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"THOMSON, WILLIAM (LORD KELVIN) and J.P. JOULE. - THE JOULE-THOMSON EFFECT.
Reference : 48811
(1853)
On the Thermal Effects of Fluids in Motion. Part I-II (2 Papers).
London, Richard taylor and William Francis, 1853-54. 4to. No wrappers as extracted from ""Philosophical Transactions"" 1853, Vol. 143 and 1854, Vol. 144. With titlepages to vol. 143 a. 144. The papers: pp. 357-365 a. pp. 321-364, textillustrations. The first titlepage bears the name of P.G. Tait.
First printing of these importent papers in which the authors found the so-called Joule-Thomson effect which should be the founding technology in refrigeration. They showed that a gas expanding into vacuum without addition of external work undergo a change in temperature, in spite of the theoretical speculations. The temperature change occurs due to the internal work required to overcome the attractive forces between molecules.""The only substantial contribution to thermodnamics 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 a cooling (essentially a transformation of atomic motion into work spent against the interatomic attractions). For the delicate test of this effect Thomson required Joule’s unsurpassed skill (1852). But the application of the Joule- Thomson effect to the technology of refrigeration belongs to a later stage in the development of thermodynamics.""(DSB).Peter Guthrie Tait (1831 - 1901) was a Scottish mathematical physicist, best known for the seminal energy physics textbook Treatise on Natural Philosophy, which he co-wrote with Kelvin, and his early investigations into knot theory, which contributed to the eventual formation of topology as a mathematical discipline. His name is known in graph theory mainly for Tait's conjecture. (His name on the first titlepage).Parkinson ""Breakthroughs"" 1852 C.
"THOMSON, WILLIAM (LORD KELVIN) & JAMES PRESCOTT JOULE. - THE JOULE-THOMSON EFFECT DISCOVERED.
Reference : 42715
(1853)
On the Thermal Effects of Fluids in Motion. Received June 15, - Read June 16, 1853.
(London, Richard Taylor and William Francis, 1853) 4to. No wrappers as extracted from ""Philosophical Transactions"" 1853, Vol. 143 - Part III. Pp. 357-365. Textillustrations. Clean and fine.
First appearance of this highly importent paper in the development of thermodynamics, describing the experiments leading to the discovery of the cooling effect when a gas is allowed to expand freely. This is the founding theory, later used in refrigeration.""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 appliocation of the Joule-Thomson effect to technology of refrigeration belongs to a later stage in the development of thermodynamics.""(DSB VII, p. 182).The Joule-Thomson effect or Joule-Kelvin effect describes the increase or decrease in the temperature of a real gas (as differentiated from an ideal gas) or a liquid when allowed to expand freely through a valve or other throttling device while kept insulated so that no heat is transferred to or from the fluid, and no external mechanical work is extracted from the fluid. The Joule-Thomson effect is an isenthalpic process, meaning that the enthalpy of the fluid is constant (i.e., does not change) during the process. It is named for James Prescott Joule and William Thomson, 1st Baron Kelvin who established the effect in 1852, following earlier work by Joule on Joule expansion in which a gas expands at constant internal energy. The Joule-Thomson effect is sometimes referred to as the Joule-Kelvin effect. Engineers often refer to it as simply the J-T effect.
