IMG57

Hagen-Poiseuille law

The laminar flow through a pipę is described by the Hagen-Poiseuille law, stating that the flow ratę (Q = volume of fluid flowing per unit time) is proportional to 1 the pressure difference P between the ends of the pipa and the fourth power of its radius r.

T) - viscosi<v The internat friction that causes the velocity gradien is called the viscosity

the vessel in consideration is a smali ariety or an arteriole.