/kloc-At the beginning of the 9th century, a British chemist made the world's first arc lamp with 2000 batteries and two carbon rods. But this kind of lamp is too strong and can only be installed in streets or squares, which is not used by ordinary families.

1879 10 2 1, the inventor Edison finally lit the world's first electric lamp with practical value after long-term repeated experiments. By 1906, Edison made a light bulb with tungsten wire, which improved the quality of the light bulb and has been used ever since.

Second, today's electric lights.

There are many kinds and wide applications.

1, incandescent lamp 2, tungsten halogen lamp 3, gas discharge lamp 4, fluorescent lamp 5, high-intensity gas discharge lamp 6, high-frequency electrodeless lamp 7, halogen bulb 8, LED lamp.

Third, the future of electric light.

Tomorrow, there will be more and more kinds of electric lights, better performance and longer life. Electric lamps will develop in the direction of lower power consumption, longer life, better light intensity and color temperature, and the most important thing is to take the effect of protecting eyes as an important indicator.