That, along with the wheel, the light bulb is one of the most important inventions of the world 'and if you can see, as the night rather than drive, then no doubt see the light bulb without a doubt the most important.
The light bulb as we know it today is a product of the work of more than 10 noteworthy inventors from Germany, Great Britain and the United States for a period of 182 years.
It all started with an English chemist Sir Humphry Davy in 1809, which, by noticeElectricity from a battery, but a strip of carbon glowed. This was the origin of the first arc lamp. Humphrey died in 1829, about 120 years before the artificial light, it was so crucial in the invention, light up the trenches of the Second World War.
Over 11 years later Davy, the English inventor, Warren De la Rue has a tube that emits light from an electric current through a filament of platinum contained in a vacuum tube. While a successful model, thisimpractical for widespread use because of the cost of the platinum filament.
In 1854, all hats were off to Germany. Henricg Globel, created by the watchmaker, the first true light bulb with a filament of carbonized bamboo placed in a container. 'World' the term 'light bulbs world "could be called after Henricg, even if they are not free to say.
Another German, Hermann Sprengel provided another step forward, the invention ofMercury vacuum pump, a strong negative pressure inside the bulb possible. This allows a longer life because it removes the effects of oxidation on the filament.
The most famous of all the inventors who had a hand in developing the light bulb and often (mistakenly) handed over the crown of the invention of the lightbulb, the American inventor Thomas Alva Edison, who continued pioneering other important inventions as the phonograph and the kinetophone is (talking about the film). For involvement inDevelopment of the bulb, he invented a carbon filament, which for 40 hours, put in the absence of oxygen less bulb. By 1880 he had managed to prolong the life of his lamp over 1200 hours with a filament of bamboo stems.
Tungsten bulb dipped his head in the world in 1906, when General Electric Company of America patented the use thereof. At that time, but these filaments were costly.
In 1910, an American physicist named William David Coolidge (William or hisfriends) came up with an improved method of making the tungsten filaments. His improved method greatly extended the life of existing filaments and made them much more economical.
The light bulb as we know it was made and continues to light up the dark nights.
In 1991 Phillips invented a way of increasing the life of a bulb to well over 60,000 hours. That's almost 7 full years of illumination. Even more if you switch it off when you go to bed.
