visciedad
Visciedad is a nonstandard term used in some contexts to denote viscosity, the internal resistance of a fluid to flow due to internal friction. In standard usage, this property is described as viscosity and is central to rheology and fluid dynamics. Viscosity exists in two related forms: dynamic viscosity (μ) and kinematic viscosity (ν = μ/ρ), where ρ is density.
Dynamic viscosity's SI unit is the pascal-second (Pa·s); the older CGS unit is the poise. 1 Pa·s
Viscosity varies with temperature and composition. For example, water at 20 °C has about 1.0 mPa·s, while
Measurement methods include rotational viscometers (such as cone-plate and parallel-plate configurations), capillary viscometers (e.g., Ostwald, Ubbelohde),
See also: viscosity, rheology, Newtonian fluid, non-Newtonian fluid.