Edison invented the light bulb (the story of Edison inventing the light bulb is 200 words)

Today, Xiaobian will share with you Edison's knowledge of inventing the light bulb, and also use 200 words to analyze and answer Edison's story of inventing the light bulb. If you can solve the problem you want to know, pay attention to this website.

How did Edison invent the electric light?

The process of Edison's invention of electric light is: in his laboratory, after thousands of experiments, he finally made the world's first electric light bulb with carbonized cotton thread as the filament, and issued about 10 kerosene lamp.

The report about the swan light bulb in those days gave Edison great inspiration. 1879, 10 In June, Edison finally succeeded in making an incandescent bulb with carbonized fiber as the filament, which was called "carbonized cotton filament incandescent lamp". Later, a large number of production, the establishment of the company, the establishment of the corresponding power stations, transmission networks and other infrastructure, and soon made electric lights widely used in the United States.

In what year did Edison invent the electric light bulb?

1878 In September, Edison began to study electric lights when he was 3 1 year old. After studying the arc lamp, Edison announced that he could invent a satisfactory lamp, but he needed money. At that time, he was a man with 170 invention patents, and his inventions brought huge profits to capitalists, so a consortium was willing to provide him with financial assistance. After thousands of times, ...

Edison invented the light bulb,

The great inventor Edison, in order to let people continue to work with light in the dark, so as to improve production efficiency. So we worked hard for 13 months, tried more than 7000 times, and finally invented the world's first electric lamp on 1879,10,21. Edison tried to put a carbonized cotton thread into the light bulb. When the power was turned on, the light bulb gave off golden light, which made the whole laboratory bright.

As early as 182 1, British scientists David and Faraday invented an electric lamp called an arc lamp. This kind of electric lamp uses carbon rods as filaments. Although it can emit light, it is dazzling, consumes a lot of electricity, has a short life and is not practical.

"Arc lamps are not practical. I must invent an electric lamp with soft light, which can be used by thousands of households." Edison made up his mind.

So, he began to experiment with this material as a filament: using traditional carbon ribbon as a filament, the filament broke as soon as it was electrified. Ruthenium, chromium and other metals are used as filaments. After being electrified, it will burn out at one o'clock. Using platinum wire as filament is not ideal. In this way, Edison experimented with 1600 kinds of materials. After repeated trials and failures, many experts believe that the future of electric light is bleak. Some famous British experts even ridiculed Edison's research as "meaningless". Some reporters also reported: "Edison's ideal has become a bubble.

Edison didn't flinch in the face of failure and some people's cynicism. He understands that every failure means a step closer to success.

Once, Edison's old friend Mackenzie visited him. Edison looked at Mackenzie's long beard as he spoke, and suddenly his eyes lit up and said, "Mr. Beard, I want to use your beard." Mackenzie cut a lock and gave it to Edison. Edison confidently selected a few thick beards, carbonized them and put them in the light bulb. Unfortunately, the test results are not ideal. "Then try it with my hair, maybe it's ok." Mackenzie said.

Edison was deeply moved by the spirit of his old friend, but he knew that hair and beard were the same, so he didn't take the old man's advice. Edison left to see the kind old man off. He helped the old man flatten the cotton-padded clothes he was wearing. Suddenly, he shouted again, "Cotton thread, why not try cotton thread?"

Mackenzie unbuttoned his coat without hesitation, tore off a piece of cotton cloth and handed it to Edison. Edison put the cotton thread in a U-shaped closed crucible and treated it at high temperature. Edison clamped the carbonized cotton thread with tweezers. Get ready to put it in the light bulb. However, because the carbonized cotton thread was thin and brittle, and Edison was too nervous, his hands with tweezers trembled slightly, and the cotton thread was cut off. Finally, Edison managed to put a carbonized cotton thread into the light bulb.

When night fell, Edison's assistant pumped the air out of the bulb and put it on the lamp holder. Everything is ready, and everyone waits for the result quietly. When the power is turned on, the light bulb emits golden light, which illuminates the whole laboratory. After 13 months' efforts, we tried more than 6,000 kinds of materials for more than 7,000 times, and finally made a breakthrough.

After further experiments, Edison found that it was the best to use carbonized Japanese bamboo filament as filament. So he began to mass-produce electric lights. He installed the first light bulbs on the research ship "Garnett" so that researchers could have more working hours. Since then, electric lights have been used in ordinary people's homes.

Later, people have been using this kind of light bulb with bamboo filaments. After decades, it was improved, that is, tungsten wire was used as the filament, and inert gas nitrogen or argon was filled into the bulb. In this way, the life of the light bulb is prolonged a lot. This is the light bulb we use now.

Edison began to study electric lamps from 1879. The first incandescent lamp material he chose was platinum, which had the highest melting point among the known metals at that time. However, platinum bulbs are too expensive, and the life span of incandescent lamps is only one or two hours. Edison also tried many other materials, such as aluminum, boron, chromium, gold, silver, titanium and tungsten. 1879,10,21On this day, he put the long-abandoned carbon into a light bulb with a much higher vacuum. It is found that carbon is higher than any platinum wire, and its melting point is very high, so no other adjusting accessories are needed. A week later, Edison announced his invention. The next year, he successfully made a bamboo filament lamp that can be lit continuously for 1200 hours. Later, in 1904, Austrian Alexander Chengster and Flantz Naman invented the tungsten lamp, which was three times as strong as the bamboo filament lamp, and the former was replaced. Tungsten lamps have been mass-produced since 1907 and have been in use ever since.

After Edison, 1909, American Ke Renqi invented tungsten wire instead of carbon wire, which greatly improved the efficiency of electric lamp. Since then, electric lamps have leapt to a new level, and fluorescent lamps, iodine tungsten lamp and other lamps have mushroomed on the lighting stage.

Other inventions:

1. 1868 invented the voting counter. This is Edison's first patent in his life. The invention simplifies the voting procedure and can prevent voting fraud.

2. 1869 invented the universal printing press, also known as "Edison universal printing press".

The synchronous transmitter was invented on 3. 1874.

4. 1875 Invention of acoustic analysis resonator.

5. 1876 invented wax paper mimeograph.

On the basis of Alexander Bell 6. 1877, the telephone alarm was improved and the carbon block transmitter was invented. In the same year, the tin foil cylinder phonograph was invented, which was the original phonograph.

7. 1879 On the basis of humphry davy, the inventor of the original electric lamp, we invented the carbonized cotton filament incandescent lamp, and developed various additional devices such as parallel circuits, fuses and insulating materials, which greatly improved people's lives.

The electric meter was invented in August.1880.

The film phonograph was invented in September.1889.

10. 1902 invented the nickel-iron alkaline battery, also known as "nickel-iron alkaline battery".

The mobile film projector was invented in11.1891.

12. 19 10 contributed to the appearance of talking movies.

Who invented the light bulb?

The light bulb was invented by Edison. Edison was born in Milan, Ohio, and died in West Orange, New Jersey, USA. He is an inventor and entrepreneur. 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. He invented the phonograph, movie camera, light bulb, etc. , with more than 2000 inventions and 1000 patents.

It is generally believed that the electric light was invented by Thomas Edison, an American. 180 1 year, the British chemist David electrified the platinum wire to glow. He also invented the electric candle in 18 10, which was illuminated by an arc between two carbon rods. 1854, Henry Goebbels put a carbonized bamboo filament under a vacuum glass bottle to make it glow. Today, his invention seems to be the first incandescent lamp with practical value. The light bulb he tested at that time could last for 400 hours, but he didn't apply for the design patent in time.

1850, the Englishman Joseph Wilson Swan began to study electric lights. 1878, he obtained a British patent for a light bulb powered by carbon wire under vacuum, and started to set up a company in Britain to install electric lights in every household. 1874, two Canadian electrical technicians applied for a patent for electric lamps. They filled the glass bulb with nitrogen, and the electrified carbon rod made it glow. But they didn't have enough money to continue developing this invention, so they sold the patent to Edison on 1875.

Edison's greatest discovery was that tungsten was used as the filament instead of carbon. Later, in 1906, General Electric invented the manufacturing method of tungsten wire for electric lamps. Finally, the method of manufacturing tungsten filament at a low price was solved, and the tungsten filament bulb has been used ever since.

The biggest problem of light bulb is the sublimation of filament. The life of modern incandescent lamps is generally about 1000 hours.

When Edison invented the electric light.

Edison invented the incandescent light bulb in 1879, and obtained the electric light patent in 1880. Edison was a famous American inventor and entrepreneur. He had more than 2,000 inventions and 1000 patents in his life. His invention of electric light, phonograph, movie camera and power system had a great influence on the world.

Edison's main achievements:

1, 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 used ever since, so Edison became a recognized inventor of electric lamp.

2, phonograph

It was found that the diaphragm in the telephone transmitter would vibrate with the voice of the speaker, so I made an experiment with a short needle, from which I got great inspiration. 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. After the production, 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 gently rubbed the tin foil and the other end was connected with the receiver. Then Edison shook his crank and sang to the receiver. After that, he put the needle back. In February 65438, Edison publicly demonstrated this "tin foil cylinder phonograph", which caused a sensation all over the world.

3. movies.

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.

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. During the screening, the phonograph runs synchronously with the picture, so that sound and image appear at the same time.

The story and process of Edison's invention of the light bulb

Edison invented the electric light. At first, Edison worked hard for 13 months and tried more than 7000 times. Finally, he made a breakthrough. Edison tried to put a carbonized cotton thread into the light bulb and turn on the power. The light bulb gave off golden light, which lit up the whole laboratory.

Edison invented the electric light briefly.

/kloc-at the beginning of the 0/9th century, people began to use gas lamps, but gas was supplied by pipelines. Once leaked or blocked, it is very easy to have an accident. 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 for more than 65,438+0,600 times before making 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.

What inspired Edison to invent the electric light?

It was the American inventor Edison who really invented the electric light to make it shine. He is the child of a railway worker. He dropped out of school before finishing primary school and made a living by selling newspapers on the train. Edison is an extremely diligent man. He likes to do all kinds of experiments and make many exquisite machines. He is particularly interested in electrical appliances. Ever since Faraday invented the electric motor, Edison was determined to make electric lights and bring light to mankind.

Edison made a detailed test plan after carefully summarizing the previous failure experience in manufacturing electric lamps, and conducted experiments in two aspects: one was to classify and test more than 600 different heat-resistant materials of/kloc-0; The second is to improve the vacuum pumping equipment to make the bulb have a high vacuum degree. He also studied the new generator and circuit shunt system.

Edison tested 1600 kinds of heat-resistant luminescent materials one by one, but the linear energy of platinum wire is good, but the price of platinum is amazing, so we must find a more suitable material to replace it. 1879, Edison finally decided to use carbon filament after many experiments. He sprinkled carbon powder on a piece of cotton silk, bent it into a horseshoe shape, heated it in a crucible, made it into a filament, put it in a bulb, and then pumped the air out of the bulb with an air extractor. It can be used continuously for 45 hours when the light is on. In this way, the first batch of carbon filament incandescent lamps in the world came out. 1879 On New Year's Eve, Lopark Street where Edison Electric Company is located is brightly lit.

In order to develop electric light, Edison often worked in the laboratory for more than ten hours a day, and sometimes experimented for several days. After he invented carbon fiber, he experimented with more than 6000 kinds of plant fibers. Finally, he chose bamboo filaments, burned them in a high-temperature closed furnace, and then processed them to obtain carbonized bamboo filaments, which were put into the light bulb, thus improving the vacuum degree of the light bulb again, and the light bulb could be continuously lit for 1200 hours. The invention of electric light once caused natural gas stocks to plummet 12% in three days.

After Edison, 1909, American Ke Renqi invented tungsten wire instead of carbon wire, which greatly improved the efficiency of electric lamp. Since then, electric lamps have leapt to a new level, and fluorescent lamps, iodine tungsten lamp and other lamps have mushroomed on the lighting stage.

Lights turn darkness into light and make the world more dazzling and colorful.