Viscosity Control FAQs from Cambridge Applied Systems,Inc. Cambridge Applied Systems, inc.
Viscosity is the resistance of a fluid to flow.
The classic definition is the ratio of shear stress to shear rate. Imagine two plates separated by a distance x, of area A, with the space between filled with a liquid. Since viscosity is the measure of a fluid's resistance to flow, it corresponds to the internal friction of a liquid and is impacted by the level of solids and the temperature of the coating, as well as other operating conditions. In general, the higher the viscosity, the slower the flow of the liquid. The measurement involved determining the time it took for the liquid to run out the hole.