👉 Non-viscousness is a concept in physics and engineering that refers to a substance or material without any viscosity, meaning it has no fluid-like properties. The term was first introduced by physicist John D. Proctor in 1935. This property distinguishes non-viscous substances from those with high viscosity, which are fluids. Non-viscous materials often have low friction and wear resistance when subjected to moderate loads or temperatures. They can also resist corrosion and serve as a good
