van der Waals surface tension formula

van der Waals surface tension formula

[′van dər ‚wȯlz ′sər·fəs ‚ten·chən ‚fȯr·myə·lə]
(thermodynamics)
An empirical formula for the dependence of the surface tension on temperature: γ = Kpc Tc (1 -T/Tc ) n , where γ is the surface tension, T is the temperature, Tc and pc are the critical temperature and pressure, K is a constant, and n is a constant equal to approximately 1.23.