Two papers. "On the Thermal Effects of Fluids in Motion" 1853 AND WITH "On the Thermal Effects of Fluids in Motion Part III"

William THOMSON and J.P. JOULE. Two papers. "On the Thermal Effects of Fluids in Motion" 1853 AND WITH "On the Thermal Effects of Fluids in Motion Part III" 1860. Both extracts from "The Philosophical Transactions". Both are crisp and clean VG. First paper: 1853, pp 357-365. Second paper: 1860, pp 325-336. [++] "The only substantial contribution to thermodynamics to which the joint names of Joule and Thomson are attached belongs to an idea conceived by Thomson, who saw the possibility of analyzing the deviations of gas properties from the ideal behavior. In particular a non-ideal gas, made to expand slowly through a porous plug so as to approximate a specified mathematical condition - constant enthalpy), would in general undergo cooling (essentially a transformation of atomic motion into work spent against the interatomic attractions). But the application of the Joule-Thomson effect to technology of refrigeration belongs to a later stage in the development of thermodynamics."--Complete Dictionary of Scientific Biography online.…