# 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 ?
If the device was illuminated by a perfectly flat plane wave, the angle of incidence [[theta].
Summarizing, we can say that when the layer with resonance thickness has asymmetric location with respect to the edges of the structure and it is closer to the front m < (M + 1)/2 (near location of resonance layer), CMD and CMS are always positive, otherwise, when the layer of resonance thickness is closer to the end of the structure and m > (M + 1)/2 (far location of resonance layer) CMD and CMS can take negative values if the frequency and angle of incidence are in vicinity of Bragg resonance for the packets with the duration and extent which provide a rather narrow spectrum.
The angle of incidence does not affect the behavior of our filters (Figure 14).
In addition, this numerical model also took into account the internal reflection and the diffuse light which occurred in passing through the prism according to the angle of prism and the angle of incidence.
But the Earth's shape is roughly an ellipsoid, a fact that causes an extra complication: the angle of incidence of the lunar shadow with regard to the equatorial plane.
Thermopile sensor scans particular angle with output signal depending on angle of incidence.
When calculated, the size of the angle of incidence is changed by changing the direction of the incoming flow.
From one theoretical perspective, this angle of incidence falls short.
When the instrument is in reflectance mode, adjusting the angle of incidence to the sample surface is easy.
Guys, study your Euclidean geometry: The intersection of a line and a plane has a simple angle of incidence.
The study analyzes the interactions on the Moon among electrostatic adhesive forces, the angle of incidence of the sun's rays, and lunar gravity.
This model assumed that the fabric solar optical properties were independent of the angle of incidence and did not allow for direct beam transmission of solar radiation through openings in the drapery fabric.

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