An examination of the sources Helmholtz drew upon for his formulation of the conservation of energy and the impact of his work on nineteenth-century physics. In 1847, Herman Helmholtz, arguably the most important German physicist of the nineteenth century, published his formulation of what became known as the conservation of energy--unarguably the most important single development in physics of that century, transforming what had been a conglomeration of separate topics into a coherent field unified by the concept of energy. In Helmholtz and the Conservation of Energy, Kenneth Caneva offers a detailed account of Helmholtz's work on the subject, the sources that he drew upon, the varying responses to his work from scientists of the era, and the impact on physics as a discipline. Caneva describes the set of abiding concerns that prompted Helmholtz's work, including his rejection of the idea of a work-performing vital force, and investigates Helmholtz's relationship to both an older generation of physicists and an emerging community of reformist physiologists. He analyzes Helmholtz's indebtedness to Johannes Müller and Justus Liebig and discusses Helmholtz's tense and ambivalent relationship to the work of Robert Mayer, who had earlier proposed the uncreatability, indestructibility, and transformability of "force." Caneva examines Helmholtz's continued engagement with the subject, his role in the acceptance of the conservation of energy as the central principle of physics, and the eventual incorporation of the principle in textbooks as established science.

"The Lives of Machines is intelligent, closely argued, and persuasive, and puts forth a contention that will unsettle the current consensus about Victorian attitudes toward the machine." ---Jay Clayton, Vanderbilt University Today we commonly describe ourselves as machines that "let off steam" or feel "under pressure." The Lives of Machines investigates how Victorian technoculture came to shape this language of human emotion so pervasively and irrevocably and argues that nothing is more intensely human and affecting than the nonhuman. Tamara Ketabgian explores the emergence of a modern and more mechanical view of human nature in Victorian literature and culture. Treating British literature from the 1830s to the 1870s, this study examines forms of feeling and community that combine the vital and the mechanical, the human and the nonhuman, in surprisingly hybrid and productive alliances. Challenging accounts of industrial alienation that still persist, the author defines mechanical character and feeling not as erasures or negations of self, but as robust and nuanced entities in their own right. The Lives of Machines thus offers an alternate cultural history that traces sympathies between humans, animals, and machines in novels and nonfiction about factory work as well as in other unexpected literary sites and genres, whether domestic, scientific, musical, or philosophical. Ketabgian historicizes a model of affect and community that continues to inform recent theories of technology, psychology, and the posthuman. The Lives of Machines will be of interest to students of British literature and history, history of science and of technology, novel studies, psychoanalysis, and postmodern cultural studies. Cover image: "Power Loom Factory of Thomas Robinson," from Andrew Ure, The Philosophy of Manufactures (London: Charles Knight, 1835), frontispiece. DIGITALCULTUREBOOKS: a collaborative imprint of the University of Michigan Press and the University of Michigan Library