👉 A soft fluid, also known as a viscous fluid or non-Newtonian fluid, is a type of substance that exhibits both liquid-like and solid-like properties. Unlike traditional liquids, which flow smoothly without resistance, soft fluids can change their viscosity in response to applied stress or shear forces. This means they can become more fluid under pressure, like when you squeeze a bottle of ketchup, or more rigid and resistant to flow, like when you try to push a thick syrup. Examples include blood, which behaves as a soft fluid in the circulatory system, and certain types of polymer solutions or suspensions. This unique behavior makes soft fluids essential in various applications, from industrial processes to biological systems.
