We report here on an ongoing study of a self-defining community of physicists whose work spans an interestingly diverse set of subjects, typically in the borderland between macroscopic and microscopic description and between quantum and classical domains. Its methods are typically semi-classical. It is this borderland—of people, subject, and methods—in which we are primarily interested and which we will attempt to characterise. For concreteness, we will focus on the subset of ‘quantum chaos’ and more particularly on the work that the (...) physicists Eric Heller and Steven Tomsovic have called ‘postmodern quantum mechanics’, using their characterisation to ground a somewhat more expansive interpretation. (shrink)

This collection addresses a post-WWII shift in the hierarchy of scientific explanations, where the highest goal moves from reductionism towards some ...

The ArgumentThe societal context within which science is pursued generally acts as a productive force in the generation of knowledge. To analyze this action it is helpful to consider particular modes of mediation through which societal concerns are projected into the very local and esoteric concerns of a particular domain of research. One such mode of mediation occurs through material systems. Here I treat two such systems – the steam engine and the electric telegraph – in the natural philosophy of (...) William Thomson (Lord Kelvin).The steam engine illustratesconceptualmediation. It simultaneously instantiates “labor value” in political economy and “work” in engineering mechanics, thereby identifying the two concepts in the region of their common reference. The partial identification carries with it a structural analogy between a network of concepts from political economy and a similar network in natural philosophy, providing a potent heuristic for the reformulation and further development of dynamics.The electric telegraph illustratesmethodologicalmediation. It projects the interests of engineering and industry into the interests of electromagnetic theory and vice versa, thereby establishing, in Thomson's view, a Baconian unity of truth and utility. As the common reference of theory and practice, the telegraph locates the truth of theoretical knowledge in its utility and the utility of practical knowledge in its truth.These particular cases of conceptual and methodological mediation indicate how the local practices, concepts, and interests of a research specialty, or subculture, draw on and are adapted to those of the larger culture within which they develop. Thus the analysis of mediation leads to an ecological model of the social construction of scientific knowledge. (shrink)

The traditional mode of explanation in physics via deduction from partial differential equations is contrasted here with explanation via simulations. I argue that the different technologies employed constitute different languages, which support different sorts of narratives. The narratives that accompany simulations and articulate their meaning are typically historical or natural historical in kind. They explain complex phenomena by growing them rather than by referring them to general laws. Examples of such growth simulations and growth narratives come from the evolution of (...) wave functions in quantum chaos, snowflake formation, and Etruscan genetics. The examples suggest a few concluding remarks on historical explanation. (shrink)

ABSTRACT An overview of some of the main modes of making images of natural objects and processes, as they have appeared in the history of science, leads to two main conclusions. First, the dichotomies that have traditionally distinguished, for example, art from science, museums from laboratories, and geometrical from algebraic methods have produced a poverty of understanding of visualization. It is at the intersections of these dichotomies where much of the creative work of science occurs, and it is into those (...) intersections that this Focus section leads us. Second, the section suggests that we need to understand images as arguments. Generalizing, we need to develop a “materialized epistemology” that reunites sensual with ideational knowing. Recent work in the history of science is already pointing the way and producing a dramatically new historiography. (shrink)

Physicists regularly invoke universal laws, such as those of motion and electromagnetism, to explain events. Biological and medical scientists have no such laws. How then do they acquire a reliable body of knowledge about biological organisms and human disease? One way is by repeatedly returning to, manipulating, observing, interpreting, and reinterpreting certain subjects—such as flies, mice, worms, or microbes—or, as they are known in biology, “model systems.” Across the natural and social sciences, other disciplinary fields have developed canonical examples that (...) have played a role comparable to that of biology’s model systems, serving not only as points of reference and illustrations of general principles or values but also as sites of continued investigation and reinterpretation. The essays in this collection assess the scope and function of model objects in domains as diverse as biology, geology, and history, attending to differences between fields as well as to epistemological commonalities. Contributors examine the role of the fruit fly Drosophila and nematode worms in biology, troops of baboons in primatology, box and digital simulations of the movement of the earth’s crust in geology, and meteorological models in climatology. They analyze the intensive study of the prisoner’s dilemma in game theory, ritual in anthropology, the individual case in psychoanalytic research, and Athenian democracy in political theory. The contributors illuminate the processes through which particular organisms, cases, materials, or narratives become foundational to their fields, and they examine how these foundational exemplars—from the fruit fly to Freud’s Dora—shape the knowledge produced within their disciplines. Contributors Rachel A. Ankeny Angela N. H. Creager Amy Dahan Dalmedico John Forrester Clifford Geertz Carlo Ginzburg E. Jane Albert Hubbard Elizabeth Lunbeck Mary S. Morgan Josiah Ober Naomi Oreskes Susan Sperling Marcel Weber M. Norton Wise. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:NOTES AND DISCUSSIONS 161 2) You wish him to become what he is not, and no longer to be what he is now (literally: what he is now, no longer to be [283d 2-3]). 3) You wish for his death, since you wish him no longer to be (283d 5-6). The obvious way of dealing with this argument is to make precisely the distinction made by the author of (...) the Dissoi Logoi at V, 15: we should say to Dionysodorus, "Your conclusion that the friends of Cleinias wish for his death is the result of an illegitimate step: you went from 'you wish him not to be ignorant' to 'you wish him not to be'. To have made this step is to have ignored the distinction between existence with respect to some particular thing, i.e., ignorance, and existence in general." (A later critic might point out to Dionysodorus that he has confused the copulative and existential uses of the verb "to be.") It now becomes possible to return to the question, which of the two formulations, (a) or (b), does the author of the Dissoi Logoi presuppose? On the basis of the Euthydemus passage, it seems likely that he presupposed both. The conclusion of Dionysodorus' argument is (b), that Cleinias does not exist, but his conclusion is based upon (a) that Cleinias both is (ignorant) and is not (wise). The Euthydemus passage shows clearly that the words "if someone denies that the man exists" are considerably less of a non sequitur than might first appear. CONCLUSmN. The fallacy-solving distinction of Dissoi Logoi, u 15 was probably understood by Plato~ although not clearly formulated until Aristotle. How is this fact to be assimilated? Is the Dissoi Logoi (or at least this section) much later than has hitherto been presupposed? Or have scholars simply failed to credit its author with this important distinction? Until we have additional studies of the treatise, further discussion would be premature. ROSAMOND KENT SPRAGUE University o] South Carolina HUME'S A LETTER FROM A GENTLEMAN, A REVIEW NOTE In his biography of David Hume, E. C. Mossner notes that on May 21, 1745 there appeared in two Edinburgh newspapers the following advertisement: This Day will be published, and sold by the Booksellersin Town, A LETTER from a Gentlemanto his Friend at Edinburgh: containing some Observations on a Specimenof the PrinciplesconcerningRELIGION and MORALITY, said to be maintain 'd in a Booklately published,intituled, A Treatiseo] Human Nature, &c.I This Letter, Mossner discloses, was sent by David Hume to his friend Henry Home (later Lord Kames), and its publication was, he suggests, the "last 7A later passagein the Euthydemus, 293b ft.,in whichSocratesuses obstructive tactics when the sophistswish to movefrom "knowingx" to "knowingsimpliciter" seems to me to point in this direction.See R. K. Sprague,Plato's Use o] Fallacy (London, 1962),22-23, and passim on secundumquid. 1See The Li]e o] David Hume (Edinburgh: Thomas Nelson & Sons, Ltd., 1954), pp. 153162,esp.p. 160. 162 HISTORY OF PHILOSOPHY frantic effort" by Hume's friends to stem the rising opposition to his appointment to the vacant chair of Ethics and Pneumatical Philosophy at Edinburgh University. Mossner was obliged to report further, however, not only that this effort had been in vain, but also that what "may well constitute an important document in the further interpretation of some aspects of the Treatise" has "never been located." z Now a copy of the Letter has been located. It was purchased from a Birmingham bookseller in December, 1966, by the National Library of Scotland. And, with admirable celerity, a facsimile edition of it has been published by the Edinburgh University Press. Adding still further to the value of this important discovery is the accompanying Introduction which describes the events, parties, and personalities which occasioned the Letter. The editors tell us that John Pringle first offered to resign his chair of philosophy in June, 1744, two years after he had taken leave to accept the position of Physician-General to the British forces in Flanders. He sent his offer to John Coutts, Lord Provost of Edinburgh, and Courts, in turn, suggested to Hume that he apply. Had Pringle not delayed... (shrink)

Victorian physics meets industrial capitalism Content Type Journal Article Pages 1-6 DOI 10.1007/s11016-011-9554-0 Authors Bruce J. Hunt, History Department, University of Texas at Austin, 1 University Station B7000, Austin, TX 78712-0220, USA Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.

In 1637 a Frenchman named Noël Duret published a book in Paris that referred to the heliocentric Copernican system. In 1660 an Ottoman scholar named Ibrahim Efendi al-Zigetvari Tezkireci translated the book into Arabic. For more than three centuries this manuscript was buried in an Ottoman archive in Istanbul until it resurfaced at the beginning of the 1990s. The discovery of the Arabic text has necessitated a re-evaluation of the history of early modern Arabic natural philosophy, one that takes into (...) account the intellectual context of Ibrahim Efendi and the overarching trends in the world of Sufi mysticism. These trends were reflected in art, literature, philosophy and natural philosophy. Using philological and cultural clues, as well as Ibrahim Efendi's own words, we can attempt deductions about why, how and for what purposes Ibrahim Efendi chose Duret's book for his project. (shrink)