The main inventions are:
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.
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.
3. Movable film camera
1889 Edison invented the movable film camera. This camera uses a pointed gear to drive the tape with the width of 19mm. Under the control of the ratchet, it drives the tape to move intermittently and punch holes at the same time.
4. Movable film projector
189 1 year, Edison invented the movable film projector, which is an early film projection equipment, and introduced the basic methods of film projection. The motor is used in front of the light source to make the film belt of continuous pictures rotate at high speed, thus creating the illusion of motion. The light source projects the pictures on the film onto the screen.
5. Audio movies
19 10, Edison invented a movie camera consisting of a phonograph and a camera. Under the energy of the motor, the camera's shading crankshaft is linked with the phonograph, which can record when the camera is running.
Extended data:
Edison's main growth experience:
1, helpless to move.
1854, something happened that had a great influence on his development. The opening of the railway along the south bank of Lake Erie greatly reduced the merchant shipping business of the Milan Canal. Edison's father's business can no longer be maintained, because the life of the family is becoming more and more difficult. In order to seek another development, Edison's family moved here. They left Milan and moved to Grady Otterborg in the northern suburb of Port Huron, Michigan, to start a new life.
Step 2 study
Thanks to his mother's good educational methods, Edison realized the importance of books. He not only reads widely, but also reads ten lines and never forgets anything. Under the guidance of his mother, Edison read the works of English Renaissance playwrights Shakespeare and Dickens and many important historical books, such as edward gibbon's History of the Decline of the Roman Empire and david hume's History of England.
Step 3 study chemistry
From 65438 to 0857, Edison became interested in chemistry. He did experiments in the cellar at home according to the textbook, which often caused frequent accidents.
4. The first patent
1at the end of 868, Edison came to Boston as a telegraph operator. In the same year, his first invention was patented, which is a device for automatically recording votes, namely "voting counter". Edison thought that this device could speed up the work of Congress and would be very popular.
5. Many twists and turns
1884, Edison applied for the patent of "Edison effect", but he did not carry out the next research. Nikola tesla came to new york with a letter of recommendation from his employer, Charles Bachle, and applied for a job in Edison Laboratory. Edison immediately hired Tesla and arranged for him to work in Edison Machinery Company. Tesla began to design simple appliances for Edison. He made rapid progress and helped the company solve many problems.
Step 6 stop
193118 At 3: 24 am, Edison died peacefully in his sleep at the age of 84 at his home in West Orange, New Jersey, USA. To commemorate Edison, the U.S. government ordered a nationwide power outage 1 minute,1October 2 1 day at 6: 59, and lights were turned off in Hollywood and Denver. At 7: 59, the eastern United States lost power for one minute; At 8: 59, the Chicago tram and elevated subway stopped running; From the Mississippi valley to the gulf of Mexico, it fell into darkness; The torch in the hands of the Statue of Liberty in New York went out at 9: 59.
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