strobe light

Science Dictionary
strobe light  
A lamp that produces very short, intense flashes of light by means of an electric discharge in a gas. The ability of strobe lights to "freeze" the motion of rapidly moving objects by making them visible for only a fraction of a second makes them very useful in photography and in measuring vibration and other types of high-speed motion.
American Heritage
Science Dictionary
strobe   (strōb)  Pronunciation Key 
  1. A strobe light.

  2. A stroboscope.

  3. A spot of higher than normal intensity in the sweep of an indicator on a scanning device, as on a radar screen, used as a reference mark for determining the position or distance of the object scanned or detected.


stroboscope   (strō'bə-skōp')  Pronunciation Key 
Any of various instruments used to observe moving objects by making them appear stationary, especially with pulsed illumination or mechanical devices that intermittently interrupt observation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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