Why is custard a-non-newtonian-liquid?

Answer 1

Custard is considered a non-Newtonian liquid because its viscosity changes under stress or shear forces. Unlike Newtonian fluids, which maintain a constant viscosity regardless of the applied force, custard exhibits behavior where it can thicken or become more fluid depending on how it's manipulated. When mixed or stirred quickly, custard acts more like a solid, but when left undisturbed, it flows more easily. This unique behavior is due to the interactions between its starch molecules and water, which create a complex structure that responds dynamically to external forces.