RELATION BETWEEN ELECTRICAL AND THERMAL-CONDUCTIVITIES IN CHARGED CONDENSED PHASES

Data and simple theory is brought into contact for the ratio lambda/si gma T for some charged condensed phases, lambda being the thermal cond uctivity and sigma the electrical conductivity. The most extensive dat a presented is for liquid metals and deviations from the Weidmann-Fran z law are discussed. But the paper is also concerned with metal nitrat es (e.g., NaNO3) and with ionized gases and dilute plasmas. Returning to metals, cases be cited where lambda and sigma separately vary marke dly across the solid-liquid transition, while the ratio lambda/sigma T remains substantially constant.