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Reference : 500328570
ISBN : 9784091852892
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"RUMFORD, BENJAMIN COUNT (BENJAMIN THOMPSON). - THE MECHANICAL EQUIVALENT OF HEAT.
Reference : 45131
(1804)
(London, W. Bulmer and Co., 1804). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1804 - Part I. Pp. 77-182 and 2 engraved plates (showing his experimental apparatus). First and last leaves with some faint browning and brownspots. The plates with some browspots, mainly to margins. Wide-margined.
First appearance of Rumford's second large paper on the mechanical equivalent of heat, in which he owerthrows the caloric theory. Rumford's early papers were importent steps towards the conception of the principle of the ""Conservation of Energy"" and the thermodynamical laws.""The importence of this investigation here entered into, - inasmuch as it applies to most of the operations of nature as well as art, - appears so manifest, that we shall not recapitulate what the author advances on the subject. before he proceeds to the details of his experiments for the purpose oof computing the emissions of heat from various bodies under a variety of circumstances, he finds it necessary to prmise a minute description of the principal part of the apparatus he contrived for the purpose...""(Abstract).In his famous paper of 1798 ""An Inquiry Concerning the Source of Heat Which is Exicited by Friction"" showed that heat is a form of motion and not a substance as it was seen in the 18th century.""He had been lead to the hypothesis that friction is an inexhaustable source of heat while considering the boring of a canon at Munich's military arsenal and had proceeded to experiment with brass guns at the arsenal. The experiments confirm the hypothesis, justifying his conclusion that heat is not a material substance as others had believed. He goeson to equate heat to motion.""(Parkinson in ""Breakthroughs"" 1798 P.)
"FOURIER, (JEAN BAPTISTE JOSEPH). - TOWARDS THE ANALYTICAL THEORY OF HEAT.
Reference : 41346
(1816)
(Paris, Crochard, 1816, 1817,1817,1820, 1824, 1824, 1825). Without wrappers as issued in: ""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago."". Vol. 3, pp. 350-375. - Vol. 4, pp. 128-145. - Vol. 6, pp. 259-303. - Vol. 13, pp. 418-38. - Vol. 27, pp. 136-167. - Vol. 27, pp. 236-281. - Vol. 28, pp. 337-365.
All first edition and first appearances of papers forecasting the more elaborated theories which he published in his famous work ""La Therorie analytique de la chaleur. 1822"". His analytical mathematical method, that any continous function can be represented as a sum of sine and cosine curves, is here applied to physical problems f.i. his treatment of the warming (and cooling) of the earth and terrestrial temperatures (f.i. the papers offred here no.1, 2, 4, 5 a. 6). The theory of terrestrial temperatures played a central role in Fourier's mathematical physics..An. 1. Description of the 4to volume, which was afterwards published in 1822 without the chapters on radiant heat, the solar heat as it effects the earth, the comparison of analysis with the experiment, and the history of rise and progress of the theory of heat. As such the paper contains importent applications and results not described in ""Theorie analytique...1822.""An. 2. This is a mathematiccal sketch on the sine law of emission of heat from a surface. The authors paradox on the hypothesis of equal intensity of emission in all directions, is here proved.An. 3. An elegant physical treatise on the discoveries of Newton, Pictet, Wells, Wollaston, Leslie and Prevost.An. 4. A Sketch of a memoir, mathematical and descriptive, on the waste of the earth's initial heat.An. 5. A descriptive memoir, read before the Academy 20. a. 29. Sept 1824 and later published in ""Memoires de l'Academy..."", Tome VII, 1827.An. 6. An elementary analytical account of surface-emissions and absorption based on the principle of equilibrium of temperature. This paper comes with Poisson's ""Observations relatives à un Mémoire sur l'Equilibre d'une masse fluide, inséré dans la Transactions philosophique de cette année."" Pp. 225-236.An. 7. An elementary analysis of emissionn, absorption and reflexion by walls of enclosure uniformly heated. At p. 364, Fopurier, promises a ""Theorie physique de la chaleur"" to contain the applications of the ""Theorie analytique"" omitted in teis work published 1822.
"HELMHOLTZ, HERMANN von. - THE PRELUDE TO ""ÜBER DIE ERHALTUNG DER KRAFT"" AND HIS FIRST PAPER ON FORCE CONSERVATION
Reference : 45604
(1847)
Berlin, G. Reimer, 1847. Contemp. hcalf, profusely gilt spine. Light wear along edges. XXXII,622 pp. In: ""Fortschritte der Physik im Jahre 1845. Dargestellt von der physikalischen Gesellschaft zu Berlin"". I. Jahrgang. Redigirt von G. Karsten. XXXII,622 pp. A stamp on titlepage. Helmholtz's paper: pp. 346-355. Clean and fine.
First appearance of this milestone paper which represents the first, and most importent, step towards his great work laid down in ""Über die Erhaltung der Kraft"", 1847. This is Helmholtz' FIRST PAPER ON THE CONSERVATION OF FORCE""At the beginning of October, 1846, Helnmholtz sent a 'Report on Work done on the Theory of Animal Heat for 1845', at du Bois' request, to the ""Fortschritte der Physik"", issued by the Physical Society. (the paper offered). This was merely an abstract from the article in the Encyclopaedic Dictionary.....BUT IT ANTICIPATES MORE DEFINITELY THE CONDCLUSIONS OF HIS GREAT WORK. He states without hesitation that the material theory of heat is no longer tenable, and that a kinetic theory must be substituted for it, since heat originates in mechanical forces, either directly by friction, or indirectly from an electrical current produced by themotion of magnets. This conception of heat as a motion involves the conclusion that mechanical, electrical and chemical forces must always be the definite equivalent of one and the same energy, whatever the mode by which one force is transformed into another. The empirical confirmation of this law must be the imperative duty of physicists and physiologists.""(Leo Koenigsberger in ""Hermann von Helmholtz"", pp. 34-35).""In the ""Fortschritte der Physik"" for 1845, which appeared in 1847, Helmholtz published a report on theories of physiological heat which he later acknowledged as belonging to his work on the conversation of force.""(Jungnickel & McCormach ""Intellectual Masteryof Nature, Vol. 1, p. 157).
(London, Taylor and Francis, 1864). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1864 - Vol. 154 - Part II. Pp. 201-225., textillustrations.
First printing of a pioneer work in the investigation of the manner in which different gases and liquids conduct heat, and the high absorptive and radiative power of aqueous vapor.""In 1859, Tyndall began the importent series on ""Radiant Heat..."", for which he received the Rumford Medal in 1869 and produced his classic work, Heat considered as a Mode of Motion (1863). (Bibliotheca Mechanica). - See Milestones of Science No 191.
(London, Taylor and Francis, 1864). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1864 - Vol. 154 - Part II. Pp. 327-368, textillustr. Clean and fine.
First printing of a pioneer work in the investigation of the manner in which different gases and liquids conduct heat, and the high absorptive and radiative power of aqueous vapor. The two textillustrations shows his experimental equipment.Prior to Tyndall it was widely surmised that the Earth's atmosphere has a Greenhouse Effect, but he was first to prove it. The proof was that water vapor strongly absorbed infrared radiation.""In 1859, Tyndall began the importent series on ""Radiant Heat..."", for which he received the Rumford Medal in 1869 and produced his classic work, Heat considered as a Mode of Motion (1863). (Bibliotheca Mechanica). - See Milestones of Science No 191.