What did Edison observe and invent?

There are more than a thousand kinds! 1. The early telegrams of synchronous transmitter can only send one message at a time, and cannot exchange signals at the same time. As Edison himself was a telegraph technician, he began to improve the traditional transmitter and made a dual transmitter. 1974, he developed a quadruple transmitter, namely a synchronous transmitter. At that time, before the development of radio, synchronous transmitter was a major breakthrough. 2. Edison Copier At first, the paraffin paper invented by Edison was only widely used in the packaging materials of food and candy. Later, he tried to carve the outline of words on wax paper to form a wax lettering paper tray, put a piece of 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 cardboard. After many improvement experiments, Edison began to mass-produce the copier he invented in 1976, and this template mimeograph was adopted by institutions, schools, institutions and organizations for a time. 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. We all know that the modern telephone was invented by Bell. In fact, the telephone can receive and communicate clearly, thanks to Edison's repeated experiments, which broke through the traditional mode and made a toner transmitter, which improved the sensitivity, volume and receiving distance of the telephone in one fell swoop. Otherwise, we will often say, "Hello! Hey! I can't hear you. I can't hear you clearly. 4. The Birth of the Gramophone Edison's Gramophone 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: "Maman has a little sheep, and its fur is as white as snow, no matter where Mamam goes, it is small. This great invention needs no more introduction from the little jar teacher, and everyone can understand how wide its application is. The French government also awarded Sir Edison the title! Later, Edison made many improvements to the phonograph until the drum was changed to a bakelite turntable. This is not a year or two, but after decades of continuous improvement! 5. Messenger of Light/KLOC-At the beginning of the 9th century, people began to use gas lamps, but gas was supplied by pipelines. Once it is leaked or blocked, it is very prone to accidents. In addition, the lighting engineer in the tower at the beginning of the article also has something to do. Therefore, people are very eager for lighting reform. 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 Romon Garden worked tirelessly on heat-resistant materials and more than 600 kinds of plant fibers 1600 times before making the first carbon filament light bulb, which can light 45 light bulbs 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. In order to popularize the use of electric lights, he developed various additional devices for electrical systems, such as parallel circuits, fuses, insulation materials and copper wire mesh. It also made a generator with stable voltage and a three-wire switch to realize economic distribution. 1882 new york pearl street power station officially opened. Edison accomplished this impossible task and greatly improved human life. The era of electricity began from this moment. 7. Endless Invention 1883 Edison discovered the thermionic effect: under certain conditions, when the filament is heated, electricity can be conducted through space even without wires. This principle laid the foundation for electron tubes and future radio radios. 1887, he set up a bigger laboratory in West Orange. His inventions are numerous, the most important of which are 1888 movie camera, 1896 movie projector, and Edison nickel-iron battery, which has been successfully tested more than 10,000 times. In addition, Edison also developed chemical materials for the US government, and also accepted a private commission to engage in a plan to extract rubber from native plants to solve the problem of insufficient rubber raw materials at that time.