Surgical lights are lights with special functions
The invention and application of the lamp began in 1809. The British chemist David invented the arc lamp, and mankind entered the era of using electric lighting. In 1879, in the California Theater in the United States, mankind first used electric arc light. In 1906, Edison invented the household electric light bulb using tungsten filament as the filament. In the future, incandescent lamps, fluorescent lamps, energy-saving lamps, neon lamps and contemporary high-tech invented high-tech lamps have sprung up on the stage of lighting. It has greatly facilitated people's production and life.
Edison's greatest contribution to electric light
It is the design of the filament. He tried more than 6,000 replacement filaments in two years and conducted as many as 1,200 experiments. After experimenting with various materials around the world, Edison found that platinum was the most effective. However, this material is very expensive and as an actual filament, its efficiency is limited. Finally, Edison tried the carbonized cotton filament filament. On the evening of Sunday, October 19, 1879, Edison and his assistant energized the cotton filament and took turns to observe around the clock. After more than 40 hours, the cotton filament was still glowing, and Edison knew that he had solved the problem. The sales of light bulbs began to appear in 1880, and the first full introduction of the Edison lighting system in London was as early as the Holburn Viaduct in 1882. The era of general electric lighting through centralized urban power began on September 4, 1882, at Pier, New York. Seoul Avenue Station. Faced with questions from reporters, Edison "I have fulfilled what I promised." This laid the foundation for the lights used in surgery in the future.
