Ultrasonic studies of liquids using hole theory

Hole theory of the liquid state has been used for the study of the propagation of ultrasonic waves in some organic liquids. Expressions are obtained for the ultrasonic absorption and dispersion and their variation with temperature and pressure using the concept of holes in a liquid. Available experimental data on the temperature and pressure variation of ultrasonic absorption and dispersion in liquids has been used to verify the validity of the aforesaid expressions. It has been found that the expressions could explain the variation of velocity and absorption in associated, polyatomic, and viscous liquids fairly well. However, the applicability of these equations to nonassociated liquids, especially variation of their absorption with temperature, has been found to be quite poor. Copyright © 1976 American Institute of Physics.