In the histories of science, technology and aviation Christiaan Huygens has been unjustly neglected. Documents in the corpus of his works show a life-long interest in the problem of human flight together with some considerable anticipations of, and contributions to, its solution. He was among the first, if not the first, in perceiving the potential of the heavier-than-air approach. He clearly recognized the need for a powerful, mechanical motive source. He stated the first laws of aerodynamics and conceived the modern (...) propeller for propulsion. He was the first to conceive of the aeroplane. His approach to the problem of flying was both global and scientific. (shrink)

Contrary to what has been asserted or implied by Mach and more recent writers, the law of illumination and the study of photometry were not ignored in the years between Kepler's first enunciation of the former in 1609 and Bouguer's Essai on the latter in 1729. The law of illumination was in fact denied in 1613 by Aguilonius. It was probably rediscovered independently and certainly reformulated in more modern terms by Mersenne and Castelli in 1634, and by Boulliau in 1638. (...) It was again formulated and this time demonstrated empirically by Montanari no later than 1676, and possibly as early as 1634 by Castelli. Although neither the law nor photometry were major concerns before Bouguer, they were not completely neglected either. (shrink)

(1981). Benedetto Castelli's Discourse on the loadstone (1639–1640): the origin of the notion of elementary magnets similarly aligned. Annals of Science: Vol. 38, No. 2, pp. 125-140.

Was the above-named bill, which was brought forward in 122 b.c. by the tribune M. Liuius Drusus, and provided that the Latins should under all circumstances be exempt from the penalty of scourging, duly passed by the Roman Assembly and entered upon the statute-book?

If T has only countably many complete types, yet has a type of infinite multiplicity then there is a c.c.c. forcing notion Q such that, in any Q-generic extension of the universe, there are non-isomorphic models M 1 and M 2 of T that can be forced isomorphic by a c.c.c. forcing. We give examples showing that the hypothesis on the number of complete types is necessary and what happens if `c.c.c.' is replaced by other cardinal-preserving adjectives. We also give (...) an example showing that membership in a pseudo-elementary class can be altered by very simple cardinal-preserving forcings. (shrink)

David Hume was a highly original thinker. Nevertheless, he was a writer of his time and place in the history of philosophy. In this book, M. A. Stewart puts Hume’s writing in context, particularly that of his native Scotland, but also that of British and European philosophy more generally. Through meticulous research Stewart brings to life the circumstances by means of which we can get a deeper understanding of Hume’s writings on the nature and reach of human reason, the foundation (...) of morals, and, especially, on the philosophy of religion. Stewart pays particular attention to Hume’s intellectual development, beginning with his education at the College of Edinburgh, the writing of his Treatise of Human Nature, and his subsequent philosophical responses to criticisms of that book. He argues that Hume’s scepticism set him at odds with the Christian Stoicism of Scottish contemporaries including that of Francis Hutcheson - and shows that this conflict played a major role in his failure to obtain the Edinburgh Moral Philosophy Chair in 1745. Stewart’s detailed study of the physical character of Hume’s surviving manuscripts in Chapters 8 and 9 provides the best available dating of his early ‘Essay on Modern Chivalry’, his ‘Early Fragment on Evil’ and the periods of composition of his Dialogues Concerning Natural Religion. Other chapters compare Hume’s theory of abstraction with that of Locke and Berkeley, provide the 17th and 18th century philosophical context of the central argument of his essay ‘Of miracles’, and consider the 18th and 19th century reception of his writings in England and Ireland. (shrink)

Bilim felsefesinin en temel problemlerinden biri olan sınırlandırma problemi belirli bir ölçüt vasıtası ile bilimi, bilimsel olmayan ya da sahte/sözde bilim olan etkinliklerden ayırt edip edemeyeceğimizi konu edinmektedir. Literatüre baktığımızda felsefeciler –özellikle bilim felsefecileri– bilimin doğasını karakterize etme girişiminde bulunurken bilim dilinin mantıksal yapısına ya da bilimin tarihsel süreçlerine odaklanarak, bilimi bilimsel olmayan ya da sahte-bilim olan etkinliklerden ayırt etmişlerdir. Bu çalışma ise farklı bir yaklaşım benimseyerek sınırlandırma problemine, felsefecilerin değil, bilim insanlarının perspektifi ile bakmayı amaçlamaktadır. Bu sebeple alanında deneyimli (...) ve çeşitli bilim dallarında profesör olan otuz bilim insanı ile niteliksel araştırma yöntemlerinden biri olan yapılandırılmış görüşme tekniği uygulanmıştır. Bu görüşmeler aracılığıyla bilim insanlarının sınırlandırma problemi hususunda öne sürdükleri görüşler açığa çıkartılıp değerlendirilmiştir. Değerlendirme neticesinde üç temel bulguya ulaşılmıştır. İlki, sınırlandırma problemine ilişkin sorularımıza bilim insanları tarafından getirilen yanıtların birçoğu temel felsefi yaklaşımlarla uyuşmaktadır. Elde ettiğimiz verileri farklı temalar altında analiz ettiğimiz bu çalışmada, sınırlandırma problemine dair yaygın felsefi görüşlerin, bilim insanlarının görüşleri ile anlamlı benzerlikler taşıdığı kısımlar vurgulanmıştır. İkincisi, sınırlandırma problemi ve bu problemlerle ilişkili diğer meseleler üzerinde felsefi olarak sağlanamayan uzlaşma, bilim insanları arasında da mevcuttur. Ne var ki bu ihtilaf dengeli bir biçimdedir, öyle ki benzer yanıtlara sahip olan bilim insanları baskın bir grup sayısına ulaşmamıştır. Üçüncü ve son olarak, bilim insanlarının bilim felsefesinin temel problemlerine yüksek oranda yabancı olduğu görülmektedir. Bu bulgu, her ne kadar nicel olmayan bir yolla ölçülmüşse de verilerin dikkatli analizi durumun bu yönde olduğunu göstermektedir. Tüm bu temel bulgular ışığında, genel değerlendirmemiz, farklı türden yapılandırılmış görüşmelerin çok daha detaylı sonuçlar temin edebileceğidir. (shrink)

The philosophy of Max Scheler is hardly of the type that can stand compendious presentation. Obsessed by such clear distinctions as the analytic vs. the synthetic, mind vs. matter, and metaphysics vs. science, Scheler proposed still further ontological distinctions which often presented more problems than the distinctions they were designed to replace. Moreover, having renounced any diagnostic use of scientific materials, Scheler had to resort to tedious descriptions that would allow him to bridge the gap between common sense and rational (...) consistency. When the presentation of his doctrine is simply outlined, as it is in this book, the play with alternative ontological distinctions becomes conspicuously irrelevant. The rich insight so frequently hiding in descriptive detail and suggesting a myriad of fertile directions, cannot be reduced to the outline's topic headings. One wonders if any critical examination of Scheler in these terms can be fair, or even if it is worthwhile to know only that much about Scheler.--A. M. (shrink)

Originally prepared as a doctoral thesis which was presented in 1940, the present work ranges over the major figures in British idealism, and in the Angloamerican schools of neorealism and logical atomism. What is understood here as the problem of relations is, of course, the controversy regarding the internality or externality of relations. This controversy begins with some issues involved in the definition and classification of relations, issues which affect the definition and classification of other categories such as individual, quality, (...) and even quantity. Soon enough, however, this set of issues is augmented by the problems involved in the definition of the relations emerging with each different kind of knowing, and by the problems concerning the bearing that knowledge has on the reality of relations. The main body of Datta's work is the succinct exposition of the doctrine of relations in a great number of authors such as Lotze, Green, Bradley, Bosanquet, James, Perry, Moore, Alexander, Russell, Broad, Cook Wilson, all of which complement each other in an exhaustive analysis of the above issues. Of great interest is the exposition of the Indian doctrine of the categories, including relation, in the Nyaya-Vaisesika system which protested against the Buddhistic conception of reality as an eternal flux. Datta concludes that "relations are always inter-objective, so that whenever cognition is concerned the question of relation does not arise. For cognition is not a relational fact but the ground of all relational facts." In backing these conclusions, the author sketches a brief outline of an ontology in which the main postulate proclaims that the spatiotemporal world is not the whole of reality: reality must include the meaning world as well.--A. M. (shrink)

A rather elementary survey of the tasks of the philosopher in the modern world. American philosophers, the authors claim, by withdrawing from the social and moral concerns of our age, have failed to exert their influence where it is most required, in education.--C. M.

A book which might well become a classic on Heidegger. Richardson discusses most of Heidegger's works in chronological order, offering a close analysis of each. Most chapters include a general exposition of the argument of the work discussed, a detailed analysis of the problems of Thought, Being and Dasein in the work, and a résumé. While maintaining very high standards of scholarly precision in the rendering of Heidegger's ideas and terminology, Richardson yet succeeds in making his book very readable and (...) lucid. Without "supplementing" Heidegger in any way, refraining from explanatory speculations and staying always very close to the text, he manages to clarify some of the most difficult passages of Heidegger's works. His frequent cross-references make the commentary of genuine value to the advanced student as well as to the novice. Heidegger, in his own preface to the book, criticizes Richardson for the sharp distinction between Heidegger I and Heidegger II, but gives a most important substantiation to two of the author's main theories, viz., the difference between Heidegger's Seinsdenken and Husserl's phenomenology, and the central status of the concept of Ereignis in Heidegger's philosophy. Richardson regrettably does not pursue the Heidegger III suggested by Vycinas, the Heidegger of the Geviert, the question of the nature of Being as such. In some chapters at least this omission makes the interpretation seem partial and sometimes inexact. One hopes for a sequel as good and illuminating.—E. M. Z. (shrink)

One of the long-standing problems in particle physics is the covariant description of higher spin states. The standard formalism is based upon totally symmetric Lorentz invariant tensors of rank-K with Dirac spinor components, $\psi _{\mu _1 \cdots \mu _K } $ , which satisfy the Dirac equation for each space time index. In addition, one requires $\partial ^{\mu _1 } \psi _{\mu _1 \cdots \mu _K } = 0{\text{ }}and{\text{ }}\gamma ^{\mu _1 } \psi _{\mu _1 \cdots \mu _K } (...) = 0$ . The solution obtained this way (so called Rarita–Schwinger framework) describes “has–been” spin-(K+ $ - \frac{1}{2}$ ) particles in the rest frame and particles of indefinite (fuzzy) spin elsewhere. Problems occur when $\psi _{\mu _1 \cdots \mu _K } $ constrained this way are placed within an electromagnetic field. In this case, the energy of the spin-(K+ $ - \frac{1}{2}$ ) state becomes imaginary and it propagates acausally (Velo–Zwanziger problem). Here I consider two possible avenues for avoiding the above problems. First I make the case that specifically for baryon excitations there seems to be no urgency so far for a formalism that describes isolated higher-spin states as all the observed nucleon and Δ(1232) excitations (up to Δ(1600)) are exhausted by unconstrained ψ μ , $\psi _\mu ,\psi _{\mu _1 \cdots \mu _3 } {\text{ }}and{\text{ }}\psi _{\mu _1 \cdots \mu _5 } ,$ , structures which originate from rotational and vibrational excitations of an underlying quark–diquark string. Second, I show that the $\gamma ^{\mu _1 } \psi _{\mu _1 \cdots \mu _K } = 0$ constraint is a short-hand of a more general definition of the parity-singlet invariant subspace of the squared Pauli–Lubanski vector, W 2. I consider the simplest case of K=1 and construct the covariant projector onto that very state as $ - \frac{1}{3}(\frac{1}{{m^2 }}W^2 + \frac{3}{4})$ . I suggest to work in the sixteen dimensional vector space, Ψ, of the direct product of the four-vector, A μ , with the Dirac spinor, ψ, i.e., Ψ=A μ ⊗ψ, rather than keeping space-time and spinor indices separated and to consider $( - \frac{1}{3}(\frac{1}{{m^2 }}W^2 + \frac{3}{4}) - 1)\Psi = 0$ as the principal wave equation without invoking any further supplementary conditions. In gauging the equation minimally and, in calculating the determinant, one obtains the energy-momentum dispersion relation. The latter turned out to be well-behaved and free from pathologies, thus avoiding the classical Velo–Zwanziger problem. (shrink)

The body of this book consists of facing English and Latin versions of Scotus' treatise prepared by Father Wolter from study of existing manuscripts. Textual variants are marked in frequent notes, but, perhaps because he doubts that one correct or personally written version ever existed, inconsistencies in the argument or apparent errors in the text are unremarked by the editor. Included as a 30 page appendix is Wolter's translation of Scotus' commentary on Peter Lombard's work, Two Questions from Lectures on (...) Book I of the Sentences. Wolter considers this to be an early version, of which the Treatise is the definitive argument. Scotus' demonstration intends to overcome two classical problems afflicting other proofs of the existence of God: the conclusion that the universe is eternal, and that either God's omnipotence or man's moral freedom is limited by His necessary inclusion in the causal order of the world. These metaphysical difficulties are avoided through Scotus' skilled use of modal logic. The book should be of great interest to students of logic and analytic philosophy on account of the display of technique in the logic of contingency and necessity, as well as to medievalists, for reasons of its substance. Wolter performs a real service in making available this workmanlike edition of a powerful and ingenious original.—M. B. M. (shrink)

Markovic draws upon the Zagreb school of Marx-interpretation, as well as on the data of the historical development of socialism in Yugoslavia in his attempt to develop a critical social theory. He constantly opposes the use of Marxian theory as an ideological orthodoxy simply legitimating political practice. And he points out how Marxian social thought may be a means of critically comprehending social processes, as well as a self-critical theory developing in relation to the historical data at whose evaluation it (...) is directed. Markovic insists that critical social theory must take as its subject matter a range of data comprised of contemporary phenomena, the history of such phenomena, and the human evaluations and aspirations which the historical situation engenders. This points up the importance of a theory of man for a critical social theory. Only an adequate theory of man enables social theory to comprehend and evaluate the goals arising from specific social processes. Markovic outlines elements of such a theory of man, as discoverable in Marx. With these guiding ideas, he examines specific themes such as economics and human values, technology, politics as a professional institution, and revolution. Markovic’s examinations valuably illustrate a balanced Marxian approach to social questions. It is argued, for example, that technological innovations must be analyzed in relation both to the concrete economic processes of given societies, and to the human needs operative in those societies. Markovic draws upon the Yugoslav experience to show the concrete nature of such an analysis. The viability of the professional political institution is discussed, with reference to specific productive relations in societies, and the political possibilities thereof. And in the context of a distinction between political and social revolution, he writes with sensitivity and discernment on the concept of revolution in Marx. Problematically, the precise status of a theory of man in a social theory of the Marxian variety remains unanswered herein. But the work stands as highly useful to those interested in non-ideological developments of Marxian social theory.—M.J.D. (shrink)

Mill's defense of the open society is interpreted as the means toward a closed one. Mill himself is treated as the apostle of cultural solidarity--hostile to Christianity and the clergy which once provided it, and a militant advocate of the Religion of Humanity. The interpretation is defended with some force, but the vehement critique of Mill's position is launched from a fideistic position so radical that its relativism undercuts not only Mill, but Cowling himself. Carelessness of organization and style fit (...) the author's misology only too well.--M. W. (shrink)

Mérleg is an interesting quarterly selection of articles of general interest translated from the major Western languages into Hungarian. It is a Catholic publication for a general intellectual public and it contains besides the longer studies review articles, reviews, interviews and also short summaries. The most important articles of the two issues we are reviewing: A. Greeley, "The Sacred and the Psychedelic"; A. Plé, "The affective life of the consecrated celibate"; K. Franke, "Apology for the protection of the unborn life"; (...) "Basic issues of the Abortion Problem"; "Catechesis according to the Council"; R. Schnackenburg, "The birth of Christ without legends and Myths"; P. Caspers, "The role of the Church in Asia"; C. Aguiar, "Latin-American Catholicism"; "The Memory of Mauriac." The very difficulty of publishing in Hungarian a theologically orientated digest makes this selection dramatically sparing and it seems to give us a more coherent and more essential view of the "happenings" of the West than many of the reviews of America, France or Germany.--M. J. V. (shrink)

It becomes increasingly difficult to keep up with studies of Schelling, or more generally of the history of German Idealism, without being conversant with the rapidly growing Italian literature in this field. This book appears twenty-five years after that of Horst Furrmans, and ten years after that of Walter Schulz—the two major studies to date of Schelling's later philosophy. Although Bausola's study does not display the depth and extent of scholarly penetration to be found in Furrmans or Schulz, neither does (...) it display their pretention. It does not claim to be the ultimate interpretation. Its avowed aim is to treat one major theme in the later Schelling: that of relationship between metaphysics and revelation. Yet it also points to a rather novel interpretation, or at least a sketch, of the relationship of the middle Schelling to the writings preceding the Bruno. For the non-specialist, this book is a valuable introduction, offering a clear and well written account of the great themes of Schelling's late philosophy. Included is a competent review of the relevant secondary sources and a bibliographical notice of publications after 1953, the closing date of Schneeberger's standard Schelling bibliography.—M. J. V. (shrink)

This book is primarily a survey of commonly accepted theories of memory. In the course of the book Locke attempts to show that the traditional theories of memory, that is the Representative and the Realist theories are inadequate because of certain mistaken assumptions adopted by the advocates of these views. For example, both of these theories’ proponents mistakenly assume that remembering is an occurrence, that this occurrence consists in a mental experience in the form of having mental images, and that (...) memory-knowledge is knowledge based on or derived from the memory-experience or the memory-image. These notions are mistaken, Locke claims, because memory consists in immediate knowledge of the past, not in the immediate experience of the past; and memory is a form of knowledge, not a form of quasi-perceptual awareness. The notion that memory is a form of knowledge is considered by Locke to be the standard contemporary account of the nature of memory. It is in these terms that he analyzes the different forms of memory: factual memory, which is defined as retained factual knowledge or knowledge we have possessed before and still possess; practical memory, which is defined as retained practical knowledge or knowledge that consists in possessing certain acquired abilities and skills; and personal memory, which is defined as memory of items that one has experienced for himself. The true test of the contemporary account, as Locke sees it, is whether it allows one to answer affirmatively the question "Is memory reliable?". In the final analysis, however, this seems to be impossible. Generally speaking, one believes that he is entitled to rely on something insofar as it can be established that what is relied upon is normally an accurate guide to the facts of the matter. Nevertheless, if one can never tell when memory is correct, it cannot be established that memory is a reliable guide to anything; thus, one can never be entitled to rely on memories. One solution to this dilemma seems to lie in the suggestion that even if one cannot demonstrate that memory is reliable, this is the simplest and possibly the only plausible assumption to make to explain the plain facts of the human situation. Moreover, one who rejects this pragmatic use of the reliability of memory is committed to saying that knowledge is impossible in any case. If there is no avenue to the past, then there is no assurance that anyone or anything has a past history at all. Without a past history, one has never acquired any information nor any reason for knowing anything, not even about the present. Memory-knowledge, then, is not a matter of simple utility, rather it is a matter of what presuppositions or assumptions have to be made if knowledge is to be possible at all. In effect, Locke sees this as simply a "transcendental argument" for the reliability of memory; that is, an argument that shows that a certain principle has to be accepted as true if a certain form of inquiry is to be possible.—T. L. M. (shrink)

This posthumous and unfinished book by the author of The Revolt of the Masses is in the continental tradition of philosophy as literature. The theme of this historical and etymological essay is the justification of that tradition. Ortega's writing is graceful, and includes aphorisms intended to evoke in the reader the philosophical frame of mind, and a sense of wonder. He finds that philosophy so far has provided no system which is adequately true for us; it is dialectical, revealing the (...) past as a defunct world of errors, which are at the same time involuntary instruments of future truth.. In ancient Greece man first felt an excess of possibilities over needs, both in economics and in explanation. The consequent necessity to choose brought about the phenomenon of rationalism. The means of choosing constitutes method. Science and theology thus emerge in Greece as secondary speculations on primary poetic-mythological explanations. In chapters on Parmenides and Heraclitus, Ortega analyzes the style of each, and illustrates his views on the relation between style and the growth of philosophy. His tool here he calls "etymology," although to those trained in the Anglo-American tradition, his word-analysis is more lyrical than analytic. He concludes that Heraclitus used the oracular or sibylline formula for expressing universal wisdom, and that this in fact is philosophy's most suitable vehicle of expression.—M. B. M. (shrink)

The two pieces translated here, "Philosophy as a Rigorous Science" and "Philosophy and the Crisis of European Man" represent one of the earliest and one of the latest presentations by Husserl of the discipline of phenomenology. The first essay sets up his phenomenological method over against naturalism, psychologism, historicism, and Weltanschauung philosophy as the only way to secure a rigorous scientific basis for philosophy. The second essay was a lecture which introduced the major ideas of his last work, Die Krisis (...) der europäischen Wissenschaften und die transzendentale Phänomenologie. In it he identifies the telos of European civilization as the infinity contained in the ideas of reason. Modern European man's current spiritual crisis stems from his having naturalized the spirit making it a function of or an extension from the physical world. Only by returning to a spirit-centered science with the infinite task of exploring the ideal world of spirit of which nature is but a part can European man harmonize himself with his telos and resolve his spiritual crisis. Lauer's introduction to the whole of Husserl's philosophy is helpful.—P. M. (shrink)

Listening to someone from some distance in a crowded room you may experience the following phenomenon: when looking at them speak, you may both hear and see where the source of the sounds is; but when your eyes are turned elsewhere, you may no longer be able to detect exactly where the voice must be coming from. With your eyes again fixed on the speaker, and the movement of her lips a clear sense of the source of the sound will (...) return. This ‘ventriloquist’ effect reflects the ways in which visual cognition can dominate auditory perception. And this phenomenological observation is one what you can verify or disconfirm in your own case just by the slightest reflection on what it is like for you to listen to someone with or without visual contact with them. (shrink)

This volume offers the first-ever complete English translation of Leibniz’s Dissertatio De Arte Combinatoria together with a critical edition of the original Latin text on fa...

Our research is based on a rather large "library" of various works by M. Drahomanov, which contains his views on religion. Among them: Paradise and Progress, From the History of Relations Between Church and State in Western Europe, Faith and Public Affairs, Fight for Spiritual Power and Freedom of Conscience in the 16th - 17th Centuries,, "Church and State in the Roman Empire", "The Status and Tasks of the Science of Ancient History," "Evangelical Faith in Old England," "Populism and Popular (...) Progress in Austrian Rus, Austrian-Russian Remembrance," "Pious The Legend of the Bulgarians "," The Issues of Religious Freedom in Russia, "" On the Brotherhood of the Baptist or the Baptist in Ukraine, "" The Foreword, " Shevchenko, Ukrainianophiles and Socialism "," Wonderful thoughts about the Ukrainian national affair "," Zazdri gods "," Slavic variants of one Gospel legend "," Resurrection of Christ ", etc. (shrink)

Dünyada müxtəlif dillər mövcuddur. Hal-hazırda əlavə xarici dil öyrənməyə maraq artmaqdadır. Təbii ki bu hər bir şəxsin öz istəyinə və seçiminə bağlıdır. Yəni hər kəs, hər hansı bir dili öyrəndiyi zaman, qarşısında iki məqsəd dayanır; ya o dili sevir, ya da o dili öyrənmək onun üçün lazımdır. Hər bir vətəndaşın borcudur ki, əvvəlcə öz ana dilini mükəmməl şəkildə öyrənsin. Lakin elm və texnologiyanın yüksək inkişaf etdiyi bir zamanda yalnız ana dilini bilmək kifayət etmir. İnsanın hər bir sahədə inkişafı üçün bacardığı (...) qədər başqa dillərə də yiyələnməsi artıq zəruridir. Yeni dil öyrənmənin faydaları çoxdur, yaddaşın güclənməsinə, söz ehtiyatının artmasına, nitqin gözəlləşməsinə səbəb olur. Həmçinin yeni dil öyrənməklə, insanın özünə güvəni artır, ünsiyyət dairəsi genişlənir. Bununla insan yalnız yeni sözlər deyil, yeni mədəniyyətlərlə də tanış olur və nəticədə dünyagörüşü artır. (shrink)