# angle of incidence

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## 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 ?
The combined spanwise average Nusselt number for the rectangular wing at an angle of attack of [beta] = 26[degrees] and Reynolds number 100 is 35.
L] at an acute angle of attack of 15[degrees], whereas the models with partial thumb abduction showed a maximum value of [C.
By using the collected data, with the aid of our algorithm, when the optimum sail angle of attack [[alpha].
max] = 4500 ps-deg, an angle of attack variation rate [absolute value of [alpha]] [less than or equal to] 10[degrees]/s, and a flight path angle variation rate [absolute value of [gamma]] [less than or equal to] 2[degrees]/s.
To compensate, the tail must exert greater downward force, thus increasing its angle of attack still more and causing it to work nearer to its performance limit.
There are three main reference calibrations that need to be performed after installation, including one at zero airspeed, one at cruise alpha and another at a high angle of attack.
The detection of the angle of attack is based upon a noise spectrum analysis in the wheel-rail contact and the use of GPRS and GPS technologies.
The angle of attack, angular acceleration and angular velocity for the entire fin surface.
The overall test objective was to evaluate the Block 30 F-16's ``high angle-of-attack'' - nose-high - handling, resistance to uncontrollable flight, and recovery characteristics with the pylon and decoys attached to the aircraft, said Jeff Chen, the squadron's Taiwan High Angle of Attack project engineer.
Its value is different for each shape and angle of attack, the angle between the relative wind and the chord of the wing.
Creating the right upward angle of attack, you will put less backspin, enjoying a perfect, long ball-flight.

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