Viscosity in liquids is the result of the friction in the liquids. Basically, when one surface slides over another surface then the elevations in one surface comes in contact with the elevations of the others and as a result friction is produced. Similarly, when the liquid layers slide over the other layers then as a result friction is produced.
The main reason and the technical word to explain this friction is viscosity. The more the viscous will be the fluid; the higher will be the friction of the liquid. As a result of higher friction, flow of the liquids decreases. For example, viscosity of water at freezing point is 1.79 mPa.s while that of glycerin is 12070 mPa.s. This makes glycerin thicker and viscous as compare to water.
The main reason and the technical word to explain this friction is viscosity. The more the viscous will be the fluid; the higher will be the friction of the liquid. As a result of higher friction, flow of the liquids decreases. For example, viscosity of water at freezing point is 1.79 mPa.s while that of glycerin is 12070 mPa.s. This makes glycerin thicker and viscous as compare to water.
