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angle of incidence

Also called incidence. Optics, Physics. the angle that a straight line, ray of light, etc., meeting a surface, makes with a normal to the surface at the point of meeting.
(on an airplane) the angle, usually fixed, between a wing or tail root chord and the axis of the fuselage.
Chiefly British, angle of attack (def 1).
Origin of angle of incidence
1620-30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for angle of incidence
  • Basically, the lower the angle of incidence for the basketball, the smaller the apparent size of the hole.
  • That's because the reflectivity changes with the angle of incidence but exactly how is not known.
  • The angle of incidence is the angle between the aircraft's longitudinal axis and the chord of the wing.
  • The frequency and the angle of incidence can often be changed to optimize link performance.
  • For reflection, angle of incidence equals angle of reflection.
  • The complication of the absorptivity as a function of angle of incidence enters in, however.
  • Lasers and mirrors to measure angle of incidence and reflection.
British Dictionary definitions for angle of incidence

angle of incidence

the angle that a line or beam of radiation makes with the normal to the surface at the point of incidence
another name for angle of attack
Also called rigging angle of incidence. the angle between the chord line of an aircraft wing or tailplane and the aircraft's longitudinal axis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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angle of incidence in Science
angle of incidence  
The angle formed by a ray or wave, as of light or sound, striking a surface and a line perpendicular to the surface at the point of impact.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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