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Radio: A Form Of Communication
Essay specific features
Written by:
Ruby J
Date added:
October 9, 2014
Level:
University
Grade:
A
No of pages / words:
12 / 3126
Was viewed:
7786 times
Rating of current essay:
Essay content:
Radio, on the other hand,
requires no such physical connection. It relies on the radiation of energy from
a transmitting antenna in the form of radio waves. These radio waves, traveling
at the speed of light (300,000 km/sec; 186,000 mi/sec), carry the information.
When the waves arrive at a receiving antenna, a small electrical voltage is
produced...
displayed 300 characters
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After this voltage has been suitably amplified, the original
information contained in the radio waves is retrieved and presented in an
understandable form. This form may be sound from a loudspeaker, a picture on a
television, or a printed page from a teletype machine.
HISTORY
Early Experimenters
The principles of radio had been demonstrated in the early 1800s by such
scientists as Michael Faraday and Joseph Henry...
displayed 300 characters
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