turbulence

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tur·bu·lence

(tŭr'byū-lĕnts),
In cardiology, erratic motion.
[L. turbulentus, stirred up, fr. turbo, to disturb]
References in periodicals archive ?
Atmospheric turbulence relevant to cruising aircraft in the upper troposphere-lower stratosphere (UTLS) is categorized into three different types based on their locations and generation mechanisms: clear-air turbulence (CAT), mountain-wave turbulence (MWT), and convectively induced turbulence (CIT; Fig.
Many large telescopes are even more handicapped by their own thermal properties than they are by atmospheric turbulence. At most locations the temperature on a clear evening falls at a rate of 2[degrees]C to 3[degrees]C per hour.
An additional property of C[PHI] is its rotational symmetry (isotropy of atmospheric turbulence), i.e., it depends only on |[DELTA]x|.
Zhao, "Probability density of the orbital angular momentum mode of Hankel-Bessel beams in an atmospheric turbulence," Optics Express, vol.
Free space optics communication through atmospheric turbulence channels.
"Bit error rate analysis of rectangular QAM/FSO systems using an APD receiver over atmospheric turbulence channels".
A major factor for inducing the distortion of vortex beam is atmospheric turbulence. The presence of atmospheric molecules, aerosols, and water mist particle will cause variety of atmospheric attenuation effects, including absorption and scattering [21, 22].
and D'Auteuil, A., "A System for Simulating Road-Representative Atmospheric Turbulence for Ground Vehicles in a Large Wind Tunnel," SAE Int.
He covers the real-time measurement of meteorological parameters for estimating low altitude atmospheric turbulence strength, comparing different models for ground-level atmospheric attenuation and turbulence strength prediction with new models according to local weather data for free space optical applications, mitigating beam wandering due to atmospheric turbulence and predicting control quality using intelligent decision making tools, low-power and compact response surface model and neural-controller design for beam wandering mitigation with a horizontal-path propagating Gaussian-beam wave: focused beam case, and quality metrics and reliability analysis of ground-to-ground free space laser communication in different weather conditions together with a beam steering system.
If large telescopes are so handicapped by atmospheric turbulence that they usually fail to resolve details beyond the capabilities of a 12- to 16-inch aperture, why do they often deliver more revealing views of the planets than smaller instruments?
Atmospheric turbulence is defined as "small-scale, irregular air motions characterized by winds that vary in speed and direction" [3].
Due to atmospheric turbulence, the mixing of hot and cold air, capturing sharp images of distant objects is difficult.

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