Definition:Dynamic Viscosity

Definition

The dynamic viscosity of a fluid is the coefficient $\eta$ appearing in the equation governing viscosity:

$F = \eta A \dfrac u y$

Symbol

$\eta$

The usual symbol used to denote the dynamic viscosity of a fluid is $\eta$.

Its $\LaTeX$ code is \eta .

Dimension

The dimension of measurement of dynamic viscosity is $\mathsf {M L^{-1} T^{-1} }$.

Units

The SI unit of measurement of dynamic viscosity is the pascal second.

The CGS unit of measurement of dynamic viscosity is the poise.