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How Radiation is used in TV’s

How Radiation is used in TV’s. By Patrick Tripp. Explanation of Product. The purpose was for entertainment, and news Some television sets contain a cathode ray tube (CRT), which bounces electrons off the screen to create an image

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How Radiation is used in TV’s

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  1. How Radiation is used in TV’s By Patrick Tripp

  2. Explanation of Product • The purpose was for entertainment, and news • Some television sets contain a cathode ray tube (CRT), which bounces electrons off the screen to create an image • The interaction between the electrons and the screen can create low-level x-rays

  3. Inventors of TV’s • Television was not invented by a single inventor • Paul Nipkow invented the rotating disk • Cathode ray tube developed in 1907 by English inventor A.A. Campbell-Swinton and Russian scientist Boris Rosing. • In the 1920's, John Logie Baird patented the idea of using arrays of transparent rods to transmit images for television

  4. History of TVs • In 1908, Alan Archibald Campbell-Swinton, described how "distant electric vision" could be achieved by using a cathode ray tube as both a transmitting and receiving device (UK) • September 7, 1927, Farnsworth's Image Dissector camera tube transmitted its first image (USA) • In 1929 Farnsworth transmitted the first live human images with his system (USA)

  5. TV’s in Homes • 1936, first television broadcast made available in London • 1945, there were fewer than 7,000 working TV sets • There are now 114.7 million TV homes

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