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"DULONG, (PIERRE) & (ALEXIS) PETIT. - THE ""LAW OF DULONG AND PETIT"" ANNOUNCED.
Reference : 43914
(1817)
Recherches Sur la Mesure des Températures et sur les Lois de la communication de la chaleur. Introduction. (+) Suite des Recherches sur la Mesure des Témperatures..... Seconde Partie. Des Lois du Refroidissement. (+) Suite Des Recherches sur la Mesure...
Paris, Crochard, 1817. Contemp. hcalf, richly gilt spines. Light wear at top of spine. Minor scratches to edges. Small stamps on verso of titlepages and verso of plates. In: ""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago."", tome 7, 2e Series. 448 pp. a. 2 engraved plates. (the entire volume offered). Dulong & Petit-papers: pp. 113-154, pp. 225-264, pp. 337-367. Clean and fine.
First edition of these 3 groundbreaking papers with the first appearance in print of THE LAW OF THE CONSTANCY OF ATOMIC HEAT, i.e. the specific heat multiplied by the atomic weight. The insight had far reaching implications as it showed a new way to Dalton's atomic theory.""In 1815 Dulong's famous collaboration with the mathematical physicist Alexis Therese Petit began"" it produced three importent memoirs on heat."" (the papers offered here). The 2 first was awarded the price of the Academy in 1818 and was leading up to the last paper in which they formulted the ""Law of the Constancy of product of atomic weight and specific heat""""They (Dulang and Petit) were concerned with the specific heats of elements"" but if these elements really existed as atoms, it seemed possible that there might be a connection between trhe weight of the atom and the amount of heat aquired to raise the temperature of a given weight of that element by a certain amount."" (DSB). - ""One of his (Dulong) most importent researches was made in collaboration with Alexis Thérese Petit (1791-1820), with whom he announced the law that the product of atomic weight and specific heat is constant (1819). It rendered a distinct service in fixing atomic weights, especially when these were in question, and enabled Berzelius and later Cannizzaro to arrive at correct atomic weights and the correct number of atoms in molecules."" (Leicester & Klickstein, A source Book in Chemistry 1400-1900, p. 273). - Parkinson, Breakthroughs (1819).
"DULONG, (PIERRE) & (ALEXIS) PETIT. - THE ""LAW OF DULONG AND PETIT"" THE CONNECTION BETWEEN ATOMIC WEIGHT AND ATOMIC HEAT ESTABLISHED.
Reference : 47356
(1817)
Recherches Sur la Mesure des Températures et sur les Lois de la communication de la chaleur. Introduction. (+) Suite des Recherches sur la Mesure des Témperatures..... Seconde Partie. Des Lois du Refroidissement. (+) Suite Des Recherches sur la Mesure...
Paris, Crochard, 1817 a. 1819. Bound in one contemp hcloth (vol. 7) and 1 issue without wrappers. In: ""Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago."", Vol. 7 and vol. 10, Cahier 4. - 448 pp. a. 2 engraved plates (entire vol. 7 offered) + pp. 337-443 a. 2 engraved plate (entire issue offered, Cahier 4 of vol. 10 with htitle to the vol.). Dulon & Petit's papers: pp. 113-154, pp. 225-264, pp. 337-367 and Vol. X, pp. 395-413.
First edition of these 4 groundbreaking papers with the first appearance in print of THE LAW OF THE CONSTANCY OF ATOMIC HEAT, i.e. the specific heat multiplied by the atomic weight. The insight had far reaching implications as it showed a new way to Dalton's atomic theory. ""In 1815 Dulong's famous collaboration with the mathematical physicist Alexis Therese Petit began"" it produced three importent memoirs on heat."" (the papers offered here). The 2 first was awarded the price of the Academy in 1818 and was leading up to the last paper in which they formulted the ""Law of the Constancy of product of atomic weight and specific heat""""They (Dulang and Petit) were concerned with the specific heats of elements"" but if these elements really existed as atoms, it seemed possible that there might be a connection between trhe weight of the atom and the amount of heat aquired to raise the temperature of a given weight of that element by a certain amount."" (DSB). ""One of his (Dulong) most importent researches was made in collaboration with Alexis Thérese Petit (1791-1820), with whom he announced the law that the product of atomic weight and specific heat is constant (1819). It rendered a distinct service in fixing atomic weights, especially when these were in question, and enabled Berzelius and later Cannizzaro to arrive at correct atomic weights and the correct number of atoms in molecules."" (Leicester & Klickstein, A source Book in Chemistry 1400-1900, p. 273). Parkinson, Breakthroughs (1819).
"DULONG, (PIERRE) & (ALEXIS) PETIT. - THE ""LAW OF DULONG AND PETIT""
Reference : 49242
(1819)
Researches on the Measure of Temperature, and on the Laws of the Communication of Heat.
London, Baldwin, Cradock, and Joy, 1819. 8vo. Contemp. hcalf. Marbled boards. Spine lacks and boards loose. In: ""Annals of Philosophy"" or Magazine of Chemistry, Mineralogy, Mechanics... By Thomas Thomson"". Vol. XIII. XCII,486 pp. a. 6 engraved plates. (Entire volume offered). Some brownspots to the plates. Iternally clean. A small stamp in upper right corner of two leaves. Dulong & Petit's paper: pp. 112-124, 161-182, 241-251, 321-339 a. 1 engraved plate.
First appearance in English of this, their (first) joint paper, which initiated the recheches leading to the the ""Law of Dulong and Petit"", the connection between atomic weight and atomic heat. The original Frensh having the title: Recherches sur les lois de dilation des solides, des liquides et des fluides élastiques, et sur la mesure exacte des temperatures.""""In 1815 Dulong’s famous collaboration with the mathematical physicist Alexis Thérèse Petit began"" it produced three important memoirs on heat (of which this is the first). The best-known part of this work is the statement of the law of constant atomic heats that bears their names, .... They began with the fundamental problem of measuring quantities of heat, which involved a critical analysis of thermometric scales. In 1804-1805 Gay-Lussac had carried out a comparison of mercury and air thermometers between 0°C. and 100°C. Dulong and Petit extended the range of comparison up to 300°C. and found an increasing discrepancy between the two scales at higher temperatures."" (DSB).
