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Reference Terms
from Wikipedia, the free encyclopedia


RADAR is a system used to detect, range, and map objects such as aircraft, ships, and rain.

Powerful radio waves are transmitted, and a receiver listens for any echoes.

By analysing the reflected signal, the reflector can be located, and sometimes identified.

Note:   The above text is excerpted from the Wikipedia article "Radar", which has been released under the GNU Free Documentation License.
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Matter & Energy News
February 26, 2017

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updated 12:56 pm ET