For 10 points, give this measure of a fluid's resistance to flow.
This quantity can be expressed in units of Saybolt Universal Seconds. One form of this quantity is the proportionality constant between shear stress and sheer rate; the other form of this quantity is just the first form divided by density. Those forms are the "dynamic" and (*) "kinematic" types. By Stokes' Law, this quantity is multiplied by six pi, velocity, and diameter to find the drag force on a sphere. It is measured in Poise or Stokes. For 10 points, give this measure of a fluid's resistance to flow.
This quantity can be expressed in units of Saybolt Universal Seconds.
{viscosity}