What is Stoke in viscosity?
Units for Kinematic Viscosity One stoke is equivalent to one poise divided by the density of the fluid in g/cm3. The SI unit for kinematic viscosity is square meters per second (m2/s). However, due to the viscosity values of most common fluids, square centimeters per second (cm2/s) is used more often.
Is stoke a unit of viscosity?
The physical unit for kinematic viscosity is the stokes (St), named after George Stokes. It is sometimes expressed in terms of centistokes (cS or cSt); 1 stokes = 100 centistokes = 1 cm2 s−1 = 0.0001 m2 s−1.
What is Stokes unit?
The stoke (British “stokes”), a unit of kinematic viscosity in the centimetre-gram-second system, was named after him in 1928.
What is Stokes Law in simple definition?
1 : a law in physics: the frequency of luminescence excited by radiation does not exceed that of the exciting radiation. 2 : a law in physics: the force required to move a sphere through a given viscous fluid at a low uniform velocity is directly proportional to the velocity and radius of the sphere.
What is CGS unit of viscosity?
A poise is the centimetre-gram-second (cgs) unit of viscosity.
What are units of viscosity?
The unit of viscosity is newton-second per square metre, which is usually expressed as pascal-second in SI units.
What is the SI unit of viscosity poiseuille?
Pascal-second (symbol: Pa·s) This is the SI unit of viscosity, equivalent to newton-second per square metre (N·s m–2). It is sometimes referred to as the “poiseuille” (Pl). One poise is exactly 0.1 Pa·s. One poiseuille is 10 poise or 1000 cP, while 1 cP = 1 mPa·s (one millipascal-second).
What is Newton law of viscosity?
Newton’s law of viscosity defines the relationship between the shear stress and shear rate of a fluid subjected to a mechanical stress. The ratio of shear stress to shear rate is a constant, for a given temperature and pressure, and is defined as the viscosity or coefficient of viscosity.
What do you mean by viscosity?
Viscosity is a measure of a fluid’s resistance to flow. It describes the internal friction of a moving fluid. A fluidwith large viscosity resists motion because its molecular makeup gives it a lot of internal friction.
What is the medical definition of a Stoke?
Medical Definition of stoke. : the cgs unit of kinematic viscosity being that of a fluid which has a viscosity of one poise and a density of one gram per cubic centimeter.
How is Stokes law related to viscosity of liquid?
Stoke’s law was established by an English scientist Sir George G Stokes (1819-1903). When a spherical body moves down through an infinite column of highly viscous liquid, it drags the layer of the liquid in contact with it. As a result, the body experiences a retarding force. Then according to Stokes law, the viscous drag force,
Which is the unit of kinematic viscosity Stokes?
The unit of kinematic viscosity is Stokes, named after the British physicist, Sir George Gabriel Stokes. A stoke is defined as one centimeter squared per second. If you wish to learn more physics concepts with the help of interactive video lessons, download BYJU’S – The Learning App.
What is the unit of measurement for Stoke?
a basic unit in the CGS system, equal to the viscosity of a fluid, measured in poises, divided by the density of the fluid, measured in grams per cubic centimeter (0.0001 square meter per second): abbrev. St. Origin of stoke.
