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 incidenceclick for a larger image
Angle of incidence is the angle between the fuselage reference line and the wing chord.
angle of incidence
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 ?
As the wind incident angle increases, however, the jet destabilized and tilted, resulting in an airflow that is not purely driven by the static pressure around the opening.
When light falls normally at the disc, the half-width of the indicatrix of reflection is about 15[degrees], and when its incident angle is 10[degrees], the maximum amplitude is reduced by about 15% while the half-width increases to 18[degrees].
We use the matted semi-transparent screen, so BTDF depend only weakly on the incident angle and reflection angles.
Transmission function for straight pipes of 5 aspects ratios and with 5 incident angles of collimated rays, calculated from three different methods, with surface reflectance of 0.
It is clear from the graphs that those computed from raytracing and those from the method of Swift and Smith seem very similar and differ from those of Zastrow and Wittwer, especially for those from pipes of small aspect ratios and high incident angles of collimated rays.
The polarizer was set for s-polarization and the Seagull accessory was set for an incident angle of 55[degrees].
The FSS subreflector must maintain high reflectivity over the entire range of incident angles.
Measure the S-band performance as a function of the incident angle.
Table 1 shows the luminous values with its different lighting methods and incident angles of direct sun: direct (0 degree incident angle) + indirect, direct (higher incident angle) + indirect, and indirect.
q] for a line profile), the wavelength of the incident light [lambda], and the incident angle [theta].
Reflection intensity for two different incident angles is shown in Fig.
Kottler (7) also indicated that a highly scattering and transparent medium with a larger thickness tends to have a higher internal surface reflectance, as attributed to the increase in the range of incident angles on the internal surface created by the multiple scattering effect.