электричество (презентация на тему электричество)

Italian Volt invented the first current source in 1800. It consisted of copper and zink vapor moinstened with water or acid. In 1820 the Danish scientist Oersted discovered the electromagnetic interaction of objects. American Franklin discovered that lightning has a purely electrical nature. The first incandescent lamp was invented by russian electrical engineering Alexander Nikolaevich Lodygin. He received a patent for invention in 1874. Ligtning appeared on the streets in the early 20^th centure after Edison invented a cheap lamp. The development of the first power plants was associated with overcoming the difficulties of not only scientific and technical nature. City authorities prohibited the construction of overhead lines because they did not want to spoil the appearance of the city. For the first time block stations were built in Paris for street lihtning. The first coverage on Russia appeared in Petersburg in 1878. It was used to loght the Mikhailovsky Manege and the Bolshoi Theater. Electricity appeared in Moscow in 1914. In 1940 the capaciry of all power plants in the country reached 11 million kilovolts. Along with development of a network of 500 kv the intoduction of a network of 330 kv began in the late 1950s. At present atomic thermal hydroelectric power plants solar installations and wind generators are engaged in the production of electicity. Переведено в гугл переводчике желательна доработка.