angle of incidence

(redirected from Incident angles)
Also found in: Dictionary, Thesaurus, Encyclopedia.

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 ?
As illustrated in Figure 11, positive light is being returned towards the source, whereas negative light is being returned away from the source, the boundary between them being drawn by the zero incident angle position.
For the current stage of investigation, a uniform wind velocity profile with little turbulence is required for studying the sole effect of opening sizes and wind incident angle.
One can formulate the expressions based only on the incident angle from air, [theta].
It is mentioned that vertically polarized wave experiences zero reflection at one incident angle whereas, reflection is non-zero for horizontal polarization for all angles.
For TM polarization, as shown in Figure 3, bandwidths of the passband become wider as the incident angles increase.
Wu, "Dual-band terahertz metamaterial absorber with polarization insensitivity and wide incident angle," Progress In Electromagnetics Research, Vol.
To change the incident angle, it is sufficient to rotate the sample about the vertical axis that pass through the center o, while using the second degree of freedom of the sample for adjustments.
For R = 25% (in dotted-dashed line), the decreases in ACR can be found in the range of incident angles from 90[degrees] to 135[degrees], while a slight increase occurs from 22.
At higher incident angles and for pipes with higher aspect ratios, the distributions become more uniform as is evident in Fig.
For reflection measurements, to provide a needed incident angle, a beam may pass through one of five holes in the equator of the sphere.
The hexagonal arrays of nonclose-packed bumps are similar to the structure of a moth's eyes and are designed to create a gradual change in refractive index, thus minimizing reflection over a broad range of wavelengths and incident angles.
It will work out incident angles for all the balls struck, leaving you with nothing to do other than judging the speed of the shot and keeping your hand steady.