scale of viscosity
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Viscosity index — is a petroleum industry term. It is a lubricating oil quality indicator, an arbitrary measure for the change of kinematic viscosity with temperature. The viscosity of liquids decreases as temperature increases. The viscosity of a lubricant is… … Wikipedia
Scale analysis (mathematics) — Scale analysis is a powerful tool used in the mathematical sciences for the simplification of equations with many terms. First the approximate magnitude of individual terms in the equations is determined. Then some negligibly small terms may be… … Wikipedia
Viscosity — For other uses, see Viscosity (disambiguation). Viscosity The substance above has lower viscosity than the substance below SI symbol: μ, η SI unit: Pa·s … Wikipedia
viscosity index — noun : an arbitrary number assigned as a measure of the constancy of the viscosity of a lubricating oil with change of temperature such that a high index indicates that the viscosity changes little with temperature * * * Auto., Mach. an arbitrary … Useful english dictionary
viscosity — a stock throughout its area of distribution does not have complete and instantaneous mixing of individuals. A fishery on one area of a stock will impact the whole stock on a time scale and to a degree that is a function of the stock s viscosity … Dictionary of ichthyology
viscosity index — Auto., Mach. an arbitrary scale for lubricating oils that indicates the extent of variation in viscosity with variation of temperature. [1935 40] * * * … Universalium
viscosity index — viscos′ity in dex n. mac aum an arbitrary scale for lubricating oils that indicates the extent of variation in viscosity with variation of temperature … From formal English to slang
Foil (fluid mechanics) — A foil is a surface designed to maximize lift (force generated perpendicular to the fluid flow) while minimizing drag (force generated in the direction of the fluid flow) in a given range of conditions. Foils may be designed to operate in any… … Wikipedia
gas — gasless, adj. /gas/, n., pl. gases, v., gassed, gassing. n. 1. Physics. a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid. 2. any such fluid or mixture of fluids. 3. any… … Universalium
fluid mechanics — an applied science dealing with the basic principles of gaseous and liquid matter. Cf. fluid dynamics. [1940 45] * * * Study of the effects of forces and energy on liquids and gases. One branch of the field, hydrostatics, deals with fluids at… … Universalium
amorphous solid — ▪ physics Introduction any noncrystalline solid in which the atoms and molecules are not organized in a definite lattice pattern. Such solids include glass, plastic, and gel. Solids and liquids (liquid) are both forms of condensed… … Universalium
