angle of divergence

angle of divergence

[′aŋ·gəl əv də′vərj·əns]
(electronics)
The angular spread of an electron beam in an oscilloscope.
(navigation)
In terminal instrument procedures, the smaller of the angles formed by the intersection of two courses, radials, bearings, or combinations thereof.
(optics)
The angular spread of a light beam from a collimating device or laser.
References in periodicals archive ?
A small angle of divergence, however, implies a long diffuser and a high value of skin friction loss.
For any area ratio there must be an optimal angle of divergence at which the pressure loss is minimum.
The amount of defocussing is determined by the angle of divergence of the incident beam and distance of the focus from the receiving slit.
With a fixed angle of divergence [alpha] = 1[degrees], the effects of flat specimen error in commercial diffractometers are discernable as an increase in both the asymmetry and breadth below 2[theta] [approximately equal to] 40[degrees] [21].
For example, to maintain a fixed beam length of 20 mm on a specimen over the range 2[theta] = 0[degrees] to 90[degrees], the angle of divergence [alpha] will need to increase from 0[degrees] up to [approximately equal to]4[degrees].
Also, by reducing the angle of divergence [alpha] the defocussing [[DELTA].
Another important differentiator is the A704-5 has the widest vertical angle of divergence for light distribution in its class which can be crucial to the safety of the aircraft, the crew and the ground personnel in steep helicopter approaches angles.