Report | 2011-04-09 21:55 Night Tour· | Level 4
Synchronous transmitter
Early telegraph machines could only To transmit a message, and signals cannot be exchanged at the same time, since Edison himself was a telegraph technician, he started working on Edison and the telegraph he invented
Improved the traditional transmitter and created a dual transmitter. In 1874, another The quadruple transmitter, also known as the synchronized transmitter, was developed. At a time when radio had not yet been developed, the synchronized transmitter was a major breakthrough.
Improved telephone
We all know that the modern telephone was invented by Bell. In fact, the telephone was invented by Edison. But Bell submitted the patent application two hours earlier than Edison. So the patent rights were obtained first. But the phone's ability to receive and speak clearly is due to Edison's experiments again and again, breaking through the traditional stereotypes and creating a toner microphone, which improved the sensitivity, volume, and reception distance of the phone in one fell swoop. Otherwise, we would be making phone calls now. I still often say: Hey! Hey! I can’t hear you, I can’t hear you clearly.
Gramophone
One night in December 1877, the staff of the Mengluoyuan Laboratory shivered slightly, not because of the cold, but because they heard the first phonograph in human history. A recording: "Ma Li has a little sheep. Its fur is as white as snow. No matter where Ma Li goes, the little sheep is always by her side... This great invention does not need to be introduced. Everyone can understand it. Its application is so wide that the French government even awarded Edison the title of Sir! Later, Edison improved the phonograph many times until he changed the drum type to the bakelite turntable type. This was not just one or two years. But after decades of continuous improvement!
Electric light
In the early 19th century, people began to use gas lamps (gas lamps), but the gas was supplied by pipelines. Once the gas leaked or It is very easy to cause trouble. In fact, Edison set an impossible task for himself: in addition to improving lighting, he also wanted to create the electric light invented by Edison. A power supply system. So he and his partners at Mengluoyuan worked tirelessly on more than 1,600 experiments on heat-resistant materials and more than 600 kinds of plant fibers to create the first carbon filament light bulb, which can burn 45% at a time. Hours. Later, he continued to improve the manufacturing method on this basis, and finally launched a bamboo filament light bulb that could burn for 1,200 hours. In the mid-1880s, Edison's electric light business achieved success, which was more successful than any before. Before the mid-1980s, he rarely made mistakes. After the mid-1980s, although he made great achievements, failures were common. One of Edison's most unlaudable behaviors was his criticism of alternating current. , saying that it has side effects and may cause death and injury, but he did not elaborate. Therefore, some people said, "It is very strange for a person like him who has made many inventions to attack other people's new inventions. Contradictory things. "He opposed the use of alternating current in favor of direct current, and thus lost a fierce and stubborn debate. In this regard, it reflects the shortcomings of stubbornness and conservatism that gradually developed after Edison became a celebrity.
Copier
p>At first, the paraffin paper invented by Edison was only widely used in food and candy packaging materials. Later, he tried to carve the outline of characters on the wax paper to form a paraffin engraving paper plate, and put white paper under the paper plate. Then use an ink roller to roll it from the engraved paraffin paper, and something wonderful happened. Clear writing appeared on the white paper. After many improvements and experiments, in 1876, Edison began mass production of his invention. Copiers, all of a sudden, offices, schools, institutions, and groups all used this wax paper mimeograph machine. Due to the popularity of Edison's copiers and their popularity around the world, Edison deeply realized that he should invent something that people generally and deeply need.
AD 1847 ~ AD 1931 Invention king Thomas Alva Edison was born in Milan, Ohio in 1847. He only received three months of formal education. His teacher thought he was a mentally retarded student! Edison made his first invention when he was only twenty-three years old, an electronic vote counting machine. There was no market for such an instrument, and from then on Edison concentrated on inventing something that he expected to easily break into the market. Shortly after inventing the recorder, Edison invented an improved stock ticker in exchange for $40,000, a huge sum of money at the time. Edison followed with a series of other inventions, and soon became famous and wealthy. Perhaps his most innovative invention was the phonograph, which he patented in 1877. But even more important to the world was his invention in 1879 of a practical incandescent light bulb. The first person to invent electric lighting was not Edison. As early as a few years ago, Paris used solitary lamps to illuminate its streets. However, Edison's light bulb, together with the power transmission device he invented, made it possible for ordinary households to use electricity for lighting. In 1882, his company began producing household electricity in New York City. After that, household use of electricity quickly spread throughout the world. Edison established the first electric transmission company to deliver electricity to private homes, laying the foundation for the development of a huge industry. After all, it is not just lights that use this kind of power supply today, but a whole series of household appliances from televisions to washing machines. Edison greatly promoted the application of electricity in industry because the electricity from the transmission grid built by Edison was easy to use. Edison made huge contributions to the development of motion pictures, cameras, and projectors. He made important improvements to the telephone (his carbon microphone significantly improved audibility), the telegraph, and the typewriter. Among his other inventions were the phonograph, the mimeograph machine, and the accumulator. In total, Edison patented more than a thousand individual inventions, an incredible number. One reason Edison was so incredibly efficient was that early in his career, he established a research laboratory in Manlo Park, New Jersey, and hired a group of talented assistants to assist him in his work. Since that time many industrial companies have built large research laboratories, the prototype of which was Edison's laboratory. Edison's modern, well-equipped research laboratory—in which many people worked together as a unit—was one of his most important inventions, although one he certainly would not have patented. . In addition to being an inventor, Edison also worked in manufacturing and formed several companies, the most important of which later became the General Electric Company. Although Edison did not have the temperament of a purely theoretical scientist, he made an important scientific discovery. In 1882, he discovered that in a near-vacuum state, electric current can pass between wires that are not in contact with each other. This phenomenon is called the Edison effect. It not only has great theoretical significance, but also has important practical applications, which finally led to the invention of vacuum tubes and electronics. The creation of industry. Edison suffered from severe deafness for most of his life, but he more than compensated for this deficiency by his hard work and perseverance. Edison was married twice (his first wife died young), and each gave him three children. He died in Orange, New Jersey, in 1931.