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An ENERGY STAR qualified compact fluorescent light bulb (CFL) will save about $30 over its lifetime and pay for itself in about 6 months. It uses 75 percent less energy and lasts about 10 times longer than an incandescent bulb.
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www.energystar.gov/index.cfm?c=cfls.pr_cfls
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The light bulb hasn't changed a whole lot in its 120 years -- the original design was just that good. Learn all about the light bulb. ... 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...
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home.howstuffworks.com/light-bulb.htm
home.howstuffworks.com/light-bulb.htm
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Fascinating facts about the invention of the light bulb by Thomas Alva Edison in 1879. ... The light bulb, in particular, profoundly changed human existence by illuminating the night and making it hospitable to a wide range of human activity. The electric light, one of the everyday conveniences that most affects our lives,
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www.ideafinder.com/history/inventions/story074.htm
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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.
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www.150.si.edu/150trav/remember/r811.htm
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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 1809, an English chemist, Humphrey Davy, started the journey to the invention of a practical incandescent light source.
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invsee.asu.edu/Modules/lightbulb/meathist.htm
invsee.asu.edu/Modules/lightbulb/meathist.htm
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Davy, Swan and Edison: Invention of the Light Bulb. Also, see the parts of a light bulb. ... The first electric light was made in 1800 by Humphry Davy, an English scientist. He experimented with electricity and invented ... 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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Thomas Edison held a world record of 1093 patents for inventions such as the lightbulb and phonograph - Thomas Edison biography and timeline. ... There are a couple of other interesting things about the invention of the light bulb: While most of the attention was on the discovery of the right kind of filament that would...
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inventors.about.com/library/inventors/bledison.htm
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Think back. Who invented the light bulb? Thomas Edison? Right? ... Thus the electric light bulb became American. ... 1835 - James Bowman Lindsay demonstrated constant electric lighting system using a prototype light bulb. 1850 - Edward Shepard invented an electrical incandescent arc lamp using a charcoal filament.
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www.mysteriesofcanada.com/Ontario/first_electric_light_...
www.mysteriesofcanada.com/Ontario/first_electric_light_bulb.htm
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