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Modern world can not be imagined withoutmodern amenities. Electricity, heat, energy, the Internet - take it all away from humanity, and it is unlikely to survive. But, as is known, any development requires its time and its heroes. Today, we will talk about the invention of a fluorescent lamp, without which today, no room can not do without. So:
Who invented the light bulb?
Even in antiquity, peopleattempts to create devices that could illuminate a dark room at night or a room that is underground. It is known for certain that in ancient Egypt and the Mediterranean, olive oil was used, which was placed in an earthen vessel with wicks of cotton fabric. And, for example, residents of the Caspian coast used oil in such vessels.
The first candles have replaced the clay vessels. They were invented back in the Middle Ages. They included beeswax and beef lard. For many centuries the most outstanding geniuses of the Earth worked on the creation of the first kerosene lamp. Among them, by the way, was Leonardo da Vinci.
Despite all the efforts of inventors,The design, which was safe and suitable for mass production, appeared only in the middle of the 19th century. In connection with the rapid technical progress, a quarter of a century later the first electric light bulb appeared.
The first electric candle, which graduallyturned into a light bulb, invented Pavel Nikolayevich Yablochkov. The original street lighting was carried out with the help of his device. However, the candles were not very economical, and therefore completely unprofitable. The cost of one candle was 20 kopecks, and they had to be replaced every 1.5 hours. Later, lanterns were invented, which could independently change the candle. Despite the fragility and inefficiency of an electric candle, this invention has made a significant contribution to the development of the lighting industry. Even then, this technology was used in shops and theaters, in restaurants and hotels.
In the period from 1840 to 1860, many inventorstried to create an incandescent lamp. Throughout all these years, none of the attempts has not been successful. Everyone was ready to give up on this idea. However, in 1873 there was a breakthrough in this area. Lodygin Alexander Nikolaevich invented a light bulb that could withstand all the tests. The first lamps burned for half an hour, not longer. Then they invented to pump out air from a glass bulb - this increased the service life of a light bulb. In 1873 the first two lamps of Lodygin caught fire on the streets of St. Petersburg. Lodygin invented the light bulb.
Also, the invention of a lamp is attributedAmerican inventor Thomas Edison. He created a lamp that was capable of burning for hundreds of hours without losing its energy. Edison knew about the experiments of Lodygin and knew about the shortcomings of his invention, so he set out to create a more reliable lamp. He spent 6000 experiments and, ultimately, in the final lamp design he used a carbon filament made from a strong bamboo hairs. Through his experiments, Edison experienced almost all varieties of bamboo. The main thing that was done by Edison is the opening of the production of light bulbs, which allowed the technology to be put on stream.