An Examination of the Relationship between Sound Velocity and Density in Liquids

Abstract

The "constants" of Rao and of Carnevale and Litovitz are re-examined and their similarity to a pseudo-Grüneisen parameter is demonstrated. Another empirical relationship, viz. the velocity of sound in liquids as a linear function of density, is presented. Extrapolations of such a relationship might prove useful in the study of the velocity of sound in the critical region and in the polycrystalline solid at 0 °K.