Viscosity and Coefficient of Viscosity and it's units
Viscosity : It is the property of liquids (or gases) by virtue of which an internal resistance or friction comes into play when a liquid is in motion. The internal friction tries to oppose the motion of the liquid and liquid comes to rest after sometime.
RelationF = - η.A. (dv)/(dx)
Where η is known as Coefficient of Viscosity and negative sign shows that the direction of viscous force is opposite to the direction of motion of liquid.
Coefficient of Viscosity (η) of a liquid may be defined as the tangential viscous force which maintains a unit velocity gradient between two parallel layers of a liquid each of unit area.
Units of Coefficient of Viscosity (η) :
In C.G.S. system, the unit of co-efficient of viscosity is poise.
In S.I. system, the unit of co-efficient viscosity is decapoise.
Coefficient of Viscosity (η) of a liquid may be defined as the tangential viscous force which maintains a unit velocity gradient between two parallel layers of a liquid each of unit area.
Units of Coefficient of Viscosity (η) :
In C.G.S. system, the unit of co-efficient of viscosity is poise.
In S.I. system, the unit of co-efficient viscosity is decapoise.
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