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shadow zone

   Also found in: Acronyms, Wikipedia 0.01 sec.
shadow zone [′shad·ō ‚zōn]
(acoustics)
A region, usually under water or in the atmosphere, which sound waves will not reach, according to ray acoustics.
(geophysics)
The zone, between 103 and 143° from the epicenter of an earthquake, in which direct seismic waves do not arrive because of refraction and absorption by the earth's core.


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A rain shadow zone with prolonged bout of no-rainfall can effect into the formation of deserts.
[FIGURE 1 OMITTED] where [DELTA]h1 = relative wave height measured from the topside of the board [DELTA]h2 = relative wave height measured from the underside of the board b = board thickness r = solder radius in gap R = solder radius at SMD component x = solder shadow zone y = height of non-wettable component body.
As a result, unlike with conventional UV systems, there are no shadow zones.
 
 
 
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