The particle internal clock conjectured by de Broglie in 1924 was investigated in a channeling experiment using a beam of ∼80 MeV electrons aligned along the 〈110〉 direction of a 1 μm thick silicon crystal. Some of the electrons undergo a rosette motion, in which they interact with a single atomic row. When the electron energy is finely varied, the rate of electron transmission at 0° shows a 8% dip within 0.5% of the resonance energy, 80.874 MeV, for which the (...) frequency of atomic collisions matches the electron’s internal clock frequency. A model is presented to show the compatibility of our data with the de Broglie hypothesis. (shrink)
Robert Sauzet présente à partir d'un document inédit le livre de raison d'un notaire nîmois du siècle de Louis XIV, Étienne Borrelly la vie quotidienne d'une partie des Français. Ce manuscrit assure la richesse de l'ouvrage. En effet, le texte rédigé par Étienne Borrelly tout au long de sa vie devient vite, de simple livre de famille, un recueil traitant indifféremment de politique nationale ou internationale, d'événements locaux aussi divers que les intempéries météorologiques et ..
Si la discussion présente — comme la poésie — quelque au-delà d'ordre ontologique, il nous ferait plaisir de reprendre les points posés par M. Brault dans son post-scriptum à un récent article* …D'abord il était question d'éviter les « à peu près» quant aux bases de discussion valable sur toute poésie; or, le but de notre exposé ne visait certes pas à polir une définition originale; il allait de soi que nous faisions nôtres les acceptions généralement admises, à commencer par (...) celles de M. Brault. La poésie est rythme, chant, véhicule d'images — et de pensées — susceptibles d'émouvoir; témoignage de notre soif de certitude, prière … II n'en est pas moins vrai que, pendant des siècles, le concept a maintenu gaillardement ses droits dans l'expression poétique à côté du frisson causé par des impondérables et sans toujours, immanquablement, lui nuire. La poésie de Racine est tout de meme conceptuelle; et celle de Vigny — et celle de Chateaubriand si, comme on nous le fait justement remarquer, la poésie dépasse le cadre d'une prosodie plus ou moins traditionnelle. (shrink)
I explore some of the ways that assumptions about the nature of substance shape metaphysical debates about the structure of Reality. Assumptions about the priority of substance play a role in an argument for monism, are embedded in certain pluralist metaphysical treatments of laws of nature, and are central to discussions of substantivalism and relationalism. I will then argue that we should reject such assumptions and collapse the categorical distinction between substance and property.
The structure of Chiodi's book is based on Vuillemin's important hermeneutical thesis that existentialism is one more step in the program of the romantics to give an absolute foundation to finite reality through the establishment of necessary relations between subjectivity and being. These relations, once revealed, would dispel the facticity and contingency in which the natural world is enshrouded. The role of Heidegger in this tradition involves one further dialectical twist, since Heidegger centers all Western Philosophy, including his own, around (...) the problem of ground in the manner proposed by the romantics. The suggested dialectical twist is then Heidegger's Kehre, a step beyond the radical contingency of Dasein in Sein und Zeit. Indeed, this contingency, once reached, shows unequivocally the failure of the romantic program. The ground cannot be ontologically connected with any object nor with the subject; it is rather the necessary history of the ground that determines all categorial differentiations in the world, including the reflective differentiation of subject-objects. Thus it becomes important to distinguish Heidegger from Hegel since, in both, history and necessity are characteristics of the ground. Chiodi gets to the bottom of this matter by pointing to the transfer of negativity from the process of history to the end of history. For Heidegger what is necessary is the repeated withdrawal of the ground so that it may never be confused with that which is known in any revelation or through all of them. This move, though clear, would still leave a fundamental ambiguity in the later philosophy of Heidegger: language, which acts as messenger from the ground to the world, must reflect the superabundance of Being from the standpoint of the ground while it only reflects possibilities of being from the standpoint of the world. This is an ambiguity that Heidegger would want to maintain. Chiodi's interpretation of Heidegger as a neo-platonist totally destroys this ambiguity and with it the very delicate balance created by Heidegger between infinite meaning and the ability of finite words to dwell upon it.--A. de L. M. (shrink)
G. Deledalle is the author of a Histoire de la philosophie américaine, and of some excellent studies on Dewey, such as La pédagogie de Dewey, philosophie de la continuité, and "Durkheim et Dewey". These are all works that deserve full attention by students of the Golden Age of American philosophy. For a European, Deledalle has an unusual capacity to detect the vitality and freshness, but also the depth, of the growth of higher education in the U.S. in the first half (...) of this century. At the heart of this growth were philosophical ideas, and in particular those of Dewey. Philosophy did not have then dictatorial or competitive designs regarding education, the social and political sciences, psychology, or the natural sciences. It freely mingled with them, not just imparting methodological or epistemological rigor but also contributing some insights and giving the hypotheses and conclusions in these fields the character of "experiences." Experience is the guiding theme of this rich and complicated work, covering a multitude of subjects and positions. The treatment is divided into six parts dealing respectively with Dewey's leanings toward unitary experience, organic experience, dynamic experience, functional experience, instrumental experience, and transactional experience. In the study of the intellectual of Dewey's life practically all of his production is critically examined by Deledalle: a monumental task in itself, made possible by the critical bibliography of Milton Hasley Thomas. There is enough early biographical detail to make this work an effective and affectionate intellectual portrait. The best pages of this work are devoted to a thorough explication and comparative study of Dewey's final synthesis of experience. There are very helpful comparative references to Marx, Freud, Bergson, and Heidegger, and also indispensable parallels and contrasts with Peirce, James, and Whitehead. This is not a modest contribution from a regional point of view: Deledalle is, perhaps more than anybody else, aware of an ongoing international dialogue on Dewey, a dialogue that is preserving experience as a problem-complex at the front line of contemporary reflection.--A. de L. M. (shrink)
If I lead a life of virtue, that may well be good for you. But will it also be good for me? The idea that it will—or even must—is an ancient one, and its appeal runs deep. For if this idea is correct then we can provide everyone with a good reason—arguably the best reason—for being virtuous. However, for all the effort which has been invested in defending the idea, by some of the best minds in the history of philosophy, (...) it remains unproven. Worse, in this skeptical age hardly anyone really believes it. I don't really believe it either, at least not in its strongest forms, but I think that the question is nonetheless worth examining. Even if we cannot show that virtue and self-interest coincide, we can at least measure the breadth of the gap between them. (shrink)
Kasm does not offer any concept of proof which is regulative for all metaphysics, for he is convinced that each metaphysical approach requires its own proper logic and methodology. Within this pluralistic framework he seeks to discern the structure of formal truth as expressed in the concept of proof inherent in various metaphysical approaches.--L. S. F.
RésuméLa notion de «rationalité de l'Univers » a varié au cours du temps, le long dialogue de l'esprit et de la nature ayant toujours abouti à ce que Le Roy appelait « l'évolution de l'évidence et la plasticité de la raison ».L'échec de l'explication mécanique de l'Univers a conduit James Jeans à déclarer que le monde ressemble plutôt « à une grande pensée » qu'à une grande machine », car on ne peut en donner qu'une description mathématique. En réalité, la (...) physique moderne n'est ni plus ni moins mathématique que l'ancienne; elle est seulement plus générale. James Jeans confond les mathématiques pures et les mathématiques appliquées.Eddington prétend déduire les lois générales et les constantes physiques de la nature de considérations épistémologiques a priori. C'est un retour à Kant. Malheureusement les postulate dont il part comme évidents n'ont point paru tels au XVIIe siècle et n'ont été admis que sous la contrainte de l'expérience. Sa théorie ne prévoit ni les neutrons ni les mésons. Elle est vouée à l'échec.La possibilité de trouver un formalisme mathématique applicable à un domaine expérimental ne préjuge en rien la rationalité de l'Univers, car un mathématicien habile sera toujours capable de faire rentrer même un monde « erratique » dans un vêtement mathématique approprié. (shrink)
