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Light bulb Telephone Television Radio Wheel Zero Computer fire Light bulb Telephone Television Radio Wheel Zero Computer fire. - ppt download
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The farm boy who invented television
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thermionic tube or thermionic valve Invented in about 1910, were a basic component for electronics throughout the first half of the century, which saw the diffusion of radio, television, radar, sound reinforcement
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The Farmboy Who Invented Television | Smart News| Smithsonian Magazine
