NemNewtoniás
nemNewtoniás is a term used to describe materials whose flow behavior does not follow Newton's law of viscosity. In contrast to Newtonian fluids, which have a constant viscosity independent of shear rate, nemNewtoniás exhibit a viscosity that changes with shear rate, time, or both. This makes their flow response more complex and often dependent on the history of applied stress.
The core distinction lies in the relationship between shear stress and shear rate. For Newtonian fluids, shear
Time-independent nemNewtoniás include shear-thinning (pseudoplastic) fluids, where viscosity decreases with increasing shear rate; shear-thickening (dilatant) fluids,
Common examples range from ketchup and paint to toothpaste, shampoos, and cornstarch–water mixtures (oobleck). NemNewtoniás are