Types of Propaganda


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Television is the process of capturing photographic images, converting them into electrical impulses, and then transmitting the signal to a decoding receiver. Conventional transmission is by means of electromagnetic radiation, using the methods of radio.
Among the technical developments that have come to dominate our lives, television is surely one of the top few. In the developed world, the average household watches television for seven hours per day, which helps to explain why news, sports, and educational entities, as well as advertisers, value the device for communication.
The device we call the television is really an image and sound receiver that is the end point of a broadcast system that starts with a television camera or transmitter and requires a complicated network of transmitters using ground-based towers, cables, and satellites to deliver the original picture to our living rooms.
TV came like a bang as the time distance between the invention of radio and television is not much. People across the world were still amazed by the presence of radio in their lives that within years they were having a device which also showed images with sound – a great fun indeed.
How it started?

The electronic way of communication was quite well known by the start of the 20th century but in almost all cases it was limit to sending or receiving voice messages. Since most researchers and scientists were focusing on the voice transmission, the radio broadcast resulted almost simultaneously in many parts of the world with the exception of a difference of few years. The name of Marconi, however, stands distinguished in the eyes of many as the inventor of radio.

The inventor of television, the device responsible for receiving voice as well as images, is John Logie Baird of Scotland. But obviously the new invention has been the result of the extensive work done by scores of other scientists as well. The development of the television occurred over a number of years, in many countries, and using a wide application of sciences, including electricity, mechanical engineering, electromagnetism, sound technology, and electrochemistry. No single person invented the television; instead, it is a compilation of inventions perfected by fierce competition.

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