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Radar is a system used to pinpoint the location, speed, or course of an object. It can be used to track anything from aircraft to weather formations. It can also be used to detect speeding traffic, wind speed, and uneven terrain. The term RADAR is an acronym meaning Radio Detection and Ranging, although the term is now used as a single word rather than an abbreviation. The first radar patent was filed in 1904, but it wasn't until the Second War World that the system was truly used.
A radar system works by sending radio waves into the air, which are reflected back by the object and interpreted by a receiver. It has an almost unlimited range, since radio waves can be amplified using several mechanisms. There are basically five types:
What does the military use radar for?
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