I defend and develop a traditional view in the metaphysics of sound, The Wave Theory of Sound. According The Wave Theory, as developed herein, sounds are not patterned disturbances so much as their propagation. And the propagation of a patterned disturbance is not a form of travel, but a dynamic in-formation, the wave-form successively inhering in diferently located parts of the dense and elastic medium. This conception, along with the assumption that we hear not only sounds but their sources, has (...) the resources to address many of the most recent criticisms of this traditional view. (shrink)

Recent scholarship in medical humanities has expressed strong concern over the ability of pharmaceuticals companies to medicalize discomfort and subsequently invent diseases. In this article, I explore the clinical debates over the ontology of the sinus headache as a possible counter-case. Extending Foucault’s concept of principles or rarefaction, this paper documents the efforts of clinicians to resist the pharmaceutically-provided understanding of the sinus headache. In so doing, it offers institutions of rarefaction and rarefactive assemblages as useful heuristics for (...) the exploration of disease legitimization discourse. (shrink)

Les nouveautés dont Pascal entretenait Florin Périer en septembre 1647 demeurèrent inconnues des contemporains. Le problème du vide et le mystère de la suspension des liquides demeurèrent toujours irritants. Cependant, dans le courant de l’hiver 1648, Roberval réalise des expériences nouvelles qui vont changer la face des choses. Les savants, que les expériences de Rouen avaient en général ralliés à la cause du vide, vont l’abandonner, tandis que l’hypothèse de la colonne d’air, contre laquel...

Les nouveautés dont Pascal entretenait Florin Périer en septembre 1647 demeurèrent inconnues des contemporains. Le problème du vide et le mystère de la suspension des liquides demeurèrent toujours irritants. Cependant, dans le courant de l’hiver 1648, Roberval réalise des expériences nouvelles qui vont changer la face des choses. Les savants, que les expériences de Rouen avaient en général ralliés à la cause du vide, vont l’abandonner, tandis que l’hypothèse de la colonne d’air, contre laquel...

This article documents the general tendency of seventeenth-century natural philosophers, irrespective of whether they were atomists or anti-atomists, to regard space, time and matter as magnitudes having the same internal composition. It examines the way in which authors such as Fromondus, Basson, Sennert, Arriaga, Galileo, Magnen, Descartes, Gassendi, Charleton as well as the young Newton motivated their belief in the isomorphism of space, time and matter, and how this belief reflected on their views concerning the relation between geometry and physics. (...) Special attention is paid to the fact that most of the authors mentioned above regarded rarefaction and condensation, on the one hand, and acceleration and deceleration, on the other hand, as analogous phenomena, which consequently had to be explained in similar terms. (shrink)

La découverte de la raréfaction spontanée de l’air convertit Roberval, au printemps 1648, à l’hypothèse de Torricelli. Nous avons vu comment elle lui inspira l’expérience cruciale du vide dans le vide, imaginée par Torricelli lui-même dans sa seconde lettre à Ricci : c’est la divulgation de cette expérience qui allait assurer, dans le courant de juin, la victoire définitive de la pression barométrique. Il convient de rechercher qui la réalisa le premier et d’examiner le crédit que l’on doit a...

La découverte de la raréfaction spontanée de l’air convertit Roberval, au printemps 1648, à l’hypothèse de Torricelli. Nous avons vu comment elle lui inspira l’expérience cruciale du vide dans le vide, imaginée par Torricelli lui-même dans sa seconde lettre à Ricci : c’est la divulgation de cette expérience qui allait assurer, dans le courant de juin, la victoire définitive de la pression barométrique. Il convient de rechercher qui la réalisa le premier et d’examiner le crédit que l’on doit a...

ABSTRACTThe paper examines the relevance of the nomological view of nature to three discussions of tide in the thirteenth century. A nomological conception of nature assumes that the basic explanatory units of natural phenomena are universally binding rules stated in quantitative terms. Robert Grosseteste introduced an account of the tide based on the mechanism of rarefaction and condensation, stimulated by the Moon's rays and their angle of incidence. He considered the Moon's action over the sea an example of the (...) general efficient causality exerted through the universal activity of light or species. Albert the Great posited a plurality of causes which cannot be reduced to a single cause. The connaturality of the Moon and the water is the only principle of explanation which he considered universal. Connaturality, however, renders neither formulation nor quantification possible. While Albert stressed the variety of causes of the tide, Roger Bacon emphasized regularity and reduced the various causes producing tides into forces. He replaced the terminology of ‘natures’ by one of ‘forces’. Force, which in principle can be accurately described and measured, thus becomes a commensurable aspect of a diverse cosmos. When they reasoned why waters return to their place after the tide, Grosseteste argued that waters return in order to prevent a vacuum, Albert claimed that waters ‘follow their own nature’, while Bacon held that the ‘proper force’ of the water prevails over the distant force of the first heaven. I exhibit, for the thirteenth century, moments of the move away from the Aristotelian concerns. The basic elements of these concerns were essences and natures which reflect specific phenomena and did not allow for an image of nature as a unified system. In the new perspective of the thirteenth century the key was a causal link between the position of the Moon and the tide cycle, a link which is universal and still qualitative, yet expressed as susceptible to quantification. (shrink)

What causes winds was regarded as one of the most difficult questions of early modern natural philosophy. Vitruvius, the ancient Roman architectural author, put forth an alternative to Aristotle’s theory by likening the generation of wind to the actions of the aeolipile, which he believed made artificial winds. As Vitruvius’s work proliferated during the sixteenth and seventeenth centuries, numerous natural philosophers, including Descartes, used the aeolipile as a model for nature. Yet, interpretations of Vitruvius’s text and of the relation of (...) the aeolipile to natural winds varied according to definitions and conceptions of air, wind, rarefaction, condensation, and vapor. (shrink)

En este artículo se pretende problematizar la noción de injusticia testimonial, mediante una reconstrucción históricofilosófica de algunos usos contemporáneos del testimonio. La literatura sobre el testimonio en el siglo XX no siempre considera la discusión filosófica acerca del significado epistémico del testimonio, pese a que ambos asuntos podrían articularse mejor si el testimonio se comprende desde sus usos históricos recientes, y si la interpretación de los testimonios históricos se sostiene en una concepción adecuada del dispositivo discursivo de la testificación. Se (...) realizó un análisis filosófico del discurso testimonial y una revisión histórica de sus usos en dos contextos testimoniales: los testimonios del Holocausto y la literatura del testimonio latinoamericana. Como resultado de esta reconstrucción históricofilosófica sugerimos ampliar la noción de injusticia testimonial para que, además del desconocimiento o rechazo de la palabra ajena, incorpore el enrarecimiento de la testificación que cabe reconocer en cierto paradigma contemporáneo expresivista de la memoria testimonial.AbstractIn this article we try to problematize the notion of testimonial injustice, through a historical-philosophical reconstruction of some contemporary uses of testimony. The literature on testimony in the twentieth century does not always consider the philosophical discussion of the epistemic meaning of testimony, although both issues could be articulated better if testimony is understood from its recent historical uses, and the interpretation of historic testimony is held on an adequate conception of the discursive device of witnessing. We conducted a philosophical analysis of testimonial discourse and a historical review of its use in two testimonial contexts: Holocaust Testimonies and Latin American literature of testimony. As a result of this historical-philosophical reconstruction, we suggest to expand the notion of testimonial injustice so that, apart from disregard or rejection of the word of others, it incorporates the rarefaction of witnessing, which can be recognized in a certain expressivist contemporary paradigm of testimonial memory. (shrink)

The Anthropocene crisis is frequently described as the rarefaction of resources or resources per capita. However, both energy and minerals correspond to fundamentally conserved quantities from the perspective of physics. A specific concept is required to understand the rarefaction of available resources. This concept, entropy, pertains to energy and matter configurations and not just to their sheer amount. However, the physics concept of entropy is insufficient to understand biological and social organizations. Biological phenomena display both historicity and systemic (...) properties. A biological organization, the ability of a specific living being to last over time, results from history, expresses itself by systemic properties, and may require generating novelties The concept of anti-entropy stems from the combination of these features. We propose that Anthropocene changes disrupt biological organizations by randomizing them, that is, decreasing anti-entropy. Moreover, second-order disruptions correspond to the decline of the ability to produce functional novelties, that is, to produce anti-entropy. (shrink)

The principal objective of this study is to present and discuss the elements that emerge from Michel Foucault's archeological undertakings, which, in our view, configure the existence of a new rhetoric that deals with what the French philosopher called the rarefaction of the subject and rarefaction of discourse in his inaugural lecture at the Collège de France (Foucault, 1996). This new rhetoric would be in charge of reflecting and analyzing the phenomena that result from both the rarefaction (...) of the subject and the rarefaction of discourse, that is, such rhetoric invests in what is responsible for imposing on the speaking subject what to say and how to say it. Therefore, it turns to certain mechanisms of control of discourses that Foucault presented in The Discourse on Language, a work that completes five decades of its publication. This Foucauldian rhetoric also has as its main function to deal with the history of the present, that is, to reflect on what we do and think at this exact moment, which, in turn, would be in charge of contributing to the history of how we became subjects in a culture like ours, at this stage of high modernity and the Information Age. From this perspective, she would be interested in the processes of identification and subjectivation that result from the ways in which we become subjects. In short, it is a study that seeks to present elements that demonstrate the emergence of a new rhetoric that emerges from the work of Michel Foucault, who, according to Deleuze (1992), increasingly invested in a generalized pragmatics. (shrink)

The Beginnings of Nietzsche's Theory of Language is concerned with the years 1865 through Winter/Spring 1870-71. Four texts of Nietzsche's, "Vom Ursprung der Sprache", "Zur Teleologie", "Zu Schopenhauer", and "Anschauung Notes", are translated into English and interpreted from the perspective of Nietzsche's developing theory of language. An examination of the major influences of Schopenhauer, Kant, Eduard von Hartmann, and Frederick A. Lange are pursued. ;Theory, in this work, does not assume that it is possible to take a position of authority (...) or truth in the interpretation of texts, rather that interpretation of texts constitutes an attempt to uncover a discursive practice, to describe a discourse-object. The method used is Nietzsche's method of genealogy, which follows the formation of discourse, at once scattered, discontinuous, and regular and analyzes the process of rarefaction, consolidation and unification in that discourse. Genealogy is exegesis in Nietzsche's sense of it as rumination, as the slow, repetitive, gray activity of deciphering what is documented. Major genealogical nodes or elements of Nietzsche's beginning theory of language are used and reused in different contexts throughout the work, resulting in a cumulative effect which explores specific elements in Nietzsche's thinking about language. ;This work offers five major contributions to Nietzsche studies: a detailed introduction of the significant influence of Eduard von Hartmann upon Nietzsche's thinking; a comprehensive look at the influence of Lange's History of Materialism upon Nietzsche's beginning theory of language; a thorough analysis of "Zur Teleologie" and "Zu Schopenhauer" in the overall contexts of Nietzsche's thinking with regard to metaphysics and teleology; the gathering together and interpretation into a world view of the "Anschauung Notes"; and a close examination of Nietzsche's breaking away from Schopenhauer as it takes place before the publication of The Birth of Tragedy. ;Nietzsche's primary contributions to a theory of language in these beginning years are three: the adoption of the role of the unconscious instincts in the origins and ongoing production of language; the assertion that unconscious thought processes are a precondition for conscious thought; an examination of the relationships of language to epistemology, which results in the recognition of the limits of language as an instrument of truth, but a realization of the inestimable value and force of its symbolic and figurative aspects, aspects necessitated by the very nature of language itself. (shrink)

I.Carl Schmitt's The Concept of the Political (1927; revised 1932 and 1933) has come to be widely recognized as a work of rare insight into the formative logic of the state. Much less apparent is that implicit within this theoretical distillation is a new type of political history. There is every indication—given the philosophical, theological, and aesthetic aspects of Schmitt's writings, no less than his overtly personal beliefs in this regard—that a history of the political relative to the modern state, (...) which is the focus of his historical interest, would entail more than the mere rarefaction of traditional, pragmatic…. (shrink)

Cet article aborde l’écriture à partir de la configuration actuelle de l’espace urbain, avec ses ensembles résidentiels sécurisés qui redistribuent et donnent sens à l’espace des villes, en provoquant une raréfaction des pratiques de sociabilité. Partant du principe qu’il est impossible de penser le fonctionnement du langage en le séparant de ses conditions matérielles et de la conjoncture dans laquelle celles-ci surgissent, il analyse le lien entre l’écriture urbaine et la façon dont cet espace de signification s’organise matériellement. L’analyse se (...) fonde sur la pratique des tags à Campinas, au Brésil. L’article aborde également le rapport de la population à l’école en tant que lieu d’institutionnalisation de l’écriture. (shrink)

El corpuscularismo sirvió a los físicos del XVII para matematizar la naturaleza al considerarla un conjunto de sistemas mecánicos. Pero la discontinuidad del atomismo chocaba con la continuidad de las magnitudes básicas, espacio y el tiempo, y derivadas. En su madurez, Galileo fundió física y matemáticas propo-niendo componer tanto los cuerpos como las magnitudes continuas a base de átomos inextensos (indivisibles). En el proceso inició el análisis de las propiedades de los conjuntos infinitos, pero no logró elaborar un cálculo que (...) le permitiese computar diferentes movimientos acelerados, mientras que en física no resolvió en problema fundamental de la condensación y la rarefacción.Seventeenth century atomism envisioned Nature as a set of mechanical systems to be treated mathematically. But the basic discontinuity of atomic theory of matter appeared inconsistent with the essential continuous character of geometrical magnitudes. In his old age Galileo devised a way to unify mathematics and physics via composing matter and continuous magnitudes out of an infinity of indivisible (atomic) units. Even though he forwarded the analysis of infinite sets, he couldn’t establish a calculus to compute and compare different accelerated motions. In physics he never solved the basic problem of condensation and rarefaction of substances. But the side results were interesting and even fascinating. (shrink)

Un vent de collapsologie souffle aujourd'hui sur l'écologie politique. Le réchauffement climatique, la raréfaction des ressources fossiles, l'érosion de la biodiversité, la prolifération nucléaire se poursuivent, année après année, décennie après décennie. L'effondrement n'est-il pas la fin logique de cette fuite en avant? Depuis les premières alertes des années 1970 jusqu'aux débats contemporains sur l'Anthropocène, Luc Semal retrace l'émergence et l'évolution des mobilisations aux prises avec les limites à la croissance et la perspective d'un effondrement global. Leur catastrophisme est envisagé (...) non pas comme une fascination paralysante pour le désastre, mais comme une pensée politique propice à la délibération et à l'action. Des mouvements comme ceux de la décroissance et des Transition Towns réinventent des projets écologistes entre sobriété heureuse et désastres annoncés. Par leurs luttes et leurs expérimentations locales, ces mobilisations à l'ombre des catastrophes esquissent les contours d'une démocratie post-pétrole et post-croissance. (shrink)

El corpuscularismo sirvió a los físicos del XVII para matematizar la naturaleza al considerarla un conjunto de sistemas mecánicos. Pero la discontinuidad del atomismo chocaba con la continuidad de las magnitudes básicas, espacio y el tiempo, y derivadas. En su madurez, Galileo fundió física y matemáticas propo-niendo componer tanto los cuerpos como las magnitudes continuas a base de átomos inextensos (indivisibles). En el proceso inició el análisis de las propiedades de los conjuntos infinitos, pero no logró elaborar un cálculo que (...) le permitiese computar diferentes movimientos acelerados, mientras que en física no resolvió en problema fundamental de la condensación y la rarefacción.Seventeenth century atomism envisioned Nature as a set of mechanical systems to be treated mathematically. But the basic discontinuity of atomic theory of matter appeared inconsistent with the essential continuous character of geometrical magnitudes. In his old age Galileo devised a way to unify mathematics and physics via composing matter and continuous magnitudes out of an infinity of indivisible (atomic) units. Even though he forwarded the analysis of infinite sets, he couldn’t establish a calculus to compute and compare different accelerated motions. In physics he never solved the basic problem of condensation and rarefaction of substances. But the side results were interesting and even fascinating. (shrink)

The theory of numbers, the theory of computation and well-known biological and neurological studies on cognition and consciousness all indicate the concept of recursion as their common denominator. Mathematical recursion owes its meaning and properties to a dual relationship between its results, which always constitute a sequence, and the operator that generated them, which is instead invariant. This article proposes that this duality in recursion originates from the duality between the biological homeostatic equilibrium in living systems and the adaptive physico-chemical (...) changes required to sustain such equilibria. Such duality gives order and meaning to the experiences of a living system. One of the many implications of this innovative perspective is that this duality can decouple computational results from our intuitive order relations, and that this can cause a rarefaction of the capacity of digital systems to convey communication and favour adaptation to the environment. (shrink)

: Although Galileo's struggle to mathematize the study of nature is well known and oft discussed, less discussed is the form this struggle takes in relation to Galileo's first new science, the science of the second day of the Discorsi. This essay argues that Galileo's first science ought to be understood as the science of matter—not, as it is usually understood, the science of the strength of materials. This understanding sheds light on the convoluted structure of the Discorsi's first day. (...) It suggests that the day's meandering discussions of the continuum, infinity, the vacuum, and condensation and rarefaction establish that a formal treatment of the "eternal and necessary" properties of matter is possible; i.e., that matter as such can be considered mathematically. This would have been a necessary, and indeed revolutionary, preliminary to the mathematical science of the second day because matter itself was thought in the Aristotelian tradition to be responsible for the departure of natural bodies from the unchanging and thus mathematizable character of abstract objects. In addition, the first day establishes that when considered physically, these properties account for matter's force of cohesion and resistance to fracture. This essay closes by showing that this dual style of reasoning accords with the conceptual structure of mixed mathematics. (shrink)

In the doxographical tradition the concept of a ‘crystalline’ outer-heaven is ascribed to two Presocratic thinkers. Aëtius tells us that Anaximenes held that the stars were fastened like nails in the ‘crystalline’: and, again, that Empedocles believed that the fixed stars were attached to the ‘crystalline’, while the planets were unattached: The ascription of this concept to both these Presocratic philosophers is decidedly odd; for, whereas, in the case of Empedocles’ thought, fire acts as a solidifying agent, Anaximenes, on the (...) other hand, connected solidity with cold and rarity with heat and in his cosmology the heavenly bodies are created by the rarefaction into fire of vapour from the earth. For this reason the concept of a solid outer-heaven is quite incompatible with the little else that is known of his cosmogony and cosmology. (shrink)

In the doxographical tradition the concept of a ‘crystalline’ outer-heaven is ascribed to two Presocratic thinkers. Aëtius tells us that Anaximenes held that the stars were fastened like nails in the ‘crystalline’: and, again, that Empedocles believed that the fixed stars were attached to the ‘crystalline’, while the planets were unattached: The ascription of this concept to both these Presocratic philosophers is decidedly odd; for, whereas, in the case of Empedocles’ thought, fire acts as a solidifying agent, Anaximenes, on the (...) other hand, connected solidity with cold and rarity with heat and in his cosmology the heavenly bodies are created by the rarefaction into fire of vapour from the earth. For this reason the concept of a solid outer-heaven is quite incompatible with the little else that is known of his cosmogony and cosmology. (shrink)

An analytical investigation into compressible gas flow with slight rarefactions through the insect trachea and tracheoles during the closed spiracle phase is undertaken, and a complete set of asymptotic analytical solutions is presented. We first obtain estimates of the Reynolds and Mach numbers at the channel terminal ends where the tracheoles directly deliver respiratory gases to the cells, by comparing the magnitude of the different forces in the compressible gas flow. The 2D Navier–Stokes equations with a slip boundary condition are (...) used to investigate compressibility and rarefied effects in the trachea and tracheoles. Expressions for the velocity components, pressure gradients and net flow inside the trachea are then presented. Numerical simulations of the tracheal compressible flow are performed to validate the analytical results from this study. This work extends previous work of Arkilic et al. :167–178, 1997) on compressible flows through a microchannel. Novel devices for microfluidic compressible flow transport may be invented from results obtained in this study. (shrink)

On the question of the intensio/remissio formarum, Giles, while sharing Thomas Aquinas’s view’s main tenets, develops a very different theory - in fact, a theory that is unique, and deeply “aegidian”: the increase or decrease does not take place in the essence of a qualitative form, but only in its esse, in function of the disposition of the subject that receives this form. Giles’s position, however, may be threatened by a risk of infinite regress in the conditions that explain the (...) receptivity of a subject. He successfully addresses this issue, and, within the framework of Aristotelian physics, offers a very original response: qualitative changes in bodies are ultimately based, via condensation and rarefaction, on the spatial positions of their material parts. (shrink)

In a scholion on Arist. Cael. IV 2.309b29 found in Codex Laurentianus 87.20, the scholiast ascribes to Thales a theory of generation by condensation and rarefaction. This ascription proves to be a construct whose first traces can be found in authors of the early imperial period.

The Anthropocene crisis is frequently described as the rarefaction of resources or resources per capita. However, both energy and minerals correspond to fundamentally conserved quantities from the perspective of physics. A specific concept is required to understand the rarefaction of available resources. This concept, entropy, pertains to energy and matter configurations and not just to their sheer amount. However, the physics concept of entropy is insufficient to understand biological and social organizations. Biological phenomena display both historicity and systemic (...) properties. A biological organization, the ability of a specific living being to last over time, results from history, expresses itself by systemic properties, and may require generating novelties The concept of anti-entropy stems from the combination of these features. We propose that Anthropocene changes disrupt biological organizations by randomizing them, that is, decreasing anti-entropy. Moreover, second-order disruptions correspond to the decline of the ability to produce functional novelties, that is, to produce anti-entropy. (shrink)

This essay examines the technical evolution and scientific context of William Crookes's effort to achieve an absolute vacuum in the 1870s. Prior to late 1876, along with interrogation of the radiometer effect, the quest for perfect vacuum was a major motive of his research programme. At this time, no absolutely dependable method existed to determine exactly the pressures at extreme rarefactions. Crookes therefore employed changes in radiometric, viscous and electrical effects with changing pressure in order to monitor the progress of (...) exhaustion. After late 1876, his research priorities shifted because he had reached a plateau of technical accomplishment in the effort to attain extreme vacua, and because observed effects in vacua—particularly electrical—assumed an importance in their own right, and as bases for elucidation and defence of his concept of a ‘fourth state of matter’ at very low pressures. (shrink)

Foucault considérait l'auteur comme un principe de raréfaction des discours empêchant le livre de mener sa propre existence. Mais, à propos de son oeuvre et à partir d'une certaine époque, il adopte la posture de l'auteur. Pourquoi, donc, l'apologie de la dispersion textuelle s'efface-t-elle au profit de la maîtrise unificatrice du discours? Répondre à cette question oblige à approfondir certaines notions maîtresses de la pensée de Foucault, en particulier le sujet, la vérité et le pouvoir, ainsi que leur articulation.

This article documents a project that deals with the application of a generative approach for creating audio-visual narration. The project investigates the possibility of producing spatio-temporal montage, offering a kaleidoscopic view of pre-recorded events. Fragmented narratives synthesize a complex whole, which evolve in space and time according to the viewer's behaviour in space. Thus, the viewer becomes the player of a live, constantly changing puzzle. The aim is to create new experiences derived from the synthesis is being pre-recorded memories, according (...) to kinetic commands. A kaleidoscopic narrative is being created according to users' placement, to their movement in space, and to interaction between them. The system's narratives are different if a single observer is interacting with it via his displacement, or if many observers are moving independently towards different directions or as a group. Two kinds of interaction are being developed: humanmachine interaction and humanhuman interaction. Condensings and rarefactions are perceived by the system as different stimuli, and thus they lead to different audio-visual narratives. The environment created by the system is planned to be both procedural and participatory. It is led by rules and by people at the same time. It reacts to the users' acts and is offered for multiple simultaneous personal readings. When interactive environments are offered for simultaneous readings by a number of users, they are altered in a way that depasses the sum of individual interactions, creating an emergent narrative and a collective memory. Video as a means of projecting recorded memories is being edited by the system in order to provoke new experiences and connotations, through semantic montage. (shrink)

We show that the velocity distribution in rarefied (i.e., Knudsen) gases is spontaneously weighted in favor of small speeds away from the Maxwellian distribution corresponding to the temperature of the container walls—despite thermodynamic equilibrium with the walls. The consequent paradox concerning the second law of thermodynamics is discussed.