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Let There Be Light

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Let There Be Light

What kind of world would it be without light? A horrible one. The light bulb is a world-changing invention because of this. If it wasn't invented, many world would be dark. The light bulb has given us more than just light though. If taken away, none of or lives would be the same.

The light bulb was invented on October 22, 1879 by a man known as Thomas Alva Edison. This brilliant man has made many more inventions, his important of which is possible the light bulb. Though he technically didn't invent the light bulb, due to his work the where not tossed away as a failed experiment. He later made a company which distributed electricity to the cities and made other items. He then had competition for the distribution of electricity. He later combined his company with another one to for General Electric.

Without the invention of the light bulb, many other fantastic items could not exist. Such items include the TV, computer, and the movies. These items would make our lives not as enjoyable and would destroy the entertainment industry.These items brighten our day up and allows several companies to thrive. There would be no headlights for your car, there would be no Christmas decorations or any form of flashlight. The world would be dark.

The light bulb works by taking just enough electric current to make a piece of metal glow brightly enough to give out visible light yet not get so hot that it melts and breaks. The piece of metal is called a tungsten filament. Experiments were made with different materials to use as the filament, including natural fibres, pure metals and alloys of different metals, to find the material which had the longest life whilst glowing brightly enough to give out visible light. The metal Tungsten was found to be the best.Also experiments were made trying a vacuum or different kinds of gas inside the glass bulb to

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