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Radar was among the the most crucial technological breakthroughs of the 2nd Planet War. The technologies aided Britain and its allies emerge victorious during the Fight of Britain, the air war fought above Uk skies in 1940, in accordance to Imperial War Museums (IWM).  

Radar – which stands for Radio Detection and Ranging – is a detection system that takes advantage of radio waves to find objects. It is continue to widely applied currently, but as engineering has highly developed they now frequently harness microwaves, in accordance to the Earth Observing Laboratory. These are at the better frequency conclude of the radio spectrum and provide far more precise readings.