There are dynamic and kinematic forms of this property; the dynamic form is expressed as mass divided by length multiplied by time, where one Pascal second is equal to ten poise.
Instruments called rheometers measure this force. Isaac Newton stated this force times the velocity gradient in the perpendicular direction equals the shear stress. Stokes law contains a term equal to six pi times this force times a sphere's radius times its velocity. This force is accounted for in the denominator of Reynolds number and is variable in non-Newtonian fluids. There are dynamic and kinematic forms of this property; the dynamic form is expressed as mass divided by length multiplied by time, where one Pascal second is equal to ten poise. For 10 points, name this force that describes a fluid's resistance to movement
Instruments called rheometers measure this force. Isaac Newton stated this force times the velocity gradient in the perpendicular direction equals the shear stress.
{viscosity} or {viscous} force