Who invented the Television?

Who invented the Television?
Highlights

Who Invented the Television. Television was not invented by one man alone. The chain of events leading to the invention of the television began in 1871, when a Swedish chemist called Jons Berzelius discovered the chemical element \"selenium\".

Television was not invented by one man alone. The chain of events leading to the invention of the television began in 1871, when a Swedish chemist called Jons Berzelius discovered the chemical element "selenium". Later it was found that the amount of electric current selenium would carry depending upon the amount of light which struck it.

This property is called photo electricity. In 1875, G R Carey of the United States used photoelectric cells to make the first crude television system. As an object was focused through a lens onto a bank of photoelectric cells, the crude image could be seen in the lights on the bank of bulbs. In 1884, Paul Nipkow invented "the scanning disk" which revolved in front of the photoelectric cells, and another one revolved in front of watchers.

It caused not much improvement over Carey's device. In 1923, Baird of England and Jenkins of United States brought the first practical transmission of pictures over wires. Thereafter, great improvements were done in television cameras. Vladimir Zworykin and Philo Farnsworth each developed a type of camera, one known as "the iconoscope” and the other as "the image dissector". In 1945, both of these camera pick up tubes were replaced by "the image orthicon" Modern television sets today, however use a picture tube called "cathode-ray tube". In this tube, there is an electric gun which scans the screen in the same way as the beam does in the camera tube to enable us to see the picture.

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