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A Glance On The Way Cheap Light Bulbs Were Created
Incandescent lamps or Light bulbs are available in different models. As there are conventional ones that we recognize, there are likewise those that are produced for a particular purpose. Projector bulbs, for instance, are used for projectors. Then there is the full-spectrum light bulb, which produces a specific light called white light and are used to remedy disorders attributable to insufficient exposure to sunlight.
However, it would be remarkable to know how cheap light bulbs have come to be available. Keep in mind that “cheap” at this point is used to stand for commercial or that every regular end user can pay for. We take this into consideration because prior to the development of light bulbs, there were a series of experiments and discoveries that happened. Even if the discovery of the incandescent lamp is usually attributed to Thomas Edison, there are many other scientists that have contributed to what we have right now.
It was in 1802 that Humphry Davy of Great Britain created the earliest incandescent light. The electric current passed through a thin narrow piece of platinum, a metal that has a really high melting point. The light may have not been clear enough and did not go on long enough, nevertheless this led to more discoveries and experiments up until the first functional light bulb was discovered by Thomas Edison in 1879.
Another contribution came from Warren de la Rue, who enclosed a coiled platinum filament in a vacuum tube where electric current went through it. It was an efficient design, but as you are aware of, platinum is expensive and, thus, not practical for commercial purposes. Additional experiments and designs were made, and these include those by Frederick de Moleyns (1841), John W. Starr (1845), Jean Eugene Robert-Houdin (1851), and A.N. Lodygin (1872).
Additional attempts to producing practical incandescent lamps were made prior to Edison. Connected with these efforts are Joseph Wilson Swan (1850) and Henry Woodward and Matthew Evans (1874). While Swan used carbonized paper filaments in a clear glass bulb, Woodward and Evans made their incandescent lamps with different sizes and shapes of carbon rods placed between electrodes in glass cylinders that were filled with nitrogen.
Then there was Thomas Edison, who, in 1879, begun to carry out serious research on developing a useful light bulb. He performed many experiments with platinum as well as other metal filaments, but in the end, he went back to using a carbon filament. The rights for his work was given to him in 1880.
Throughout the years, more enhancements have been made to incandescent lamps. We right now enjoy different types of light bulbs, examples of which include halogen light bulbs, compact fluorescent light bulbs, and other specialty light bulbs. Of course, we would not have been using them if not for the great minds behind the concept of practical incandescent lamps.
Lessons in leadership: 70 years after Pearl Harbor (Miami Herald)
A thin fragment of moon stood watch that Christmas Eve as the president of the
United States and the prime minister of Great Britain came out onto the south
portico of the White House. They were there to light the national Christmas
tree -- and to speak a holiday greeting to an uncertain world.
Light - The Thin Red Line Soundtrack by Hans Zimmer
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