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Operating lamp

Operation lamp lamp is a special function. While the invention and application of lamp from 1809 to start, United Kingdom chemist David invented the electric arc lights, mankind has entered the era of the use of electric lighting. In 1879, United States California Theatre, the first electric arc lamps (electric arc light). In 1906, the tungsten filament invented Edison household light bulbs.

Yihou, incandescent lamps, fluorescent lamps, energy-saving lamps, neon lights and contemporary use of various high-tech high-tech invention lamp have sprung up on the lighting stage. Greatly facilitates the production and life of the people. Greatest contribution is the Edison Electric light filament design. In two years he tries to replace the more than 6000 filament, for up to 1200 times experiment. After testing various materials around the world, Edison found that Platinum was most effective. However, this material is very expensive and as an actual filament, its effectiveness is limited. Finally, Thomas Edison tried carbonized cotton-thread filament. 

On October 19, 1879, on Sunday evening, Edison and his assistant, for example, the cotton-thread filament and rotate around the clock observation. After more than 40 hours, cotton-thread filament is still glowing, Edison knew he had solved the problem. Began in 1880 bulb sales, while in London the first introduction of Edison's lighting system as early as 1882 Holburn Viaduct, through the era of centralized power General Electric lighting of the city began on September 4, 1882, place Pierre Street station in New York. Facing reporters ' questions, Edison "I have finished what I promised." This laid the foundations for later for surgery lights.

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