Definition of viscosity (11-28)

Question 1 of 5

Question

Area of either plate in Figure 11-34

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Review

Equation 11-28 says that the greater the viscosity $\eta$ , the greater the force that must be applied to move one plate relative to the other. The units of viscosity are pascals times seconds, or Pa $\cdot$ s for short. Viscosities are also sometimes given in poise, named for the nineteenth-century French scientist Jean Poiseuille; 1 poise equals 0.1 Pa $\cdot$ s.