Viscosity The resistance of fluid flow.
Visibility The greatest distance an observer can see and identify prominent objects.
Visible light That portion of the electromagnetic spectrum from 0.4 to 0.7 µm wavelengths that is visible.
Viscosity Friction within fluids such as air and water.
Visible radiation (light) Electromagnetic radiation having wavelengths in the range of about 0.40 (violet) to 0.70 (red) micrometers.
W ...
dynamic viscosity"(Also called coefficient of molecular viscosity, coefficient of viscosity.) A fluid property defined as the ratio of the shearing stress to the shear of the motion.
Maxwell's law The statement that the viscosity of air is independent of the density of air. Mean radiant temperature The temperature at which an object gives out as much radiation as it receives from its surroundings.
The atmosphere is, of course, a compressible fluid, of low density and low viscosity, that obeys the ideal gas law to a good approximation.
If the Navier-Stokes equations of viscous flow are employed, Rayleigh's mathematical expression for the rate of viscous (or frictional) dissipation per unit volume is where m[&mgr;] is the dynamic viscosity.
In dynamics, it is that part of the stress tensor that is independent of viscosity and depends only upon the molecular motion appropriate to the local temperature and density.
The rate of change of temperature in a rising or descending saturated air parcel. The rate of cooling or warming varies but a common value of 6C per 1000 m (3.3F/1000 ft) is used. "Molecular viscosity
Monsoons(3) ...
superimposed on the primary flow, where the primary flow usually matches very closely the flow pattern predicted using simple analytical techniques and assuming the fluid is inviscid. (An inviscid fluid is a theoretical fluid having zero viscosity.) ...
 See also: Layer, Air, Pressure, Surface, Temperature
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