# angle of incidence

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## angle of incidence

[′aŋ·gəl əv ′in·sə·dəns]
(optics)
The angle formed by a ray arriving at a surface and the perpendicular to that surface at the point of arrival. Also known as incidence angle.

## Angle of incidence

In terms of solar energy, the angle that the sun’s rays make with an imaginary line perpendicular to a surface. The angle of incidence determines the intensity of the energy that any surface experiences.

## angle of incidence

Angle of incidence is the angle between the fuselage reference line and the wing chord.
Incident rays on a surface. Two ways of measuring angle of incidence.
i. The acute angle formed between the chord line of an airfoil and the longitudinal axis of the aircraft on which it is mounted. This is the angle at which the airfoil is attached to an aircraft fuselage when the aircraft is in rigging position. Unlike the angle of attack, the angle of incidence is a fixed entity.
ii. The angle at which a ray of energy impinges upon a surface, usually measured between the direction of propagation of the energy and the perpendicular to the surface at the point of impingement, or incidence. In some cases involving radio waves, the angle of incidence is measured relative to the surface.
References in periodicals archive ?
During this work, however, we observed through simulation that the bandwidth of the resonances became broader and somewhat weaker when compensating for large angles of incidence, greater than 70[degrees] or so.
bb] measurements, obtained with and without the IS, at various angles of incidence is shown in Table 2.
p] values calculated for a single internal reflection from both ZnSe and Ge internal reflection elements at two commonly used angles of incidence.
Whereas the static flux shifts to higher values at negative angles of incidence, the dynamic flux remains low through a considerable angle.
1949), Konig (1949a, 1949b), and Beyersdoffer (1949) in the late 1940s pieced together a very concrete theory of thin film morphology at both normal and oblique angles of incidence.
The A-sandwich wall can be made to have low reflections at low to moderate angles of incidence for both polarizations.
itself must be capable of measuring the ellipsometric spectra in the spectral range uv-vis at different angles of incidence, together with the measurement in a reflective and transmission mode, se, se surface mapping and analysis of complex se.
2(b), we use a converging beam model, comprising a set of beams with angles of incidence [phi].
t] are the angles of incidence, reflection and transmission with respect to the walls of layers, respectively.
However, for the common case of an organic film on a chromium surface in an organic medium, the sensitivity for both P end A has been calculated for various angles of incidence and film thicknesses up to 1000 A.
High-performance acoustical ceiling systems rated from 180 to 200 in articulation class (AC), the measure of a material's ability to absorb sounds striking a ceiling at angles of incidence of 45 to 55 degrees.
Canon's SWC helps minimize flare and ghosting caused by bright light from large angles of incidence.

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