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A.A. Campbell-Swinton from England and Russian scientist Boris Rosing, used ray tubes and mechanical scanner systems to make a television system. You can find this information on http://webcache.googleusercontent.com/search?q=cache:nZHLb2Yj0MMJ:www.thehistoryoftelevision.com/+tv's+history&cd=6&hl=en&ct=clnk&gl=us
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Boris Rosing and Vladimir Zworykin created a television system that useing mirror-drum scanner to transmit crude images. Moving images were not possible because the sensitivity was not enough in the scanner.
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the first screening of sillhouetted objects.
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The discovery of scanning moving images went public August 25th of 1900.
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Herbert E. Ives and Frank Gray displayed a very clear representation of tv's. They used reflected light and many other things.
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In 1927 21-year-old Philo Farnsworthm was the first electronic television picture. This information was found on http://www.emmytvlegends.org/resources/tv-history
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Baird transmitted signal over 438 miles between London and Glasgow. This making it to where when tv was aired you could view it even if you werent close by.
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On http://www.history.com/apple-tv-app it tells you tv's are still being updated now.They have new versions like apple tv's and new macs and such.