terrestrial refraction


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Related to terrestrial refraction: astronomical refraction, Atmospheric refraction

terrestrial refraction

[tə′res·trē·əl ri′frak·shən]
(optics)
Any refraction phenomenon observed in the light originating from a source lying within the earth's atmosphere; this is applied only to refraction caused by inhomogeneities of the atmosphere itself, not, for example, to that caused by ice crystals suspended in the atmosphere.
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