Who invented the light, who invented the lamp

Thomas Edison (1847, 1931) was a famous American inventor. He worked almost ten hours a day for decades, and read 3 to 5 hours in the study at night. So, on the day of Edison's 79th birthday, he proudly said to people, I am already 135 years old.

He lived to be 84 years old and made as many as 1,100 inventions during his lifetime, the greatest of which was the invention of the phonograph and the automatic telegraph, experimenting with and improving the incandescent lamp and **. Edison began to study electric lighting in his early 20s, and for more than 10 years, he successively chose bamboo cotton, graphite, tantalum ......and so on thousands of different substances as filament materials for testing, often through the sky, once he and his assistants worked for 5 days and nights. In 1879 Edison used carbon filament as an incandescent filament and lit it for 40 hours.

Because the surface of the carbon filament is porous, brittle, and the strength is very low. It was soon replaced by tungsten wire. In 1883, Edison discovered the phenomenon of thermal electron emission, also known as the "Edison effect", that is, some electrons or ions near the metal surface get enough kinetic energy for their irregular movement due to high temperature, overcome the constraints of the surface, and escape from the metal.

The Edison effect is essential for the operation of any vacuum tube, and the cathode, which is the emitting surface, is often coated with a layer of alkaline earth metal oxide to facilitate the emission of electrons, and heated with an electric current to maintain high temperatures. In 1900, Edison invented the iron-nickel battery, which is an alkaline battery with an electromotive force of about 1 3 1 4 volts, which has a long life but is not very efficient. Edison made many inventions in his lifetime, but when asked why Edison succeeded, he said:

Some people think I have some genius, which is not true, "genius" is one percent inspiration, ninety percent inspiration.

The earliest practical electric lamp was the incandescent lamp, but long before the birth of the incandescent lamp, the Englishman Humphrey David used 2000 batteries and two carbon rods to make the arc lamp, but the arc lamp was too bright, produced too much heat and was not durable, and it could not be used in ordinary places.

The world's first arc lamp, Sir Humphrey Davy (Faraday's teacher), a professor at the Royal Academy, used 2,000 batteries and two charcoal rods, made in 1809. The world's first practical electric light was lit by the American inventor Thomas Edison on October 21, 1879 through a long period of trial and error.

The light bulb was invented by Edison, Edison made the electric light bulb with the principle of tungsten filament, and then we had light, and then you went through continuous improvement, and then produced, light-emitting diodes, and now, LED lights.

The lamp was built in 1809 by an English professor Han AttachedDavy's Master Invented Ming.

In 1809, Sir Humphrey Davy, a professor at the Royal Academy of Honour (Faraday's teacher), used 2,000 batteries and two charcoal rods to make the world's first arc lamp. On October 21, 1879, the American inventor Thomas Edison finally lit the world's first practical electric light through a long period of trial and error. Electric light converts electrical energy into light energy and illuminates humans at night or in a dark room.

Since the invention of the electric light, it has given a great impetus to the development of mankind.

The lamp was invented by Henri Goebbels and improved by Edison.

It is now generally believed that it was invented by Edison, but in fact it was not, and the real inventor was Henri Goebbels.

As early as 1854, the light bulb was invented, but unfortunately there was no patent at that time, and later due to lack of funds, the technology was sold to Edison, and then Aiqian Yan Zi Dickson continued to research, found a more suitable material to develop an incandescent lamp, and gradually began to expand the production and use of the scope, so Xiang Ant is the most famous. The electric light was invented by Henri Goebbels.

The lamp was invented by the Englishman Joseph Wilsonswan. Joseph Wilsonswan, an Englishman, began to study electric lighting earlier than Edison and successfully applied for a patent. Swan later sold the patent to Edison, whose role was only to ask his subordinates to improve it after he had the patent.

Swan is best known for obtaining the first patent for an incandescent lamp in 1878. His residence was the world's first private residence illuminated by electric light.

The history of the invention of the lamp

In 1854, the German watchmaker Henri Gobert, who immigrated to the United States, made the first practical electric lamp from a carbonized bamboo wire placed in a vacuum glass bottle. In 1860, the Englishman Joseph. Swann also made carbon filament electric lamps, but he failed to obtain a good vacuum environment that allowed the carbon filaments to work for long periods of time.

It was not until 1878, when British vacuum technology developed to the extent that it was necessary that he invented a light bulb powered by carbon filament under vacuum, and obtained a British patent.

In 1874, two Canadian electrical technicians applied for a patent for an electric lamp: nitrogen was filled under a glass bubble to emit light with an electrified carbon rod, but they did not have the financial resources to continue perfecting the invention, so they sold the patent to Edison in 1875. Edison bought the patent and tried to improve the filament, and finally in 1880 he made a carbonized bamboo filament lamp that could last for 1,200 hours.

However, the U.S. Patent Office ruled that Edison's invention of the carbon filament incandescent lamp was invalid.

After years of litigation, Henry Goebbels won the patent, and Edison eventually bought it from Goebbels' impoverished widow. In England, Swan sued Edison for patent infringement, and they later settled out of court to establish a joint company in England in 1883. Swan later sold his shares and patents to Edison.

At the beginning of the 20th century, the carbonized filament was replaced by tungsten filament, and the tungsten filament white Zhengzhi incandescent lamp is still used today.

The inventor of the electric light was Edison. Edison invented the incandescent lamp in April 1879 and was the first to use a tungsten light bulb, which could generate heat by passing an electric current to make the filament glow. Subsequently, between 1880 and 1882, he designed parts such as lamp sockets, buttons, fuses, current cut-offs, and meters, and perfected carbon arc lamps, making the use of electric lamp socks more widely.

As a result, Edison is considered the inventor of the electric light.

I hope it can help you, hopefully.

A long time ago, when the bridge was invented, many people generally used candle lamps and kerosene lamps for lighting at night, which made people's lives feel inconvenient, and Edison was very distressed at that time, and he was determined to invent a light bulb that could last for a long time. So Edison continued to conduct various material tests in the laboratory, using a carbon strip concealment grip for testing, but this material is very fragile, it is difficult to use as a bulb material, after failure, he began to use ruthenium and chromium for experiments, when the bulb was lit up, he was very happy, thinking that this material is very suitable for making the filament of the bulb, but after about a few minutes, the filament also burned out.

A few years later, Edison's failure was ridiculed by many people, who thought he was a pipe dream, especially because Edison had done a lot of failed experiments. In the face of other people's doubts and distrust, Edison did not give up the filament experiment plan, but used this as a motivation to continue his scientific experiments, so he experimented with a carbonized cotton swab as a filament material, and vacuum the bulb flower, this material still insisted for a long time, but it burned out soon after forty-five hours, but Edison was already excited, he had tried more than 6,000 experiments, and this time it was undoubtedly to find a breakthrough.

Edison began to experiment with filaments again, and he discovered that tungsten filament can be used as a material for electric lamps, for which he was ecstatic, this material is an excellent material for light bulbs, the light emitted is very bright, and it is not easy to burn out and suitable for long-term use. In this way, the light bulb slowly entered the homes of ordinary people and became a necessary lighting tool for us at night.