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radar gun

a small, handheld Doppler radar device used to measure the speed of vehicles or other moving objects. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for radar gun
  • radar gun emits a continuous stream of microwaves at a preset frequency.
  • No one had a radar gun on this to find the speed of the ball.
  • The result is a radar gun display that is either totally inaccurate or blank.
  • When going across the freeway, there were exhibits about how a road is constructed and also how a radar gun works.
  • Long days in the bleachers with no companion but his radar gun.
  • They are testing an easier way to determine a ball's speed: a radar gun.
  • Or a radar trap detector and a radar gun to trigger it.
  • Then the velocity of the lava is measured with a radar gun.
  • The laser resembles a radar gun used by police to catch speeders.
  • The display operates with an internal radar gun, and indicates the speed of approaching vehicles.
radar gun in Science
radar gun  
A usually hand-held device that measures the velocity of a moving object by sending out a continuous radio wave and measuring the frequency of reflected waves. See more at Doppler effect.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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