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The magnet was made of 18 turns of bare copper wire (insulated wire had not yet been invented). [ 1 ] William Sturgeon ( / ˈ s t ɜːr dʒ ə n / ; 22 May 1783 – 4 December 1850) was an English electrical engineer and inventor who made the first electromagnet and the first practical electric motor .
An electrostatic generator, or electrostatic machine, is an electrical generator that produces static electricity, or electricity at high voltage and low continuous current. The knowledge of static electricity dates back to the earliest civilizations, but for millennia it remained merely an interesting and mystifying phenomenon , without a ...
German scientist Otto von Guericke invented a device that creates static electricity. This is the first ever electric generator. 1705: English scientist Francis Hauksbee made a glass ball that glowed when spun and rubbed with the hand 1720: English scientist Stephen Gray made the distinction between insulators and conductors. 1745
The three also invented the modern power distribution system: Instead of former series connection they connect transformers that supply the appliances in parallel to the main line. The first demonstrative long-distance (34 km, 21 mi) AC line was built for the 1884 International Exhibition of Turin, Italy.
Van de Graaff was the inventor of the Van de Graaff generator, a device which produces high voltages. During 1929, he developed his first such generator, producing 80,000 volts. [6] By 1933, he had constructed a larger generator generating 7 million volts. [6]
Another more complicated belt machine was invented in 1903 by Juan Burboa. [1] [5] A more immediate inspiration for Van de Graaff was a generator W. F. G. Swann was developing in the 1920s in which charge was transported to an electrode by falling metal balls, thus returning to the principle of the Kelvin water dropper. [1] [6]
Francis Hauksbee developed a more advanced electrostatic generator around 1704 using a glass bulb that had a vacuum. He later replaced the globe with a glass tube of about 2.5 feet (0.76 m) emptied of air. [1] The glass tube was a less effective static generator than the globe, but it became more popular because it was easier to use. [2]
British, scientist; 1825 – invented the electro-magnet; 1833 – built first commutated rotating electric machine that was demonstrated in London. [3] 1832–33, Hippolyte Pixii: French, instrument maker, built the first AC generating apparatus out of a rotation; and, the following year, an oscillating DC generator. [3] [5] [6] [19] 1833 ...