Friday, December 4, 2009

History of Bulb


The whole invention of the light bulb has a story from the early 1800s. Until that time, light sources that were available were candles, lanterns, oil and gas lamps. One day in 1809, an English chemist, Humphrey Davy, the journey began after the invention of an incandescent light source that could be used by normal people in their daily work. He used a battery of high performance at a flow of current between two carbon-moving stripes. With this current could be obtained through the two charcoal strips an intense artificial light, which was the first step in the creation of the first arc lamp. Sir Humphrey Davy began his experiments with platinum filaments before he came to prepare carbon arc lamps.

Although the modern light bulbs work in a little more advanced and sophisticated way, electrical current through a thin thread, it is heated and begins to produce light. It is a case of glass flasks, stops the oxygen in the air from the achievement of the filament, which destroy, otherwise the filament of the lamp through the process would be to oxidation. The basic principle of operation of a light bulb is very similar to the operation of the blackbody radiation.

Between 1820 and 1840, British scientist Warren de la Rue enclosed a platinum coil in a vacuum tube and passed electric current through it. This was the first attempt to make proto-light bulb. The design has been run entirely on the theory that the high melting point of platinum at high temperatures and thus the vacuum chamber would be less gas molecules react with the platinum, so that a long lifetime of the filament. This experiment was successful, and the light shines brightly enough, but the only downside was that the material for the coil that platinum is chosen, it was disgusting and expensive to get that twinge in the bud design.

Many inventors like Frederick de Moleyns which a powder of carbon filaments, Heinrich Gobel, who wanted to make the yarn with bamboo by charring of the shooting. Then Joseph Swan came to the thread of charred paper, but the lamp had its limitations because it used only if near the source of light and again he tried to experiment with cotton filaments. Well, if everyone knew the basic form and the theory of the function, all the experts were trying to invent the right material to filament. Thomas Edison was trying to improve on previous models, and he actually a light bulb that had bamboo fiber filament, and that actually lasted for somewhere around twelve to fifteen hundred hours. He also showed to improve the evacuation of the bulb, the actual results. So he succeeded in creating the bulb, was the low cost and long life, so that the lamps, the essential parts of our house, as they are now.

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