We construct a closed-form expression for the self-diffusion constant, D, for a hard-sphere particle whose mass and radius are large compared to the corresponding bath-particle quantities. The expression yields the Stokes-Einstein law at high bath-particle densities and the Boltzmann form for...

Self-diffusion coefficients of methane and carbon tetrafluoride were measured by the pulsed NMR method in three dense-gas mixtures of methane and carbon tetrafluoride having 0.25, 0.50 and 0.75 mole fraction of methane. The measurements were made at temperatures between 0°C and 75°C and...

The balance equation of the specific area of a discontinuity surface is derived and the effect of this balance on the formulation of the hypothesis of local equilibrium is discussed.

Experiments have been performed to study the influence of a magnetic field on the Dufour effect (or diffusion-thermo effect) in an equimolar N2Ar mixture at room temperature. By comparing these experimental results with those obtained previously for the field effect on the thermal diffusion,...

This work contains a discussion of the Vlasov approximation for the system of particles interacting not only via the pair-wise central potential, but also via the velocity dependent interactions (V.D.I). The VDI are assumed to be similar in nature to those encountered in the classical plasma...

In three papers (1902–1904), Albert Einstein developed the essential principles of the statistical mechanical approach to thermodynamics before he was twenty-five years old. Einstein's work was inspired by Ludwig Boltzmann's Vorlesungen über Gastheorie, but it was completely independent of J....

A cluster series is established for the cooperative Jahn-Teller-T-e and theT-t-systems in the simple cubic and square lattices. We calculate the phase transition temperature Tc, the specific heat and the “susceptibility” in zero order and in 2-site cluster approximation. Additionally in the...

The compressibility isotherms of ethylene are presented at temperatures from 0° up to 150°C and at densities up to 500 amagat, the maximum pressure being 2900 atmospheres.

Simple expressions are derived for the time dependent correlation functions of certain phase functions of the classical linear (harmonic) chain having arbitrary masses and force constants. This is done for a statistical distribution τ (H, P) in phase space depending arbitrarily on the energy H...

A theoretical study of rotational relaxation of spherical-top molecules in an inert gas is presented. Under the assumption that the molecules and atoms collide as rough spheres, two previous theoretical methods obtained apparently conflicting results. These two methods are shown to be in...