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About 700 thousand spectators visited the biggest in Europe Rock Concert.
The Festival called ”Rock above Volga“, was based in 2009 in Samara region. Volga is the name of the longest river in Europe. The Festival is held in the beginning of June. This year it was on the 8th of June.
The best representatives of Russian and foreign rock music took part in the festival. Russian groups: “Smyslovye galutzinatzii”, “B-2”, ”Chizh&Co”, ”Picnik”, “Akvarium”, ”Kipelov” and ”Alice” brought their new songs and compositions.
Foreign musicians come to the festival every year. World stars as : Deep Purple, Scunk Anansie, Tarja Turunen, Apocalyptica, the British rocker Ken Hensley, the French singer Isabelle Geffroy(ZAZ), American groups Garbagge and Limp Bizkit took part in it.
The German band Rammstein was a headliner of the festival this year. They brought their famous show to Russia.
On the next day the German group traveled by the ship along the river Volga. Then they visited the village Shiryaevo, located on the bank of the river Volga. Villagers dressed in folk clothes met musicians. They had tea with pancakes and jam from green fir cones.
More than 1,4 million of people have visited the Festival during five years. This is the biggest open-air concert in the world. About 700 thousand spectators visited the Festival this year.

Винайдення телевізора

Television, as you know is a complex technical process. Its origins go back to the past. We can confidently say that a huge number of people involved in its development and improvement.

Thus, the TV wasn't invented by one person.

The chain of events that led to the invention of television, started in 1817, when the Swedish chemist Jens Berzelius opened chemical element selenium. It was later found that the amount of electric current, is selenium, depends on the amount of light that affect it. This property is called «фотоелектрикою».

In 1875, this discovery helped American inventor, Kerry make the first imperfect television system, for which he has used photovoltaic cells. The subject is focused through a lens unit PV cells in such a way that each element seems to «monitor» the amount of electricity flowing in incandescent lamp. Dim outline of the object, which спроецьований for photovoltaic applications, then appeared on the surface of the filament lamp.

The next step was the invention in 1884 Floors Ніпкоу «deployed image». This was achieved by means of a disk with openings that rotates in front of the photoelectric elements and different disc that rotates in front of the audience. But the principle was the same as that of Kerry.

In 1923 performed the first practical transfer of images by wire, and made it a bird in England and Jenkins in the United States.

Then there was a huge leap in the development of television cameras. Vladimir Zworykin and Phil Farnsworth independently designed the camera, known as «інконоскоп» and «зображально-transmitting tube». Until 1945 both transmitting tubes were replaced with newer.

In modern TV is a so-called «a cathode ray tube». In this tube is the electron gun that scans an image of the screen just as the rays do it in передаючій a television camera, and as a result we see the image.

Of course, this does not explain to you, in detail, exactly how acts TV, but gives you an idea of how many different discoveries were to be realized by different people in different countries, to make possible the current TV.