Equation 1: Definition of shear stress. The shear rate (𝞬 ̇) quantifies how quickly the fluid layers deform or "shear" over time, typically described as the velocity gradient perpendicular to the ...

First Report on Viscosity and Plasticity. Prepared by the Committee for the Study of Viscosity of the Academy of Sciences at Amsterdam. (Verhandelingen der Koninklijke Akademie van Wetenschappen ...