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Principle of radar: The radar emits a burst of energy (green). If the energy strikes an object (rain drop, bug, bird, etc), the energy is scattered in all directions (blue). A small fraction of that scattered energy is directed back toward the radar.

Principe du radar: émission d'une impusion dònde radaio très intense mais brève, l'énergie frappe une cible et un petite portion de l'énergie est retournée au radar.

Source: from NOAA web site

Public domain This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration.


The following pages on the English Wikipedia link to this file (pages on other projects are not listed):
  • Radar
  • Wikipedia:Featured picture candidates/Radar
  • Wikipedia:Featured picture candidates/January-2007