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2019-11-06 08:56:12
HELMHOLTZ, Hermann.
Über die Erhaltung der Kraft, eine physikalische Abhandlung, vorgetragen in der Sitzung der physikalischen Gesellschaft zu Berlin am 23sten Juli 1847.
Berlin: Georg Reimer, 1847. First edition. First edition, rare, of "the first comprehensive statement of the first law of thermodynamics: that all modes of energy, heat, light, electricity, and all chemical phenomena, are capable of transformation from one to the other but are indestructible and cannot be created" (PMM). "On the basis of this short paper, written when he was only twenty-six, Helmholtz is ranked as one of the founders, along with Joule and Mayer, of the principle of conservation of energy. The paper sets forth the philosophical and physical basis of the energy conservation principle: Helmholtz maintained that the scientific world view was based on two abstractions, matter and force, and since the only possible relationship that can exist among the ultimate particles of matter is a spatial one, then ultimate forces must be moving forces radically directed. This can be inferred from the impossibility of producing work continually from nothing. Helmholtz analyzed different forms of energy and different types of force and motion, grouping them into two categories, active (kinetic) and tension (potential). He also gave mathematical expression to the energy of motion, providing an experimental measure for research on all forces, including those of muscle physiology and chemistry" (Norman). "Intended expressly for 'physicists,' Helmholtz's 1847 paper must be counted as one of the most impressive first publications in the history of physics. Helmholtz had the highest regard for the principle he developed there, speaking of it fifteen years later, for example, as the … [Click Below for Full Description]
Bookseller: SOPHIA RARE BOOKS [Denmark]

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