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Radio Waves

e America its start in the field of radio communication. During his 46-year career with G.E., Swedish-born Alexanderson became the company's most prolific inventor, receiving a total of 322 patents. He produced inventions in such fields as railway electrification, motors and power transmissions, telephone relay s, and electric ship propulsion, in addition to his pioneer work in radio and television. In 1904, Alexanderson was assigned to build a high-frequency machine that would operate at high speeds and produce a continuous-wave commission. Before the invention of his alternator, radio was an affair only of dots and dashes transmitted by inefficient crashing spark machines. After two years of experimentation, Alexanderson finally constructed a two-kilowatt, 100,000-cycle machine. It was installed in the Fessenden station at Brant Rock, Massachusetts, on Christmas Eve, 1906. It enabled that station to transmit a radio broadcast which included a voice and a violin solo. Alexanderson's name also will be recorded in history for his pioneer efforts in television and the transmission of pictures. On June 5, 924, he transmitted the first facsimile message across the Atlantic. In 1927 he staged the first home reception of television at his own home in Schenectady, New York, using high-frequency neon lamps and a perforated scanning disc. He gave the first public demonstration of television on January 13, 1928.The invention of the Radio and discovery of Radio waves was very important to modern culture; they were used as a basis of communication for Morse code and helped to communicate during the war. Nowadays, Radio waves are still widely used by many companies for communication. ...

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