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. The viscosity of a liquid is a measure of the difficulty which molecules have passing each other in a fluid. It is dependent upon the size and shape of the molecules and by the magnitude of the cohesive forces and intermolecular bonds such as hydrogen bonding. Spherical molecules have less flow resistance than long molecules which can become entangled. Very viscous liquids tend to be long chained molecules.