Question

what is the unit of viscosity

Answer 1

The SI unit of kinematic viscosity is m2/s. The cgs physical unit for kinematic viscosity is the stokes (St), named after George Gabriel Stokes. It is sometimes expressed in terms of centistokes (cSt). In U.S. usage, stoke is sometimes used as the singular form.

Answer 2

Both the physical unit of dynamic viscosity in SI units, the poiseuille (Pl), and cgs units, thepoise (P), are named after Jean Léonard Marie Poiseuille.
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