Fluid dynamics is the branch of physics concerning fluid flow. It is distinguishable from other disciplines in fluid mechanics as it deals with fluids in motion. In physics, a fluid is a substance ...

To understand viscosity, laminar flow must be understood. This is when a gas or fluid flowing over a surface results in the molecules next to the surface having zero speed. As the distance from the ...

Sound waves can measure viscosity on the fly. Though viscosity is the degree to which a fluid resists flow, it is more specifically a measure of a fluid's molecular friction. It can be a useful ...