Joseph swan, English physicist, chemist and inventor. Swan's most famous story is that he obtained the first patent of incandescent lamp in 1878. His residence is the first private residence in the world illuminated by electric lights.
1860, joseph swan invented the semi-vacuum carbon filament lamp, the prototype of incandescent lamp. Due to the limitation of vacuum technology at that time, the life of the lamp was not long enough. 1875, Swan improved his invention.
1878, Swan patented the incandescent lamp one year earlier than Edison. Due to the patent dispute, 1883, joseph swan and Thomas Edison established Edison Electric Light Company. From 65438 to 0894, joseph swan became a member of the Royal Society.
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Contrary to popular understanding, Edison was not the inventor of electric light at first, but Edison improved it. 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 1878+02.
The report about the swan's light bulb gave Edison a great inspiration. 1879 10, Edison finally succeeded in making an incandescent light bulb with carbon fiber as the filament, which is called "carbonized cotton filament incandescent lamp". Later, a large number of incandescent lamps were put into production, and companies were established to establish corresponding power stations, transmission networks and other infrastructure, which soon made electric lamps 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.
References:
Baidu Encyclopedia-joseph swan
References:
Baidu encyclopedia-Edison