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For a tube with a continuing fee of move, the strength of the compensating force is proportional to the fluid's viscosity.</p><br><br><span style="display:block;text-align:center;clear:both"><iframe width='640' height='360' src='https://www.youtube.com/embed/Qge9Gfa_KIA?showinfo=0&modestbranding=1&color=white' frameborder='0' allowfullscreen title='MODOFO Electric Pruning Shears - Power Through Branches with Ease (c) by ying ying'></iframe></span><p>Usually, viscosity will depend on a fluid's state, corresponding to its temperature, strain, and price of deformation. However, the dependence on a few of these properties is negligible in sure instances. For instance, the viscosity of a Newtonian fluid does not fluctuate significantly with the speed of deformation. Zero viscosity (no resistance to shear stress) is observed only at very low temperatures in superfluids; otherwise, the second legislation of thermodynamics requires all fluids to have positive viscosity. 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