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.
Reason
I like this image because it easily demonstraights the principle of radar, and it looks apealling to the eye. I found this by accident last night while checking out pages for the heck of it.
Articles this image appears in
Radar
Creator
commons:User:Pierre_cb
Nominator
TomStar81 (Talk)

Not promoted MER-C 12:38, 7 January 2007 (UTC)[reply]