Terrestrial Scintillation
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Terrestrial Scintillation
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Generic term for scintillation
phenomena observed in light that reaches the eye from sources lying within the
earth's atmosphere; to be differentiated from astronomical
scintillation which is observed in light from extraterrestrial sources
such as stars. Also called atmospheric boil, atmospheric shimmer, shimmer,
optical haze. Terrestrial scintillation is produced by irregular
refraction effects due to passage, across the line of sight, of air parcels
(schlieren) whose densities differ slightly from that of their surroundings.
Density irregularities with dimensions of the order of centimeters, or at most
decimeters, are responsible for most such scintillatory effects. [[/a>|/a>
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References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use