Tv History

In: Computers and Technology

Submitted By dboogielegacy
Words 305
Pages 2
Television is a big part of day to day life. People often watch television anywhere from 2.5 to 5 hours a day. Televisions programing are used for communication, entertainment and education. It is impossible to credit any individuals with the credit of the actual invention of Television. There many discussions and ideas thrown around about television but when it came to building them, there were 2 types Mechanical and Electronic. Mechanical Television
The first mechanical TV systems that produced real television images were developed by John Logie Baird in England and by Charles Francis Jenkins in the US. Picture quality was very poor and the screens were only about an inch wide and was made of 30 to 60 line compared to our tvs now that are about 525 lines. The TVs used a motor to rotate a metal disk to give us picture, with a neon tube behind the disk to give us light. In 1931 there were 25 stations in the US and serveral manufactures were selling the sets. The first person to watch television was Murray Mercier from Columbus Ohio. Because of the poor picture, mechanical television was a failure and by 1933 almost all US stations were off the air. Mechanical television stayed on air in England till 1935.

Electronic Television Electronic television is based on the invention of cathode ray tube, which is the tube found in modern TVs. In 1927, Philo Farnsworth invented a special camera tube that was able to electronically transmit signals. Philo had created the first electronic television system, which did away with the rotating disks and other mechanical aspects of mechanical television. The picture being showed in these new TVs were better because they now had over 400 lines. There were still complaints on the picture because it had a greenish hue…...

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