Radio in India is largely state controlled. The second type, sky type electro-magnetic waves are beamed up into the atmosphere, from where they reflect back to earth.
The waves thus reflected are received by the aerial of the radio receiver. It converts them back into sound waves and pass on to amplifiers, to produce the original sound waves. Even illiterates can easily make use of this media to get knowledge and entertainment.
Radio has been playing a very useful role in the area of communication and it will continue to do so. Radio is no longer a luxury.
We can notice them in our radios on short wave and medium wave transmission. However, the waves that he produced could not travel long distances. The radio transmitter has an important role in the radio transmitter.
Electro-magnetic waves with frequency range of kilo hertz and kilo hertz are called radio waves. Radio is very necessary in modern wars, for the police to maintain law and order, and the spread of culture. The radio is indispensable in flying aeroplanes and sailing ships.
The ground waves or the surface waves are not effective for long distances, as they lose energy by the obstruction of hills and trees. Later inan Italian scientists by name Marconi invented electro-magnetic waves which could travel long distances carrying messages. Radio is a medium of communication.
The sound waves produced by the speaker are converted into electro-magnetic waves by the microphone.Radio has been playing a very useful role in the area of communication and it will continue to do so. Related Articles: words essay on an autobiography of a pet Dog.
Dawson’s Creek is a relatively new TV drama aimed at teenagers and the issues they face and have to deal with in society today.
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