The story of Albert Einstein s invention of the electric light

It is generally believed that the electric light was created by American Thomas Alva Edison.

Invented. However, another American, Henry Goebbels, had invented the reliable light bulb using the same principles and materials decades before Edison.

Before Edison, many others also contributed to the invention of the electric light. In 1801, Davy, an English chemist, electrified platinum wires. In 1810, he also invented the electric candle, which used an electric arc between two carbon rods for illumination.

In 1854, Henri Goebbels used a carbonized bamboo wire and placed it under a vacuum glass bottle to electrify and glow. His invention today appears to be the first incandescent lamp with practical utility.

At that time, he experimented with a light bulb that could last for 400 hours, but did not apply for a design patent in time.

In 1850, the Englishman Joseph Wilson Swan began working on electric light. In 1878, he obtained a patent in England for a light bulb powered by carbon filament under vacuum, and began to establish a company in England to install electric light in every home.

In 1874, two electrical technicians in Canada applied for a patent for an electric lamp. They are filled with helium under a glass bubble and glow with an electrified carbon rod. However, they did not have the financial resources to continue developing the invention, so they sold the patent to Edison in 1875.

After Edison bought the patent, he tried to improve the filament used. In 1879 he switched to carbon filament to make light bulbs, which lasted for 13 hours. By 1880, he had built a carbonized bamboo silk bulb that had managed to last for 1,200 hours in the laboratory.

But in England, Swan sued Edison for patent infringement and won. Edison's electric light company in England was forced to let Swan join as a partner. But Swan later sold his rights and patents to Edison.

In the United States, Edison's patents were also challenged. The U.S. Patent Office had ruled that his invention was antecedent.

It is invalid. Finally, after years of lawsuits, Edison obtained the patent rights for carbon filament incandescent lamps.

Edison wasn't really the inventor of the electric light? His assistant Tesla is!

It was Edison who invented the light bulb

One snowy night, Edison's mother suddenly fell ill, and his father rushed to the doctor. The doctor said, "Your mother has acute appendicitis and needs surgery."

At that time, there were only oil lamps and no electric lamps, and the light of oil lamps was very dim, and if you were not careful, you would make a mistake. Edison suddenly thought of a good solution, he brought out all the oil lamps in the house, and put a mirror behind the oil lamp, so that the doctor could complete the operation smoothly. The doctor said:

Child, you are the mother who saved you with your wits and cleverness. Edison took his mother's hand and said, "Mom, I'm going to make a night sun."

So Edison sparked the idea of inventing the light bulb.

Edison, the great inventor, invented many things during his lifetime, but it was the electric light that was immediately warmly welcomed. Because the benefits of electric light are visible and tangible. Its appearance means that people have another round of sun, and people's activities are no longer restricted by night objects.

As early as 1821, British scientists David and Faraday invented an electric lamp called an arc lamp. This type of electric lamp uses a charcoal rod as a filament. Although it can emit bright light, it is dazzling, consumes a lot of power, and does not have a long lifespan, so it is not practical.

Arc lamps are not practical, I must invent a soft light lamp, so that thousands of households can use it. Edison made up his mind.

So, he began to experiment with materials used as filaments: using traditional charcoal strips as filaments, the filaments broke as soon as the electricity was turned on. Ruthenium, chromium and other metals are used as filaments, and after being energized, they are burned off after a moment of light.

Using white gold wire as a filament is also not ideal. In this way, Edison experimented with more than 1,600 materials. After repeated experiments and repeated failures, many experts believe that the future of electric light is bleak.

Some well-known British experts even ridiculed Edison's research as "meaningless". Some journalists also reported: "Edison's ideals have come to naught.

In the face of failure, in the face of some people's cynicism, Edison did not back down. He understands that every failure means that one step closer to success.

Once, Edison's old friend Mackenzie came to visit him. Edison looked at McKenzie's long beard that shook as he spoke, and suddenly his eyes lit up, and he said, "Beard, sir, I'm going to use your beard."

Mackenzie cut a lock and gave it to Edison. Edison confidently picked a few thick mustaches, charred them, and packed them in light bulbs. Unfortunately, the results were not satisfactory.

Then try it with my hair, maybe it'll work. McKenzie said.

Edison was deeply moved by the spirit of his old friend, but he understood that hair was of the same nature as a beard, so he did not have the old man's opinion. Edison walked away, ready to see off the gracious old man. He submindedly helped the old man level out the cotton jacket he was wearing.

Suddenly, he shouted again: "Cotton thread, why don't you try cotton thread?" ”

Without hesitation, McKenzie unbuttoned his coat, tore off a piece of cotton thread, and handed it to Edison. Edison placed the cotton thread in a U-shaped closed crucible and treated it with high temperatures. Edison clamped the carbonized cotton thread with tweezers.

Prepare to pack it inside the bulb. But because the carbonized cotton thread was thin and brittle, and Edison was too nervous, the hand holding the tweezers trembled slightly, so the cotton thread was clamped off. In the end, it took a lot of effort for Edison to put a carbonized cotton thread into the light bulb.

At this time, night fell, Edison's assistant pumped the air out of the bulb, installed the bulb on the lampholder, everything was ready, and everyone quietly waited for the result. When the power is turned on, the light bulb glows golden and illuminates the entire lab. After 13 months of hard work, more than 6,000 kinds of materials were tried, and more than 7,000 tests were tested.

The electric light was invented by Edison The great inventor Edison invented many things during his lifetime, but the only one that was immediately welcomed by people was the electric light.

Hello, the inventor of the electric light was the American scientist Thomas Edison. He went through many experiments and nearly 2,000 materials before he invented the light bulb.

1. The inventor of the electric light is Edison, invention is his hobby, and the invention of the electric light is for all mankind and for himself. Contrary to popular belief, the original inventor of the electric lamp was not Edison, who improved the electric lamp.

2. As early as 1801, a British chemist named Humphrey David used platinum wire to electrify luminescence in the laboratory; In 1810, he invented the "electric candle" that used an electric arc between two energized carbon rods to illuminate the lamp. After nearly 30 years of research, another British electrical engineer, Joseph Swan, made a vacuum bulb that emits light with carbon filament electricity in December 1878.

3. Edison was greatly inspired by the report about Swan's electric light bulb. In October 1879, Edison finally succeeded in making an incandescent light bulb with carbon fiber as the filament, called the "carbide cotton silk silver hall incandescent lamp", which was subsequently put into mass production and established a company to set up corresponding infrastructure such as power stations and transmission grids, which soon made electric lights widely used in the United States. During this period, he continued to improve the technology, and finally decided to use tungsten filament as the filament, called "tungsten filament", and finalized it into use today, Edison has become recognized as the inventor of the electric light.