Edison devoted his life to the history of human development. Even though life is so unsatisfactory, he has quietly gained a little happiness in life. Even if the society is so dark, he resolutely burns himself and illuminates the world. Comrade Edison, a scientist, made contributions to the country. His contribution to mankind has created a broad future. Edison is the greatest and an example of human learning.

Major achievements:

As early as 180 1 year, a British chemist named humphry davy used platinum wire to electrify and glow in the laboratory. 18 10, he invented the "electric candle" which was illuminated by the arc between two charged carbon rods, which was the earliest prototype of the electric lamp.

Joseph swan, another British electrical engineer, after nearly 30 years' research, made a vacuum bulb with electricity and light from carbon wire in February 1878, and applied for a patent in Britain in February 1880. The incandescent light bulb he invented was officially listed in February188/kloc-0. Perhaps due to insufficient evaluation of market demand and insufficient investment, Swan's electric lamp has not been widely used, and finally Edison obtained the patent.