He has made several significant things about electricity. In fact, he is skilled to comply with new ideas, everything we remember Edison's electric light. It was also no electricity in use in lighting in a normal house. Because there is no efficient light bulb. The House also must use candles or oil lamps and around 1850 began to use gas. At the beginning of the 19th century, Sir Humphrey Davy artificial lamps to light caused by passing electric current to two carbon rods, sticks, causing light up. It used to illuminate the road. It is large and unwieldy Not suitable for use in homes later in the year 1878, scientists Joseph Swan came from Sunderland. Invented the first light bulb. He spent carbon rods in a small glass bowl. And carbon rods heated by electricity. The lighting up Unlike carbon, metal works Can be heated enough to illuminate without melting. But Swan's lamp lighting, too. Can not be utilized. Edison, which operates the same as the Swan in the United States. A way to improve the invention of Swan better. If that is the vacuum tube Carbon rod or wire It will be a brighter light. Without causing the glass to overheat. So Edison and Joseph Swan have been honored to share in this important invention    Edison's invention of more than 1200 of his works, such as electric light, phonograph player. Etc. Edison worked diligently One night, he slept only 4-5 hours. At the very end of his life, his health deteriorated. And passed away in 1931
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