Liquid, Newtonian

Name:
Liquid, Newtonian
Detailed information:
Characteristic of liquids is their ability to flow, a property depending largely on their viscosity and sometimes also on the rate of shear. A Newtonian liquid is one that flows immediately on application of force and for which the rate of flow is directly proportional to the force applied. Water, gasoline, and motor oils at high temperatures are examples. Some liquids have abnormal flow response when force is applied, that is, their viscosity is dependent on the rate of shear. Such liquids are said to exhibit non-Newtonian flow properties. Some will not flow until the force exerted is greater than a definite value called the yield point. (W. A. Gruse)