What Is Radar
Beginning of paper
The word "radar" was invented by scientists of the United States Navy
during World War II. The word comes from the first letters in the term
"radio detection and ranging.""Detection," as used here, means finding an
object or target by sending out a radio signal that will bounce back off
the target ....
Middle of paper
.... more than find a target. It can tell how fast and in
which direction the target is moving. This information can be used to
direct the firing of guns and missiles to protect a country against attack.
In peacetime, radar can help navigate ships, land planes in a fog, and
guide astronauts. Radar can help control street traffic and assist the
police in finding speeding automobiles.
Radar sets come in many sizes. A small set, made for use in a guided
missile, is not much larger than a cof ....
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Word count: 2203
Page count: 9 (approximately 250 words per page)
