How do ideas become accepted by the scientific community? How and why do scientists choose among empirically equivalent theories? In this pathbreaking book translated from the Italian, Marcello Pera addresses these questions by exploring the politics, rhetoric, scientific practices, and metaphysical assumptions that entered into the famous Galvani-Volta controversy of the late eighteenth century. This lively debate erupted when two scientists, each examining the muscle contractions of a dissected frog in contact with metal, came up with opposing but experimentally valid explanations of the phenomenon. Luigi Galvani, a doctor and physiologist, believed that he had discovered animal electricity (electrical body fluid existing naturally in a state of disequilibrium), while the physicist Alessandro Volta attributed the contractions to ordinary physical electricity. Beginning with the electrical concepts understood by scientists in the 1790s, Pera traces the careers of Galvani and Volta and explains their laboratory procedures. He shows that their controversy derived from two basic, irreducible interpretations of the proper nature of a common domain: Galvani saw the frog phenomenon as the work of biological organs, Volta as that of a physical apparatus. The initial preference for Volta's theory, maintains Pera, depended not on clear-cut methodological rules, but on a dialectical dispute for which the renowned physicist was better equipped, partly because he shared the dominant metaphysical views of his time. Originally published in 1991. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

How do ideas become accepted by the scientific community? How and why do scientists choose among empirically equivalent theories? In this pathbreaking book translated from the Italian, Marcello Pera addresses these questions by exploring the politics, rhetoric, scientific practices, and metaphysical assumptions that entered into the famous Galvani-Volta controversy of the late eighteenth century. This lively debate erupted when two scientists, each examining the muscle contractions of a dissected frog in contact with metal, came up with opposing but experimentally valid explanations of the phenomenon. Luigi Galvani, a doctor and physiologist, believed that he had discovered animal electricity (electrical body fluid existing naturally in a state of disequilibrium), while the physicist Alessandro Volta attributed the contractions to ordinary physical electricity. Beginning with the electrical concepts understood by scientists in the 1790s, Pera traces the careers of Galvani and Volta and explains their laboratory procedures. He shows that their controversy derived from two basic, irreducible interpretations of the proper nature of a common domain: Galvani saw the frog phenomenon as the work of biological organs, Volta as that of a physical apparatus. The initial preference for Volta's theory, maintains Pera, depended not on clear-cut methodological rules, but on a dialectical dispute for which the renowned physicist was better equipped, partly because he shared the dominant metaphysical views of his time.

Originally published in 1991.

The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These paperback editions preserve the original texts of these important books while presenting them in durable paperback editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

The Renaissance was not just a rebirth of the mind. It was also a new dawn for the machine. When we celebrate the achievements of the Renaissance, we instinctively refer, above all, to its artistic and literary masterpieces. During the fifteenth and sixteenth centuries, however, the Italian peninsula was the stage of a no-less-impressive revival of technical knowledge and practice. In this rich and lavishly illustrated volume, Paolo Galluzzi guides readers through a singularly inventive period, capturing the fusion of artistry and engineering that spurred some of the Renaissance's greatest technological breakthroughs. Galluzzi traces the emergence of a new and important historical figure: the artist-engineer. In the medieval world, innovators remained anonymous. By the height of the fifteenth century, artist-engineers like Leonardo da Vinci were sought after by powerful patrons, generously remunerated, and exhibited in royal and noble courts. In an age that witnessed continuous wars, the robust expansion of trade and industry, and intense urbanization, these practitioners-with their multiple skills refined in the laboratory that was the Renaissance workshop-became catalysts for change. Renaissance masters were not only astoundingly creative but also championed a new concept of learning, characterized by observation, technical know-how, growing mathematical competence, and prowess at the draftsman's table. The Italian Renaissance of Machines enriches our appreciation for Taccola, Giovanni Fontana, and other masters of the quattrocento and reveals how da Vinci's ambitious achievements paved the way for Galileo's revolutionary mathematical science of mechanics.

The Second Empire lasted longer than any French regime since 1789, yet most historical accounts of the government of Napoleon III have been overshadowed by the knowledge of its disastrous and tragic end. As Professor Plessis shows in this detailed thermatic study, such an approach ignores the major social, economic, and political developments of a period that witnessed the gradual acceptance of univeral suffrage, the establishment of large-scale industrial capitalism, a massive improvement in communications, and the birth of impressionism in art.