Non-newtonian fluids are substances that do not follow Newton's law of viscosity, meaning their viscosity can change under different conditions of stress or shear rate. Unlike Newtonian fluids, which have a constant viscosity regardless of the applied force, non-newtonian fluids can behave more complexly, exhibiting properties like shear-thinning or shear-thickening. This unique behavior affects how these fluids transport heat and matter, making them crucial in various applications from industrial processes to biological systems.
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