Respuesta :
Viscosity and temperature are closely related. As temperature rises, viscosity typically reduces in liquids but it typically increases in most gases. The models of this dependence discussed in this article include both rigorous first-principles calculations for monatomic gases and empirical correlations for liquids.
Understanding how viscosity changes with temperature is crucial for a variety of applications, such as designing lubricants that work effectively at a range of temperatures (such those found in an automobile engine). This is because lubricant performance is partially dependent on viscosity. These kinds of engineering issues lie under the ambit of tribology.
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