Digestion Essay The path of digestion begins in the mouth when food is broken down mechanically, into smaller pieces, by the teeth and tongue. The complex carbohydrates found in the food are also broken down chemically with the help of the enzyme (ptyalin), found in saliva.
apparent viscosity. (fluid mechanics). The value obtained by applying the instrumental equations used in obtaining the viscosity of a Newtonian fluid to viscometer measurements of a non-Newtonian fluid. 1  Facebook. 2  Twitter.
Viscosity and density are two properties of liquids and gases (or referred as fluids). They are very useful physical quantities when it comes to describing statics and dynamics of these substances.Viscosity and density alone can describe more than half the properties of a fluid.Viscosity. Viscosity is defined as a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. In more common words, viscosity is the âinternal frictionâ of a fluid.Itâs also referred as the thickness of a fluid. Viscosity is simply the friction between two layers of a fluid when the two layers move relative to each other. Sir Isaac Newton was a pioneer in fluid mechanics.iscosity and density are two properties of liquids and gases (or referred as fluids). They are very useful physical quantities when it comes to describing statics and dynamics of these substances.