angle of incidence

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Related to Normal incidence: Fresnel equations, Grazing incidence

an·gle of in·ci·dence

1. the angle that a ray entering a refracting medium makes with a line drawn perpendicular to the surface of this medium;
2. the angle that a ray striking a reflecting surface makes with a line perpendicular to this surface.
Synonym(s): incident angle

angle of incidence

the angle at which an ultrasound beam hits the interface between two different types of tissues, such as the facing surfaces of bone and muscle. The angle is also affected by the difference in acoustic impedance of the different tissues.

an·gle of in·ci·dence

(anggĕl insi-dĕns)
1. Angle that a ray entering a refracting medium makes with a line drawn perpendicular to the surface of this medium;
2. Angle that a ray striking a reflecting surface makes with a line perpendicular to this surface.
Synonym(s): incident angle.

angle of incidence

the angle at which a body, object or vector is moving relative to another (e.g. a stationary surface or environmental factor such as wind), often prior to a collision. Example: when playing a snooker ball at a cushion, the angle between the ball's direction of travel and the cushion.
References in periodicals archive ?
b], the slope of the angle-dependent backscatter within 10[degrees]of normal incidence ([S.
Consider the reflection of solar radiation at normal incidence.
This paper demonstrates a technique using a normal incidence shear wave ultrasound transducer to monitor the occurrence of mechanical anisotropy caused by polymer orientation.
The effective solar properties of the drapery were estimated by applying a multiplicative factor to the solar properties of the fabric at normal incidence.
Provisions requiring special consideration for brownfield sites in areas with higher-than normal incidence of diseases or conditions associated with exposure to hazardous substances were also approved.
YOUNG children who play in gardens treated with pesticides and weedkillers have four times the normal incidence of soft-tissue cancers, according to the latest research by boffins in America.
Such normal incidence measurements provide significant information about lamellae whose normals lie in the plane of the film, but they do not provide any information about lamellae oriented in other directions.
Normal incidence solar optical properties are easily obtained, however, and a means of estimating the off-normal and diffuse properties from these is highly desirable.
Combining the very latest small spot UV Spectroscopic Ellipsometer (SE) and Normal Incidence Spectroscopic Reflectometry (SR), the Atlas XP addresses 45nm and 32nm precision and fleet matching requirements.
Given the solar optical properties at normal incidence, the semi-empirical models were developed to characterise the off-normal properties of drapery fabrics and roller blind materials (Kotey et al, 2009a, 2009b).
As a result, the Company is able to process a full complement of tissue forms for its processing clients and, in the first quarter of 2003, will be able to begin the process of reworking the tissue from the donors that it had placed in quarantine due to the higher than normal incidence of sterility failures that it had experienced toward the end of the third quarter of 2002.

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