Edison's important inventions and achievements are as follows
1, phonograph
1877, 18 One night in February, the staff of Mengluoyuan Laboratory trembled slightly, not because of the cold, but because they heard the recording for the first time in human history. This great invention, how widely it is used. The French government also awarded Sir Edison the title. Later, Edison made many improvements to the phonograph until the drum type was changed to the bakelite turntable, which has been improved continuously for decades.
2. electric light
/kloc-at the beginning of the 0/9th century, people began to use gas lamps, but gas was supplied by pipelines. Once it leaks or is blocked, it is very prone to accidents, and people are very eager for the reform of lighting. In fact, Edison set himself an impossible task: in addition to improving lighting, he must also create a power supply system.
So he and his partners in Luomeng Garden made more than 600 experiments on heat-resistant materials and more than 600 kinds of plant fibers 1600 times before they made the first carbon filament light bulb, which can burn for 45 hours at a time. Later, he constantly improved the manufacturing method on this basis, and finally introduced a bamboo filament light bulb that can ignite 1200 hours.
3. Synchronous transmitter
Early telegrams could only transmit one message at a time, but could not exchange signals at the same time. Because Edison himself was a telegraph technician, he began to improve the traditional telegraph with Edison and his invented telegraph and made a double transmitter. 1874, he developed a quadruple transmitter, namely a synchronous transmitter. At that time, before the development of radio, synchronous transmitter was a major breakthrough.
4. Copying machine
At first, Edison invented paraffin paper, which was only widely used as packaging material for food and candy. Later, he tried to carve the outline of the words on wax paper to form a wax lettering paper tray, put white paper under the paper tray, and then rolled it off the wax lettering paper with an ink roller. A wonderful thing happened, and clear handwriting appeared on the white paper. After that, it was improved many times.
1876, Edison began to mass-produce the photocopier he invented, which was adopted by institutions, schools, institutions and organizations. Because Edison's copier is very popular all over the world, Edison deeply realized that he should invent things that people generally and deeply need.
5. Movie 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. This camera is driven by a motor, and the shutter shaft is connected to the phonograph. When the camera is running, the phonograph records sound and can take pictures continuously.
Baidu Encyclopedia-Thomas Alva Edison