viscosity

Definitions

  • WordNet 3.6
    • n viscosity resistance of a liquid to shear forces (and hence to flow)
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Webster's Revised Unabridged Dictionary
    • Viscosity (Physics) A property possessed by a viscous fluid, being a resistance to the forces causing a fluid to flow, caused by interactions between the molecules of the fluid and between the fluid and the walls of the conduit through which it moves; also, a measure of such a property.
    • Viscosity The quality or state of being viscous.
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Century Dictionary and Cyclopedia
    • n viscosity The state or property of being viscous; the quality of flowing slowly, as pitch or castor-oil. Such liquids are commonly sticky, but this is no part of the viscosity.
    • n viscosity In physics, internal friction, a resistance to tire motion of the molecules of a fluid body among themselves: opposed to mobility. Thus, the viscosity of such liquids as pitch and syrup is very great as compared with that of a mobile liquid like alcohol. A slow continuous change of the shape of solids or semisolids under the action of gravity or external force is also, by extension of the name, called viscosity: as, the viscosity of ice. Viscosity is proportional to the relative velocity of strata at a unit distance. The viscosity of gases and vapors is due to the molecules shooting from one stratum to another carrying their vis viva with them. The viscosity of liquids arises from an entirely different cause, namely, from the mutual attractions of the molecules, and is diminished by the effect of the wandering of the molecules. Consequently, the viscosity of gases increases while that of liquids diminishes as the temperature is raised.
    • n viscosity A glutinous or viscous body.
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Chambers's Twentieth Century Dictionary
    • Viscosity the property of being viscous:
    • Viscosity (phys.) that property of matter which is seen when the relative motion of parts of any body or substance decays on its being left to itself
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Etymology

Webster's Revised Unabridged Dictionary
Cf. F. viscosité, LL. viscositas,
Chambers's Twentieth Century Dictionary
Low L. viscosus, sticky—L. viscum, bird-lime, mistletoe; cog. with Gr. ixos, mistletoe.

Usage

In literature:

In fact, it was rolling south and west like a wave of great viscosity.
"Over Prairie Trails" by Frederick Philip Grove
Because the spittle is without the viscosity of meat, which is wont to make the spittle of one who is full, gross and thick.
"The Works of Aristotle the Famous Philosopher" by Anonymous
Subjoined is a table giving the absolute viscosity of various gums.
"Scientific American Supplement, No. 821, Sep. 26, 1891" by Various
In sugar refining it is frequently desirable to determine the viscosity of sirups, molasses, etc.
"Scientific American Supplement, No. 832, December 12, 1891" by Various
A low degree of viscosity will suffice to permit of movements so slow.
"The Birth-Time of the World and Other Scientific Essays" by J. (John) Joly
Besides the viscose method there are several other methods of getting cellulose into solution so that artificial fibers may be made from it.
"Creative Chemistry" by Edwin E. Slosson
It is the extreme viscosity of quartz, at the heat even of an electric arc, that makes these fibers possible.
"Scientific American Supplement, No. 717, September 28, 1889" by Various
Nitro and viscose silks are more brilliant and lustrous than are real silks.
"The Story of Silk" by Sara Ware Bassett
The cream, having the heavier body or viscosity, will move more slowly.
"Outlines of Dairy Bacteriology, 8th edition" by H. L. Russell
This is because the friction and viscosity of the air robs the rings of their substance and energy.
"The Machinery of the Universe" by Amos Emerson Dolbear
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In news:

What are the values and viscosities of vanadium , sodium and aluminum.
5 fuel oil, what are the values and viscosities of vanadium , sodium and aluminum.
Gneuss' online viscometer permits continuous monitoring of the melt viscosity and the corresponding processing conditions.
The XL7 series of in-line viscometers from Hydramotion gives continuous viscosity measurement of any fluid in any process condition.
Kelheim Fibres Develops Umberto Specialty Viscose Fiber.
View Other Viscosity Meters companies.
Automatic linear piston fillers for any viscosity liquid.
Most people in the adhesives and sealants industry are aware of viscosity and realize that it characterizes the way a material will flow.
Port Brewing Old Viscosity .
A new method for measuring viscosity .
Find out how you can develop a model-based approach for viscosity control.
A model-based approach for viscosity control.
These solutions have higher viscosities than water.
"While most are the conventional, mineral-oil-based, zinc-containing type," says Guerzoni, "there also are ashless fluids —and both types are available in standard or high-viscosity-index grades.
When combined with ethanol/water mixtures, the dispersion yields a clear solution, and the viscosity in high water content levels does not rise significantly.
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In science:

There they showed that as ǫ → 0 the velocity field using a regularized viscosity converges to the velocity field using the non-regularized viscoplastic viscosity.
Linear Stability Analysis for Plane-Poiseuille Flow of an Elastoviscoplastic fluid with internal microstructure
For a one-dimensional shear flow, the tangent viscosity is defined by µt = dτxy /d ˙γxy whereas the effective viscosity is defined as µ = τxy / ˙γxy .
Linear Stability Analysis for Plane-Poiseuille Flow of an Elastoviscoplastic fluid with internal microstructure
Since the uniform limit of a sequence of viscosity solutions is also a viscosity solution, Σ0 also satisfies condition (ii) over its interior in the viscosity sense.
The Plateau Problem for General Curvature Functions
FIG. 4: (a) Beating frequency, obtained from the period of oscillations in the correlation functions of directions, versus the inverse viscosity of the medium. (b) mean modulus of velocity u as a function of the inverse viscosity of the medium.
The random walk of a low-Reynolds-number swimmer
Paczyński (2000) showed rigorously that independent of e.g., viscosity mechanism and the presence of magnetic fields, the ISCO is the universal inner disk’s edge for not too-high viscosities.
Slim accretion disks around black holes
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