الأحد، 9 أغسطس 2009

Great Wall of China


June 1859, due to the shortened name of the name of Benjamin Hall and the then British Minister of Works, which oversaw the implementation of the project and design at the gate, and is weighing in at 12.5 tons, and installed at the Tower of London one of the most important features, which are tourists to visit.
Months, a device for measuring time in the world, and one of the most important features, which are tourists to visit in Britain. Has supervised the implementation and design of the gate of the British Minister of Works, Benjamin Hall Benjamin Hall, then, for Benjamin was a huge body, were called by the title of Big Ben, has been named in his honor at the huge bell in the post to include the same hours, and work began June 3 hours ago 1859.
Known accuracy at micro-[[measurement of the time [[, Dqatha is a symbol of the Universal Time, and weighs about three Jursha ten tons, and the total length of 9 and 14 Akrbhe forward. There are hours in the tower of St. Stephen in the northern part of the parliament building in Westminster in London, and the clock tower 320 feet in length. The design at Edmund Beckett, Edward Dent, manufacture and after his death, Frederick Dent .. Since 1924 started to beat Big Ben across the radio announces the time of «me. Me. CNN» BBC daily. And used a lot of people around the world to hear Dqatha by the BBC News bulletins. The time now about the age of a century and a half-century, in view of the old long hours remain in good condition and could be subject to sudden failure once about every seven years, and most of the accidents suffered by the minor, only one occurred in 1977, where the clock stops for all of the work It took a week-long repair. And kept all the time, the maintenance team to keep the pieces that make up the hours, as is the historical value, which is produced by some of the failures of others, and officials could replace the mechanical parts of an hour with new ones, but they do so at the fact that part of the historical heritage of Britain .. It is interesting that there has been one day that the cessation of a number of bird Zarazir Fmnaha the minute-hand to move, and in the late hours that day, did not Dqatha movement through the air .. For the first time in the history of Britain, the authorities allowed the building of the British Parliament to transfer television neighborhood for an hour which is the famous Big Ben announce the arrival of the second millennium.
And the value of human time has since ancient times is the means to measure, and this means making an hour, was passed at multiple stages until it reached to the accuracy of today. Hours and a variety of forms and sizes, throughout history, from the era of ancient Egyptian and Greek and Roman times until the present, there are at BC, solar, and then came at the water, sand Vasap. In the centuries XIV and XV centuries been making [[h mechanical | mechanical watches [[which was at hand and sobering, and in the seventeenth century AD, the first hour was the invention of the pendulum, in the nineteenth century, made at the electric, and then came in the twentieth century, quartz, then the atomic clock, which is made more precise hours so far. And spread the watch industry in the world, characterized by the quality watches Swiss watches.
Great Wall of China is the fence runs along the northern border of North and West China (People's Republic of China), Chnhuangtao from the Gulf of Bohai Sea (Yellow Sea) in the east to the Gautay in the province of Gansu in the west. Another wall has been built to the south, and spread from the area of Beijing to Handen. Built the first parts of the fence during the time of the rulers "Trkio Slakeo - Chango" The new building allows them to protect their kingdom from attacks by the northern peoples (Turkish: from left, and Mangul and Tonguz = Mencrien) and, in particular, "Hyung Hieongeno = - = No permit harm," one of the tribes permit harm the Turkish people (see: Attila). One of the rulers of the family, "Chen" and "Shi Huangdi," most parts of the construction of the wall, who is also the fear campaigns that were waged by the nomadic tribes of the northern steppe.
After the unification of China by "Qin Shi Huang" (221 BC. M) and the accelerated pace of building the fence, the work was completed in 204 BC. M, having participated in more than 300.000 people. Dynasties continued, "Han" (206 BC. M) and then "only" (589-618 m) of the construction. Contributed to the family of "Meng" (1368-1644 m) to extend and strengthen the wall, and replacement parts were built of mud, brick Bbinaat. Reached the final length of the building (6.700 km) and extended parallel to the neighboring river and formed Anhinaath terrain with mountains and hills, crossed by. Add Great Wall of China to the World Heritage List by UNESCO in 1987. The construction of the wall of mud and stones, bricks covered the eastern part. A width of 4.6 meters to 9.1 meters in the base (at 6 m), it becomes narrow in the above (3.7 m). Length was between 3 and 8 meters. Placed guard towers of the total length of 12 meters every 200 meters or so. Is the eastern side of the fence, which extends to a few hundreds of kilometers of the best preserved sections, while the remaining parts other than the simple effects.
The Wall of China is the sole teacher, which was built by man, and can examine it from space, and the Chinese space man, "Yang Liwei" confirmed this statement. Despite all the efforts made by Chinese rulers to put an end to construction, no fence required task in defending the country against attacks by the nomadic peoples (barbarians). Only invasions by warlords kings "," Zheng, who in turn were descended from one of these people, allowed the country to get rid of these threats.

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