Viscosity (absolute ) Conversion Factors

Viscosity, specifically absolute viscosity, is a measure of a fluid’s resistance to flow. It is a fundamental property of fluids and is a key parameter in fluid dynamics. Absolute viscosity, also known simply as viscosity, is defined as the ratio of shear stress to shear rate within a fluid. 

When a fluid is subjected to a shear stress (force applied parallel to the surface), it undergoes deformation or flow. The rate at which this deformation or flow occurs is called the shear rate. Viscosity essentially quantifies how easily or how difficultly a fluid flows under an applied force.

Fluids with high viscosity, like honey or molasses, flow slowly because they offer greater resistance to shear stress. On the other hand, fluids with low viscosity, like water or gasoline, flow more easily as they offer less resistance to shear stress.

Absolute viscosity is usually measured in units of Pascal-seconds (Pa·s) or Poise (P), with 1 Pa·s equal to 10 Poise. The viscosity of a fluid may vary with temperature and pressure.

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