The sub-title of this symposium is accurate and, in a curious way, promises more than it states: Classical Physicist, Modem Philosopher. Heinrich Hertz, as the con summate experimentalist of 19th century technique and as brilliant clarifying critic of physical theory of his time, achieved one of the fulfilments but at the same time opened one of the transition points of classical physics. Thus, in his 'popular' lecture 'On the Relations Between Light and Electricity' at Heidelberg in the Fall of 1889, Hertz identified the ether as henceforth the most fundamental problem of physics, as the conceptual mystery but also the key to understanding mass, electric ity, and gravity. Of Hertz's demonstration of electric waves, Helmholtz told the Physical Society of Berlin: "Gentlemen! I have to communicate to you today the most important physical discovery of the century. " Hertz, philosophizing in his direct, lucid, pithy style, once wrote "We have to imagine". Perhaps this is metaphysics on the horizon? In the early pages of his Principles of Mechanics, we read A doubt which makes an impression on our mind cannot be removed by calling it metaphysical: every thoughtful mind as such has needs which scientific men are accustomed to denote as metaphysical. (PM23) And at another place, concerning the terms 'force' and 'electricity' and the alleged mystery of their natures, Hertz wrote: We have an obscure feeling of this and want to have things cleared up.

Autorentext

Alfred Nordmann is Professor of Philosophy at Technische Universität Darmstadt. He has translated and edited works by Wittgenstein and is president of the Lichtenberg Society.

Klappentext

This first major collection of essays devoted to Heinrich Hertz (1857-1894) brings together an international group of physicists, philosophers, and historians of science. It includes investigations of Hertz's background, his theoretical and experimental contributions, his philosophy of science, and his influence on science and philosophy in the twentieth century. Its central focus is Hertz's Principles of Mechanics of 1894 which develops the methodological intuitions that also informed his earlier discovery of electromagnetic wave radiation (so-called radio waves). Though his proposed reform of mechanics was not adopted, the book proved influential on physicists like Einstein, Schrödinger, Bohr, and Heisenberg, and on philosophers like Cassirer, Schlick, and Wittgenstein. It can be regarded as an ancestor of Thomas Kuhn's Structure of Scientific Revolutions, it anticipated current discussions on the role of models in science, and it represents an important chapter in the history of conventionalism. Audience: Philosophers of science, historians of science, Wittgenstein scholars, historians and philosophers of technology, physicists, electrical engineers, and mathematicians.

Inhalt
Hertz, Helmholtz and Their Experimental Culture.- Heinrich Hertz and the Berlin School of Physics.- From Helmholtz's Philosophy of Science to Hertz's Picture-Theory.- The Loss of World in the Image: Origin and Development of the Concept of Image in the Thought of Hermann von Helmholtz and Heinrich Hertz.- Electrodynamics and the Discovery of Electromagnetic Waves.- Heinrich Hertz's Experiments and Experimental Apparatus: His Discovery of Radio Waves and His Delineation of their Properties.- Hertz's Study of Propagation vs. Rutherford's Study of Structure: Two Modes of Experimentation and their Theoretical Underpinnings.- On Hertz's Conceptual Conversion: From Wire Waves to Air Waves.- The Principles of Mechanics.- Hertz's View on the Methods of Physics: Experiment and Theory Reconciled?.- Hertz and the Geometrization of Mechanics.- Hertz's Principles.- Everything could be different: The Principles of Mechanics and the Limits of Physics.- Hertz's Influence on Twentieth Century Science and Philosophy.- The Reception of Heinrich Hertz's Principles of Mechanics by His Contemporaries.- Heinrich Hertz's Mechanics: A Model for Werner Heisenberg's April 1925 Paper on the Anomalous Zeeman Effect.- Heinrich Hertz's Picture-Conception of Theories: Its Elaboration by Hilbert, Weyl, and Ramsey.- Hertz's Philosophy of Nature in Wittgenstein's Tractatus.- Postscript.- Reflections on Hertz and the Hertzian Dipole.- Heinrich Hertz: A Bibliography.- Concordance and Index of Passages.- Index of Names.