Edison profile

Introduction: ThomasAlvaEdison (1847 February11931year1October 18) was born in Milan, Ohio, and died in West Orange, New Jersey, USA.

Inventors and entrepreneurs. Edison was the first person in human history to use a large number of production principles and electrical engineering research laboratories to patent inventions, which had a great and far-reaching impact on the world.

His invention of the phonograph, movie camera and electric light had a great influence on the world. He had more than 2,000 inventions and 1000 patents in his life. Edison was named the ninth among 100 people who influenced the United States by the authoritative American periodical Atlantic Monthly.

Facing everything around him calmly and facing life optimistically until death is Edison's attitude all his life. Edison's cultural level is extremely low, but his contribution to mankind is so great. Edison not only has a curious heart and an instinct to try by himself, but also has unlimited energy and courage to work beyond ordinary people.

Edison made so many inventions in his 84-year life, and he has been persistently devoted to inventions. In addition to his inventions and contributions in phonograph, electric light, telephone, telegraph and film, he also has many creations and opinions in mining, architecture and chemical industry, and has made great contributions to the progress of human civilization.

The main achievements of expanding data

1, phonograph

1877, Edison found that the diaphragm in the telephone transmitter would vibrate with the voice of speech, so he took a short needle and did an experiment, from which he was greatly inspired. Speech speed can make the short needle vibrate accordingly. On the other hand, this kind of vibration will definitely make the original sound, so he began to study the problem of sound reproduction.

/kloc-in August of 0/5, Edison asked his assistant to make a "strange machine" consisting of a large cylinder, a crank, a receiver and a diaphragm according to the pattern. When finished, Edison took out a piece of tin foil and rolled it on a metal cylinder engraved with spiral grooves, so that one end of the needle could be rotated by gently rubbing the tin foil.

The other end is connected to the receiver, then Edison shakes the crank to sing to the receiver, then puts the needle back in its original position, and then shakes the crank, and then the machine will release Edison's voice. In February 65438, Edison publicly demonstrated this "tin foil cylinder phonograph", which caused a sensation all over the world.

2. electric light

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:

Thomas Alva Edison-Baidu encyclopedia