View source for Atmospheric Refraction

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'''Atmospheric Refraction'''
 
<BR/>
[[Refraction|Refraction]] resulting when a ray of radiant energy 
passes obliquely through an 
[[Atmosphere|atmosphere]].
<BR/> '' It may be called &quot;astronomical refraction&quot; if
the ray enters the atmosphere from outer space, or &quot;terrestrial
refraction&quot; if it emanates from a point on or near the surface
of the earth. ''  


==References==
''This article is based on NASA's [[NASA SP-7|Dictionary of Technical Terms for Aerospace Use]]''
[[Category%3ADefinitions]]
[[Category%3ANASA SP-7]]