Thomas Edison started research on electric bulb from March 1878. Thousands of tests, studies lasting place until October 1879, the first electric light bulb of mankind was born, lighting until 40 hours continuously. December 31, 1879, a special train carrying over 3,000 people curiousity sweep against New York - Menlo Park to observe firsthand the electric bulb. That night, all the scientists, professors, government employees and the entire people in Menlo Park flooded in light harmony of something new replacement lamp for lamps using conventional fuels.
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