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angle of incidence
(redirected from Grazing angle)

   Also found in: Medical, Encyclopedia, Wikipedia 0.03 sec.

angle of incidence

Angle between a ray of light striking a surface (incident ray) and the normal to that surface. For a mirror it is equal to the angle of reflection.



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? Mentioned in ? References in periodicals archive
 
7-11) The second, more specialized technique is an external reflection approach undertaken at grazing angle of incidence, which is often referred to as RAIRS (Reflection-Absorption Infrared Spectroscopy), (12) or some other similar acronym.
It provides enough detail to allow aircraft on an airfield to be located and counted from a long stand-off range, but the grazing angle must be large enough to avoid excessive masking of features.
9 fireball entered the atmosphere at a grazing angle, it lasted long enough for people in several states to videotape it for as long as 22 seconds, Hawkes says.
 
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