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. The report about the swan's light bulb gave Edison a great inspiration. 1879 10, Edison finally succeeded in making an incandescent bulb with carbon fiber as the filament, which is called "carbon cotton filament incandescent lamp".
Subsequently, a large number of enterprises were put into production, and companies were established to establish corresponding infrastructure such as power stations and transmission networks, which soon made electric lights widely used in the United States. During this period, he constantly improved his technology, and finally decided to use tungsten wire as the filament, which is called "tungsten lamp" and has been in use ever since, so Edison became a recognized inventor of electric lamp.
Edison's introduction:
Thomas Alva Edison was born in Milan, Ohio, and died in West Orange, New Jersey, USA. World-famous inventors, physicists and entrepreneurs are known as "the king of inventions in the world". He has more than 2,000 well-known and important invention patents and was awarded the title of "Menlo Park's Wizard" by the media.
Edison was the first person in human history to make use of a large number of production principles and electrical engineering research laboratories to patent inventions, which had a far-reaching impact on the world. His invention of the phonograph, movie camera and electric light had a great influence on the world. He has more than 2000 inventions, including phonograph, movie camera, tungsten light bulb, etc., which have great influence on the world. In the United States, Edison has 1093 patents, while his patents in Britain, France, Germany and other places have accumulated more than 1500.
Edison was also a great entrepreneur. 1879, Edison founded "Edison Electric Lighting Company". 1880, incandescent lamps went on sale. 1890, Edison established Edison General Electric Company in all its businesses. 189 1 year, Edison's thin filament and high vacuum incandescent bulb were patented. 1892, Tom Houston Company and Edison Electric Lighting Company merged to form General Electric Company, which opened the hegemony of General Electric in the electric field for a century.
The above contents refer to Baidu Encyclopedia-Edison.