RADAR

From Conservapedia

RADAR (short for Radio Detection and Ranging) is a radio-based method for detecting the existence of distant aircraft. "Radar" stands for "radio detecting and ranging," and the term was coined at the beginning of World War II. Radar was useful to the British in detecting German bombers.

Radar consists of bouncing radio waves off distant objects (such as aircraft) and processes their reflection.

Sometimes radar "tracks" are misread in the excitement, as in the American shooting down of Iran Air Flight 655 in 1988, killing all of the 290 passengers and crew aboard. That airplane was within Iranian territorial waters but approaching the American Navy.^{[Citation Needed]}