RADAR : A MIRACLE WEAPON
Radar (Radio Detection and Ranging) is an
electronic system designed to
detect and locate objects such as aircraft or ships. The system works by
sending out radio waves at very high speeds - approximately 300,000
kilometres per second. These waves reflect off solid objects, allowing them
to be "seen" by radar operators who "read" the echoes to determine the
nature of the object, its speed, and its direction of movement. Canadians
played a vital role in perfecting radar during the Second World War.
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