# Thermal-conductivity sentence example

The

**thermal conductivity**of the substance is the constant ratio of the rate of transmission to the temperature gradient.Moreover, the variation of

**thermal conductivity**with temperature is small and uncertain, whereas the variation of electrical conductivity is large and can be accurately determined, and may therefore be legitimately utilized for eliminating the external heat-loss.By similar reasoning the

**thermal conductivity**of a gas should be independent of the density.Another discussed conduction in curved sheets; a third the distribution of electricity in two influencing spheres; a fourth the deter mination of the constant on which depends the intensity of induced currents; while others were devoted to Ohm's law, the motion of electricity in submarine cables, induced magnetism, &c. In other papers, again, various miscellaneous topics were treated - the

**thermal conductivity**of iron, crystalline reflection and refraction, certain propositions in the thermodynamics of solution and vaporization, &c. An important part of his work was contained in his Vorlesungen fiber mathematische Physik (1876), in which the principles of dynamics, as well as various special problems, were treated in a somewhat novel and original manner.The measurement of thermal diffusivity by laser flash is an alternative way of determining the

**thermal conductivity**of liquid alloys.AdvertisementWater has the highest

**thermal conductivity**of any liquid.We will now revisit the anisotropic

**thermal conductivity**of quartz.The high

**thermal conductivity**of the pan acts to rapidly thaw most items.His data for the

**thermal conductivity**of various metals were for long the most trustworthy at the disposal of physicists, and his determination of the ohm in terms of the specific resistance of mercury showed remarkable skill in quantitative research.In 1846 he began experiments on the temperature of the earth at different depths and in different soils near Edinburgh, which yielded determinations of the

**thermal conductivity**of trap-tufa, sandstone and pure loose sand.AdvertisementTowards the end of his life he was occupied with experimental inquiries into the laws of the conduction of heat in bars, and his last piece of work was to show that the

**thermal conductivity**of iron diminishes with increase of temperature.The

**thermal conductivity**also diminishes as salinity increases, the conductivity for heat of sea-water of 35 per mille salinity being 4.2% less than that of pure water.