Why did Edison come up with the idea to invent the light bulb?

Even if you can fall asleep, it is often very shallow and can easily wake up, resulting in poor sleep quality. So you will want to use it up.

The pre-basic technology of the lamp is immature, and the battery used to supply the power has poor performance and low voltage.

It was too dark to find a better way to illuminate.

Because he wanted to find a way to light instead of candles.

In order to be a little brighter on the operating table.

Because he's not used to the dark

Because he wanted to read and study at night.

He probably didn't think of it.

Because he wants to do it, there will be light.

I don't know why Edison thought that.

Due to the immaturity of the pre-basic technology of electric lamps at that time, the performance of the batteries used for power supply was poor and the voltage was low, and vacuum technology was not developed. Not only did Swan's electric lamps have little practical value, but they also performed quite poorly, and the poor vacuum technology always caused the carbon filaments to burn out quickly. For this reason, he has been improving his invention for 12 years.

Unable to break through the bottleneck of durability, he completely abandoned experimental work in 1860.

Edison did not invent the first electric light bulb, but invented the first incandescent lamp that could be practically used in commerce. Several of Edison's designs had been proposed by earlier inventors, including patents he purchased from Henry Woodward, Matthew Evans, Moses G. Fama, Joseph Swan, James Fort Venentsey, William Sawyer, Humphrey David, and Henry Goburg. However, the products of these inventors have some shortcomings, such as extremely short service life and high production costs, which are only suitable for laboratory testing.

In 1878, Edison applied carbonized fiber filaments as a luminescent material (which had already been used by the British inventor Joseph Swan), which greatly extended the life of the bulb. Edison absorbed the advantages of these old designs and began mass manufacturing.

Swan, who had stopped his work on electric light, was not idle, and he had become a well-known figure in the local academic circle. He was also promoted from assistant to partner in a photographic plate manufacturing company, and improved the collodion wet plate photography method of the time. Swann designed a dry photographic negative that replaced the cumbersome step of preparing nitrocellulose solutions on site with nitrocellulose plastics.

Fifteen years later, this technology inspired Eastman in the United States, who later founded Kodak.

Edison purchased Eastman's patent and improved on the design to invent a carbonized filament. Edison placed the filament in a vacuum bulb and continued to burn for an hour for the first time, and then for 40 hours.

In order to develop the light bulb, Edison often worked in the laboratory for more than ten hours a day, and he did more than 1,600 experiments on heat-resistant materials and more than 6,000 plant fibers, and finally developed a bamboo silk light bulb that could light for 1,200 hours.

The story of Edison's invention of the electric light.

At the beginning of the 19th century, people started to use gas lamps, but they were not safe and prone to accidents. Although the arc lamp was invented later, there were still many shortcomings, so Edison secretly made up his mind: "We must invent a soft electric lamp so that thousands of households can use it."

He began to study the materials of filament, from traditional carbon strips to metal ruthenium, chromium, platinum, etc., Edison experimented with more than 1,600 kinds of materials without success, in the face of people's cynicism, Edison did not give up, he firmly believed: failure is the mother of success.

In October 1879, by chance, Edison tried to put carbonized cotton thread into the bulb, after the power was turned on, the bulb emitted a golden glow, illuminating the whole laboratory, 13 months of hard work, Edison tried more than 6,000 kinds of materials, tested more than 7,000 times, and finally made a breakthrough.

The lamp was left on for 45 hours before the filament was burned. This is the first electric light with practical value in mankind. October 21, 1879 was later designated as the day of the invention of the electric light, and this day also proved that Edison's persistence was absolutely successful.

But Edison didn't stop there, he thought that 45 hours was too short, and he wanted to extend the life of the light bulb to hundreds or thousands of hours. Later, he tried to use carbonized bamboo filament as filament, and the test results showed that the effect of using bamboo filament as filament was very good, the filament was durable, and the bulb could be lit for 1200 hours. After a few decades, people changed the bamboo light bulb to a tungsten light bulb, and the life of the light bulb became longer.

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.

Edison wanted to invent the electric light, and used more than 6,000 kinds of materials and tested more than 7,000 times, but the experiments failed again and again. After the failure, Edison, who was good at summarizing, finally developed the electric light.

At the beginning of the 19th century, people used oil lamps and candles to illuminate the light, but if you are not careful, a fire can break out. In order to liberate mankind from the constraints of night, Edison decided to make electric lights to bring light to mankind.

Edison invented the electric light and conducted more than 1,500 experiments, but he did not find a suitable material for making the filament of the electric lamp. It took 1,600 experiments with heat-resistant materials and more than 600 plant fibers to create the first carbon light bulb that could burn for 45 hours at a time. Later, he continued to improve the production method on this basis, and finally Fa Sen rolled out a bamboo light bulb that could ignite the bamboo light bulb for more than 1,200 hours, which took 30 years.

Edison wasn't the one who really invented the light bulb.

Why is it said that the light bulb was not invented by EdisonThe reason why I say this is because Edison was born in 1847, and as early as 1815, the British chemist Sir Humphrey Davy invented the arc lamp using carbon filament. In the years after he invented this arc lamp, many people tried to improve his invention, but none of the improvers improved the filament that could last more than 12 hours without being burned out.

Bamboo wire lampEdison did it, though! In order to find the right filament to improve the arc lamp, Edison spent three full years of trial and error, and finally developed the bamboo wire electric lamp. After many years of using this electric lamp, it was not until the advent of tungsten electric lamp that bamboo electric lamp was finally replaced.

Edison's tremendous efforts for the light bulb are indelible, however, he was not the first to invent the light bulb.