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Essay's paper info
Topic: Science
Number of pages / Number of words: 3 / 713
Essay's paper body

This

keeps the energy spent by a shortwave transmitter

from escaping into space. This is why we are able

to receive shortwave from such a great distance.

Sound is changed into radio waves at a radio

broadcast station. The microphone, which is used,

changes the sound into an electrical current. The

transistors in an amplifier increase the strength of

the current...


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The

transistors in an amplifier increase the strength of

the current. Then, the current goes into the

transmitter which is connected to an antenna. The

antenna sends out the radio waves. Although

broadcast waves are almost constantly

surrounding us, they can only be sensed by a

similar antenna...


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