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 is a physical property of fluids. It shows resistance to flow. In a simple example, water has a low viscosity, as it is 'thin'. Syrup or tar, on the other hand has a high viscosity, as it is 'thick, So next time you drink something think about the viscosity!. A way to test for viscosity is the speed at which the substance runs down a slope.