![]() A liquid whose viscosity is less than that of water is sometimes known as a mobile liquid, while a substance with a viscosity substantially greater than water is called a viscous liquid. If the viscosity is very high, for instance in pitch, the fluid will appear to be a solid in the short term. Otherwise all fluids have positive viscosity. Zero viscosity is observed only at very low temperatures, in superfluids. A liquid's viscosity depends on the size and shape of its particles and the attractions between the particles.Ī fluid that has no resistance to shear stress is known as an ideal fluid or inviscid fluid. marble washed clean so that we don’t waste the fluids we’re dropping it through. This is also a great opportunity to practice drawing and using tables, as well as making predictions beforehand. Viscosity index improver synonyms, Viscosity index improver pronunciation, Viscosity index improver translation, English dictionary definition of Viscosity index improver. For the same velocity pattern, the stress required is proportional to the fluid's viscosity. In this viscosity experiment we attempt to refine the procedure by comparing fluids by dropping a marble through them. ![]() The resistance is also correlated with the intermolecular forces. If the particles are closer together, the fluid tends to be more viscous. This resistance is because of the way the particles are arranged. When fluid is forced through a tube, the fluid generally moves faster near the axis and very slowly near the walls, therefore some stress is needed to overcome the friction between layers and keep the fluid moving. Viscosity is the resistance of particles in a fluid to flow or move in response to an external force exerted on them. Viscosity is due to friction between neighboring parcels of the fluid that are moving at different velocities. Coefficient of viscosity definition: Viscosity is defined as the degree to which a fluid resists flow when subjected to a force it is calculated by. Viscosity of liquids in chemistry is the resistance to flow exhibited by fluids (liquids or gases) like glycerol, ester, oils, water, alcohol, and ether. For example, honey has a higher viscosity than water. For liquids, it corresponds to the informal notion of "thickness". If the concentration of water is increased, honey becomes less viscous. The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress. Honey’s viscosity depends upon the amount of water and the type and amount of sugar it contains. ![]() Freebase (0.00 / 0 votes) Rate this definition:
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