incandescent Sylvania Light Bulb
200 watt 130 volt PS30 Medium Base Clear Incandescent Sylvania Light Bulb
www.sylvanialightbulbs.com /sitemap.html   (11215 words)

  
 First Public Demonstration of Edison's Light Bulb
Thomas Edison's electric lamp patent drawing and claim for the incandescent light bulb
But platinum was too expensive, so instead they found that a carbon filament provided a good light at a cheaper price.
Although there were problems with the early incandescent lighting systems for years, Edison's reputation as the world's greatest inventor was firmly established.
www.americaslibrary.gov /cgi-bin/page.cgi/jb/gilded/edison_3   (106 words)

  
 Light Bulb   (Site not responding. Last check: )
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)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.