Boiling Point and Viscosity of Gases

RECENT experimental studies1on the compressibility of liquids and liquid-mixtures indicated the existence of a connexion between the compressibility and viscosity. The usual equations representing viscosity – temperature relation of liquids do not, in any form, contain the compressibility function. After trial, it was observed that the viscosity of liquids could be well represented by an equation of the form : () where A and B are constants, and β is the adiabatic compressibility. β, at any temperature, was calculated from the supersonic velocity and the density of the liquid for that temperature.