Part 1

Unlike person to person communication, mass media communication is
communicating to a large number of people. Radio is one way to communicate sunde,
without wires. Radio signals are sent through the air. At a radio station, sounds create
vibrations in microphones, which change these into electric currents. Radio transmitters
broadcast the radio signals in all directions. The transistor radio is really a radio receiver
The cassette recorder has a transmitter for it to function as a radio, too. An antenna receives
the radio signals. The speaker changes the electric currents into sound vibrations. Television
is communication with sounds and pictures with or without wires. At a TV station, cameras
change light into electric currents. These currents are changed into patterns of light or video
signals. Like in radio communication, microphones change sounds into electric currents
which are later converted back to sound or audio signals. The video and audio signals are
combined into television signals and are broadcast by the transmitter. The antenna of your
TV sets receives television signals from different stations. Today, however, cable TV
innovation has made it possible for audio and video to travel in cables, Cable TV is better
since signals do not travel in the air.

summary

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main action or body:

conclusion:

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