Article ID: CBB001022006

From Classical to Voigt's Molecular Models in Elasticity (2010)

unapi

In the first decades of the nineteenth century the French mechanicians---Cauchy and Poisson amongst them---developed a theory of linear elasticity according to which matter is composed of material points. They believed that these points interact by means of opposite central forces, whose magnitude depends on the length of the segment joining the particles. This theory suggested that homogeneous isotropic materials were characterized by a unique elastic constant. Later experiments, however, showed that two elastic constants were necessary. These results undermined the corpuscular model of matter as well as the interpretation of elasticity in terms of central intermolecular actions. The continuous theory of Green, based on the postulate that a potential function exists, gained fresh consensus in light of these experiments. These opposite views continued throughout the nineteenth century until Woldemar Voigt proposed a molecular model confirmed by experiments. This article presents the theories of each of these scientists and describes the contrasting views of nineteenth-century mechanicians.

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Authors & Contributors
Katzir, Shaul
Kubbinga, Henk H.
Roldán Casas, José Ángel
Fera, Giuseppe
Villone, Barbara
Frisch, Uriel
Journals
Notes and Records: The Royal Society Journal of the History of Science
Ziran Kexueshi Yanjiu (Studies in the History of Natural Sciences)
Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics
Studies in History and Philosophy of Science
Physis: Rivista Internazionale di Storia della Scienza
Physics in Perspective
Publishers
Verloren
Springer
Pavia University Press
Society for Industrial and Applied Mathematics
Concepts
Physics
Atomism
Chemistry
Philosophy of science
Piezoelectricity
Molecular structure
People
Cauchy, Augustin Louis
Voigt, Woldemar
Poisson, Siméon Denis
Kelvin, William Thomson, Baron
Duhem, Pierre
Curie, Pierre
Time Periods
19th century
20th century, early
20th century
Ancient
18th century
Places
Italy
Europe
China
Great Britain
Institutions
Universität Göttingen
Universiteit van Amsterdam
Académie des Sciences, Paris
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