Abstract Centuries of both theologians and astronomers have wondered what the Star of Bethlehem (Matt 2:2, 9) actually was, from miracle to planetary conjunction. Here a history of this search is presented, along with the difficulties the various proposals have had. The natural theories of the Star are found to be a recent innovation, and now almost exclusively maintained by scientists rather than theologians. Current problems with various theories are recognized, as well as general problems with the (...) approach. The interactions between the sciences and religion are categorized and explored. (shrink)

There are three components to boundary objects as outlined in the original 1989 article. Interpretive flexibility, the structure of informatic and work process needs and arrangements, and, finally, the dynamic between ill-structured and more tailored uses of the objects. Much of the use of the concept has concentrated on the aspect of interpretive flexibility and has often mistaken or conflated this flexibility with the process of tacking back-and-forth between the ill-structured and well-structured aspects of the arrangements. Boundary objects are not (...) useful at just any level of scale or without full consideration of the entire model. The article discusses these aspects of the architecture of boundary objects and includes a discussion of one of the ways that boundary objects appeared as a concept in earlier work done by Star. It concludes with methodological considerations about how to study the system of boundary objects and infrastructure. (shrink)

The combination of breeding for increased production and the intensification of housing conditions have resulted in increased occurrence of behavioral, physiological, and immunological disorders. These disorders affect health and welfare of production animals negatively. For future livestock systems, it is important to consider how to manage and breed production animals. In this paper, we will focus on selective breeding of laying hens. Selective breeding should not only be defined in terms of production, but should also include traits related to animal (...) health and welfare. For this we like to introduce the concept of robustness. The concept of robustness includes individual traits of an animal that are relevant for health and welfare. Improving robustness by selective breeding will increase (or restore) the ability of animals to interact successfully with the environment and thereby to make them more able to adapt to an appropriate husbandry system. Application of robustness into a breeding goal will result in animals with improved health and welfare without affecting their integrity. Therefore, in order to be ethically acceptable, selective breeding in animal production should accept robustness as a breeding goal. (shrink)

In 1871, the German philosopher Gustav Teichmüller moved from his Basel chair to the much better paid chair in Tartu, and taught there until his untimely death. Besides philosophy, he had studied various disciplines, including the natural sciences. In the preparation of his own philosophy, he explored the history of philosophy for more than twenty years and made pioneering contributions to the history of concepts. Only by the early-1880s did he begin to elaborate his "new philosophy", an original version of (...) personalism, both anti-idealist and anti-materialist. He did this in three major works which built upon each other. Unwritten remained the keystone of his philosophy, the Philosophie des Christentums, in which Teichmüller wanted to show that the philosophical contents of Christianity were encapsulated by his own personalism. One major objective of his philosophy, as I see it, was regaining reality---in particular the reality of the person---after it had been lost in the wake of the failure of modern representationalism. Notwithstanding its coherentist elements, I see Teichmüller's philosophy as a precursor of direct realism. Although he fell into oblivion soon after, his thoughts were received throughout Europe, notably by Friedrich Nietzsche, Aleksey Kozlov and Nicholas Lossky. His extensive literary remains, which are kept in Basel, remain to be explored. (shrink)

The Star of Redemption, * which presents Franz Rosenzweig's system of philosophy, begins with the sentence "from death, (vom Tode) , from the fear of death, originates all cognition of the All" and concludes with the words "into life. " This beginning and this conclusion of the book signify more than the first and last words of philosophical books usually do. Taken together - "from death into life" - they comprise the entire meaning of Rosenzweig's philosophy. The leitmotif of (...) this philosophy is the life and death of the human being and not the I of philosophical idealism, where man ultimately signifies "for ethics" no more than" . . . a point to which it (ethics) relates its problems, as for science also he (man) is only a particular case of its general laws. "l Rosenzweig deals with the individual's actual existence, that which is termi nated by death; he speaks of the individual's hic et nunc, of his actions and decisions in the realm of concrete reality. This philosophy is not an exposition of theoretical principles. It is not concerned with man in general in abstract time, but rather with the individual human being, designated by a proper name, living in his particular time. ** Human existence in its finiteness and temporalness forms the focus in which Rosenzweig's motif can be gathered together. (shrink)

University of Keele, England This article analyzes the strategies and means by which universalist claims about human nature become successful in science. Of specific interest are the conditions under which claims of this sort are taken to be inherently superior to those which are particularistic or context-specific (a hierarchy of values which we term "universality bias"). We trace the birth of universalists claims in neglected fields, their growth through methodological agreements and the use of invisible referents, and their roots in (...) multiple audiences with different evaluation criteria. Our analysis complements philosophical and political critiques of theories about human nature and demonstrates the historical specificity of universalist claims. (shrink)

The Matthean pericope of the Magi and the star of Bethlehem prompted a variety of responses among early Christian commentators of the second to the fifth centuries. These responses reflect a range of attitudes among the early Christians towards astrology, which was a fundamental and pervasive aspect of ancient Greco-Roman religion and culture. Some early Christian writers repudiated astrology absolutely, while others sought to grant it some degree of accommodation to Christian beliefs and practices. Interpretations of the Matthean (...) pericope offer an index to the range of such views. This paper examines the motifs of the Magi and of the star in Matthew 2.1-12 as well as a number of early Christian interpretations of the pericope as evidence of a pattern of ambivalence in early Christian attitudes toward Greco-Roman astrology. Résumé La péricope matthéenne sur les Mages et l’étoile de Bethléem a suscité des réactions variées chez les commentateurs chrétiens du iie au ve siècle. Ces réactions reflètent, chez les premiers chrétiens, une diversité d’attitudes envers l’astrologie, qui était un aspect fondamental et omniprésent de la religion et de la culture gréco-romaines. Certains auteurs chrétiens de l’époque répudiaient absolument l’astrologie alors que d’autres cherchaient à l’accommoder jusqu’à un certain point aux croyances et aux pratiques chrétiennes. Les interprétations de la péricope matthéenne permettent de prendre la mesure de ces opinions divergentes. Cet article examine les thèmes des Mages et de l’étoile en Matthieu 2,1-12, ainsi qu’un certain nombre d’exégèses anciennes de la péricope. Celles-ci fournissent autant d’indices de l’ambivalence de l’attitude chrétienne face à l’astrologie. (shrink)

The Abolition of Man, C. S. Lewis's masterpiece in ethics and the philosophy of science,warns of the danger of combining modern moral skepticism with the technological pursuit of human desires. The end result is the final destruction of human nature. From Brave New World to Star Trek, from Steampunk to starships, science fiction film has considered from nearly every conceivable angle the same nexus of morality, technology, and humanity of which C. S. Lewis wrote. As a result,science fiction (...) film has unintentionally given us stunning depictions of Lewis's terrifying vision of the future. In Science Fiction and the Abolition of Man: Finding C. S. Lewis in Sci-Fi Film and Television, scholars of religion, philosophy, literature, and film explore the connections between sci-fi film and the three parts of Lewis's book:how sci-fi portrays "Men Without Chests" incapable of responding properly to moral good, how it teaches the Tao or "The Way," and how it portrays "The Abolition of Man.". (shrink)

This paper discusses Franz Rosenzweig’s use of the term “the unconscious” (das Unbewußte) and possible influences on his understanding of it. I claim that for Rosenzweig, it is through the unconscious that the individual becomes aware of himself and becomes capable of fulfilling his longing to achieve self-fulfillment and eventually to take part in a collective redemption. The unconscious is often perceived as the mental sphere related to trauma and repression in which defense mechanisms and fantasies are evolved. Fantasies are (...) psychological tools that allow the individual to cope with trauma, but they are also “layers of enclosedness,” illusions that should be dissolved. Hence, in the unconscious, we find a possibility of liberation. (shrink)

The bases of tenets of the World came from the East; Pythagoras learnt all there up the 26 years. At a home, the east ideas where took in no; then he bound the mathematics with the elements of matter. This was the best way to a blood feud of the all Humanity. The 17th age gave the bases of mathematics and the Greek atomism; this had led to the paranoia in all sciences. The LCE was brought in 19th age with (...) bases no; really it was the box of Pandora in the form of wrong sciences of the Nature. The wise revenge of Pythagoras was in the form of riddle for the best thinkers in the World in all times; us solved one in the 50th years. A base of the World is of the material space (MS) with praatoms (PAs) Ao; they are of the affinity to matter. A density of the MS is of ~ 5.10‐6 kg/m3 close to the Ears. PA Ao is of quant of matter and antimatter; they are of rotate in the different sides. All matter takes up Ao and to grow. In the giant stars to go the bursts giving Ao, or caloric. The matter of being in the World on base of the key law of conservation of heat (caloric) and matter by loss of energy; it is main. Leibniz offered to the conservation of mv2 in the World. But Newton knew that any move is damped, and it need in filled up. This the author proved by tests over the 300 years just. D.Bernoulli given to the model of gas. I. Kant proved that mv2 is the quantity of heat by stop of the body; it is no the energy! A key leitmotiv of thought is blocked the grasp of facts if ones not leaded to an accepted concept. P. Mayer had the blunder in base of the LCE; a work of gas expansion in Torricelli tube is equal nil strong! This is the gross blunder of a sick paranoiac! The 21 age gave up a new philosophy and a way to endless engine. The super skills from ideal quartz with moving jaws to respond to the all new philosophy and sciences. (shrink)

What moves the stars, and what do their movements mean for life on earth? As conventionally divided, even if the distinction of cognates was complicated already in antiquity, the answers to these questions belong respectively to astronomy and astrology. Graeco-Roman astrology generally dispensed with explanations of causes – perhaps because systems proposed by the likes of Aristotle, the topic of B. and C., were taken as given – to focus on describing and linking effects to the dispositions of celestial bodies (...) believed to produce them. This review article considers the substantial contributions of L. as well as B. and C., focused on astrology and astronomy respectively, to a growing field of interdisciplinary inquiry – besides Classics, key contributors are Assyriology, Egyptology and History of Science – on the astral sciences. This field takes account of scholarly engagement with the stars, of their alleged effects on earth and of a wider cultural and historical embedding, reflected in religion, literature and art. The three books under review provide richly contextualised studies of individual sources relevant to the astral sciences, from a primarily philological standpoint, which will be instrumental in assessing the place of their ancient authors in the history of knowledge. (shrink)

The aim of this essay is to understand the relationship between knowledge and society and to reflect on the links between science and political decision making. The text evolved from a number of reflections the author made while president of the European Astronomical Society, president of the Swiss Academy of Sciences and vice-president of the European Academies Science Advisory Council (EASAC). The book starts by using astronomy as a showcase for what science brings to society in terms of intellectual enrichment, (...) of practical tools and of societal inputs. It then turns to looking generally at science as a human endeavour for which pleasure is a prime motivation and it describes the efforts made by researchers to rationalise their findings, thus making them universally acceptable. The author also describes the role of science in shaping our environment and discusses resulting responsibility of the scientists with respect to the evolution of the world. As part of an analysis of the relationship between science and policy the author describes the way in which scientists can (and must) bring knowledge in the political decision making process. The argument is closed with considerations on global governance, while the conclusion puts evidence based decision making processes in relation with the more emotional aspects of our behaviour. The readership of the book is intended to be all scientists involved in "science for policy" activities, as well as those who should become more active in this domain. This includes, but is not limited to, all members of science academies. Astronomers will find specific elements to help them think about their science. The intended readers of the book also include civil servants and policy makers who develop legislation and societal action in domains in which a solid knowledge base is important. The book should furthermore be of interest to citizens following public life and all those worried by the "post evidence" trends in policy. (shrink)

Clears up misconceptions about irrationalism and looks at madness, dreams, laughter, genius, imagination, altered states, and emotions.

Star Wars action figures can help illuminate some theories about the science of the mind and how religious thinking originated. Playing with action figures illustrates how a science of the mind is possible and what can go wrong in the religious mind. In the twentieth century, philosophers began to think of new ways to study the mind. The key is to switch from a first‐person view to a third‐person perspective. Playing with Star Wars action figures illustrates Daniel Dennett's (...) theory of how a science of the mind is possible. To illustrate, this chapter presents a vintage Blue Snaggletooth action figure that sells for hundreds of dollars on eBay. The chapter highlights that understanding what happens when we play with action figures can reveal how a science of mind is possible and illuminate a theory of the origins of the religious mind. (shrink)

The Absolute, philosophized most saliently about by Georg Hegel, encompasses the entirety of reality. The absolute is composed of five dimensions – height, length, width, time, and justice. The five dimensions operate dialectically, and the normative values of reality inhere within the fifth dimension – hard, soft, moral, ethical, yellow, etc. ad infinitum. The normative values from the fifth dimension, in combination with the brain, comprise the human mind. With the issues of climate change, world-wide biosphere destruction, nuclear weapons, international (...) trade regimes, humanity has created the phenomenon of global politics – thereby changing the fifth dimension. The argument in this volume is that the broadcast iterations of Star Trek allow us to comprehend significant aspects of justice and the politics of globalism – created through the advent of science, technology, engineering, etc. The creators of Star Trek hold that nationalism is a psychological pathology and internationalism is rationality. (shrink)

Superficially, it appears that humans enjoy a wide variety of spiritual and religious traditions. In fact, the vast majority of human belief systems (secular and religious/spiritual) are rooted in and colonized by the same ancient Persian narratives (specifically the Zoroastrian Frame), narratives created by elite actors with an elite agenda in mind. This article explores the ancient roots of our modern spiritual and secular beliefs, demonstrates their ideological and colonial character, briefly examines the emotional, psychological, and spiritual toll, and outlines (...) a course of research for those interested in moving forward with an authentic decolonizing agenda. The paper introduces several terms into the lexicon, including Symbol Factories, Ideological Institutions, and Toxic Socialization. Keywords: Zoroastrianism, accumulating class, regime of accumulation, master narratives. (shrink)

Science fiction fandoms tend to contain significant numbers of fans who feel angry and resentful about the handling of the franchise they are fans of, because of the stories the franchises owners have told. The paper addresses the question of when, if ever, such anger and resentment are justified. Special attention will be paid to Star Trek fandom, but other fandoms will be considered, including those for Star Wars and Doctor Who. Various proposed justifications for anger and resentment (...) will be considered, including that franchise owners have misled fans about the stories they would tell, have wasted opportunities to produce good art, have reduced the value of older art, have engaged in a form of cultural appropriation by repurposing old characters, have caused needless offense of a sort akin to the offense of religious sensibilities, have offended against the principle of utility, and have taken advantage of unjust copyright laws. The paper does not champion a conclusion about when, if ever, fan anger and resentment are justified. However, it is concluded that, contrary to what is often assumed, it is not obvious that fan anger and resentment are always unjustified, and so fan anger and resentment cannot always be dismissed out of hand. (shrink)

The permutation of basic atoms—nitrogen, hydrogen, oxygen, carbon and phosphorus―into the biomolecules DNA and RNA, subsequently evolved in cells and brains, defining the origin of life and intelligence, remains unexplained. Equally the origin of the genetic information and the intertwined nature of ‘hardware’ and ‘software’ involved in the evolution of bio-molecules and the cells are shrouded in mystery. This treatise aims at exploring individual and swarm behaviour patterns which potentially hint at as yet unknown biological principles. It reviews theories of (...) evolution with perspectives from the earth sciences, commencing with the earliest observed records of life. This is followed by reviews and discussion of the building blocks of life, marine and terrestrial communities, the arthropods, birds and finally humans. It is suggested that, further to the mutation/natural selection processes established by Darwin and Wallace, an understanding of the evolution of intelligence remains little understood. A directionality of evolutionary trajectories is evident, not least the purposeful thinking process of humans as well as animals. It is not clear how directional intelligence, manifested for example by the collective intelligence of arthropod colonies, has evolved from mutation/natural selection processes. Potential clues for the understanding of life and evolution are provided by Aristotle’s dictum of “the whole being greater than the sum of the parts”, Niels Bohr’s principle of quantum complementarity and George Ellis’ theory of top-down causality. Inherent in the question of the origin of life is an anthropocentric bias, related to the self-referential Anthropic Principle and theological paradigms of man’s supposed dominion over all other species. The Anthropic Principle, however, should be capable of being circumvented using the scientific falsification method, assuming universal verified constants of physics. The phenomenon of the human mastery of fire and the splitting of the atom, leading to the seventh major mass extinction of species, remains incomprehensible. (shrink)

On July 14, 1866 Franz Brentano stepped up to the pulpit to defend his thesis that “the true method of philosophy is none other than that of the natural sciences”. This thesis bound his first students to him and became the north star of his school, against the complex background of the progress and specialization of the natural sciences as well as the growth and professionalization of universities. I will discuss the project of the renewal of philosophy as science (...) in the School of Brentano and how this aimed to provide a scientific foundation for the humanities independently from the natural sciences, while preserving the unity of science. Through his well-known re-introduction of the concept of intentionality as criterion to distinguish internal and external perception, Brentano was able to supply an empirical foundation for the Geisteswissenschaften. While philosophy would use the method of natural science, its domain would not be nature, but consciousness: a full-blooded science of the mind that did not require a reduction to the physical in order to be scientific. Brentano’s science of consciousness was empirical, but not experimental, and relied on subjective methods, but was not introspective. Brentano’s students Carl Stumpf, Anton Marty, Alexius Meinong, Christian von Ehrenfels, Edmund Husserl and others came to occupy important chairs in philosophy throughout Europe. While they were certainly not all orthodox followers, they adapted and spread his theories far and wide in the schools and movements they founded and influenced: Gestalt psychology, Prague linguistics, phenomenology, etc.. Moreover, the 19th century idea of scientific research as a collaborative and collective achievement led to a division of labor in Brentano’s school. Each of his students was meant to work out a part of the greater whole: Stumpf, the philosophy of sound and music; Marty, language; Meinong the history of philosophy; Husserl, mathematics; etc. Yet all of them also contributed to the shared project of the renewal of philosophy as science and discussed the (foundational) relation of philosophy to other sciences in programmatic works. Though often forgotten and overlooked due to contingent historical circumstances, the scientific paradigm of the School of Brentano was very fruitful and highly influential in philosophy and the human sciences in general, throughout the second half of the 19th and into the 20th centuries. Yet it is relevant then as now to preserve the independent scientific dignity of the humanities. (shrink)

Abstract.The present paper is an attempt to describe the observational practices behind a large and homogeneous body of Babylonian observation reports involving planets and certain bright stars near the ecliptic (“Normal Stars”). The reports in question are the only precise positional observations of planets in the Babylonian texts, and while we do not know their original purpose, they may have had a part in the development of predictive models for planetary phenomena in the second half of the first millennium B.C. (...) The paper is organized according to the following topics: (I) Sections 1–3 review the format of the observations and the texts in which they are found; (II) Sections 4–6 discuss the composition of the Normal Star list; (III) Sections 7–8 concern the orientation of the reported celestial directions from star to planet; (IV) Sect. 9 concerns the relationship between the reported distances and the actual angular distances between planet and star; and (V) Sect. 10 discusses the reports of planetary stations, which are the most common reports giving precise locations of planets when they are not near their closest approach to stars, and draws some brief general conclusions about the utility of the Babylonian observations for estimating planetary longitudes and calibrating models in antiquity. (shrink)

One source for the accounts of astrology and astronomy in Gundissalinus's De divisione philosophiae might have been an introduction to the science of the stars influenced by, if not originating from, the School of Chartres. This introduction survives in slightly different forms in three manuscripts, and is edited, along with Gundissalinus's chapters on astronomy and astrology, in the Appendix.

The assumption that Ptolemy adopted star coordinates from a star catalog by Hipparchus is investigated based on Hipparchus’ equatorial star coordinates in his Commentary on the phenomena of Aratus and Eudoxus. Since Hipparchus’ catalog was presumably based on an equatorial coordinate system, his star positions must have been converted into the ecliptical system of Ptolemy’s catalog in his Almagest. By means of a statistical analysis method, data groups consistent with this conversion of coordinates are identified. The (...) found groups show a high degree of agreement between Hipparchus’ and Ptolemy’s data. The value of the obliquity of the ecliptic underlying the conversion is estimated by adjustment and statistically agrees with Ptolemy’s value of this parameter. The results allow the assumption that Ptolemy’s coordinates were determined from Hipparchus’ coordinates by an accurate star globe or even by calculation. For a calculative derivation of ecliptical coordinates from equatorial ones, possible calculation methods are discussed considering the mathematics of the Almagest. (shrink)

An argument opposing the unrestricted use of quantification in modal logic has been put forward by Quine. Central to this argument are the two phrases, The Morning Star, The Evening Star.One form of the argument is obtained by considering the following two statements: It is necessary that the Morning Star is identical with the Morning Star. It is not necessary that the Evening Star is identical with the Morning Star.

Predicates like “coloring‐the‐star” denote events that have a temporal duration and a culmination point (telos). When combined with perfective aspect (e.g., “Valeria has colored the star”), a culmination inference arises implying that the action has stopped, and the star is fully colored. While the perfective aspect is known to constrain the conceptualization of the event as telic, many reading studies have demonstrated that readers do not make early commitments as to whether the event is bounded or unbounded. (...) A few visual‐world studies tested the processing of telic predicates during online sentence processing, demonstrating an early integration of aspectual and temporal cues. By employing the visual‐world paradigm, we tested the incremental processing of the perfective aspect in Italian in two eye‐tracking studies in which listeners heard durative predicates in the perfective form in a scenario showing a completed and a non‐completed event. Differently from previous studies, we compared telic durative predicates such as “coloring‐the‐star” to punctual predicates such as “lighting‐the‐candle.” While for punctual predicates, the inferences of telicity (the event has a telos) and of culmination (the telos is reached) are lexically encoded in the perfective verb, for durative predicates, the degree of event completion (visually encoded) needs to be integrated with perfective aspect (linguistically encoded) for the culmination inference derivation. By modulating the interaction of visual and linguistic stimuli across the two experiments, we show that the verb's perfective aspect triggers the culmination inference incrementally during sentence processing, offering novel evidence for the continuous integration of linguistic processing with real‐world visual information. (shrink)

Advanced Virgo detector joined advanced LIGO twin detectors on 1st August 2017 in the quest to look for the gravitational waves. The global network of three detectors was operational for 25 days until the LIGO shut down on 25th August 2017. Two gravitational wave events were registered during this period. One of them was the binary black hole merger dubbed as GW170814 and other one is binary neutron star merger referred to as GW170817. Electromagnetic counterpart associated with binary neutron (...) star merger was promptly identified which marks the beginning of multi-messenger astronomy. This article describes these events emphasizing on the crucial role played by the Virgo and focusing on some methodological issues. (shrink)

This article examines a set of letters and observational reports that passed between Ludwig of Württemberg and Wilhelm of Hesse in response to the nova of 1572. Discussing the terminology used in this debate, it demonstrates that the terms “star” and “comet” were not unambiguous for sixteenth-century authors. A consideration of the relationship between accuracy of observation and the accuracy of the conclusions drawn from them, judged in the terms of twentieth-century astronomy, shows that those observers with the best (...) instruments did not always have the best understanding of what they had observed. Finally, the role played by theology in facilitating interpretations that did not accord with Aristotelian physics is highlighted. (shrink)

This article is devoted to the study of the specific features of the display of social networks and computer technologies in the late 70s of the XX – early 20s of the XXI century in the fantastic Star Wars universe created by American filmmaker D. Lucas. In this scientific work, the authors argue for the relevance and scientific novelty of the problem under consideration. The study examines the peculiarities of the influence of social networks and computer technologies in modern (...) conditions. The article provides a justification for the need to analyze the reflection of this issue in fantasy art as an auxiliary factor in the development of the prognostic function of science. This paper provides a reasoned explanation of the choice of the Star Wars universe as an object of research, taking into account its importance in the fantasy genre, as well as in order to refute stereotypes according to which Star Wars is a collection of entertainment materials in which there is completely no semantic load. The authors analyze the fundamental differences in the coverage of the studied problem in such genres of art as literature and cinema in the context of Star Wars. The article examines the features of the evolution of the display of cybernetic technologies and communication network platforms in the Star Wars universe in the mid‑1970s – early 2020s, as a reflection of the real development of scientific and technological progress, as well as an example of the impact of political, socio‑economic and moral factors on the use of online platforms and computer technology during the period under study. In this article, using the example of the Star Wars universe, the features of the transformation of the role of specialists in the field of high technology through the prism of the attitude of artists to them – more specifically, writers and cinematographers – are also considered. The article also examines the moral and ethical aspect of the use of computer technology and social networks, considered by artists who have made a significant contribution to the development of the fantastic epic of Star Wars. (shrink)

Historiography has pointed out that the time between the mid 1910s and the early 1930s can be considered a pivotal period in the history of stellar astrophysics. In those years, scholars like Saha and Eddington first applied atomic physics to astrophysics. Theoretical astrophysics was born. This led to the development of the first physically sound models for stellar interiors and atmospheres. These landmark achievements spurred scholars to elaborate theories for stellar evolutions, and in the following decades several astrophysicists focused on (...) this problem. The evolutionary role of red giants turned out to be the main issue. Those stars were initially assumed to be young ones going through the formation stage, but astrophysicists gradually realized that they were rather to be considered old, evolved stars. The solution of the giant stars issue required a couple of decades: it was not until the mid 1950s that a satisfactory explanation was obtained. This provides a detailed picture of the theories of stellar evolution from the 1930s to the 1950s and of the solution to the red giants problem, with special emphasis on how such a solution was made possible by a series of subsequent steps: the identification of changing chemical composition as a main evolutionary feature of a star, the inclusion of nuclear physics within the theoretical framework of stellar astrophysics, the recognition of the importance of inhomogeneities that settle within stars as nuclear processes go on. (shrink)

In the eighteenth century, the sciences and their applications adopted a new attitude based on quantification and, increasingly, on a notion of precision. Within this process, instruments played a significant role. However, while new devices such as the micrometer, telescope, and pendulum clock embodied a formerly unknown potential of precision, this could only be realized by defining a set of practices regulating their application and control. The paper picks up the case of pendulum clocks used in eighteenth-century observatories in order (...) to show the process of learning in the course of which the pendulum clock first became a precision instrument. By examining the results of an especially developed statistical analysis, conducted to compare the performance of eighteenth-century clocks, it highlights the diversity of conditions, attitudes, and manners of handling that are characteristic for the epoch. In this way, it underlines the necessity of standardization of timekeeping practices rather than exclusively focusing on the technological development of clocks. Ultimately, the paper discusses the role of makers and users in order to show the evolution of a “precision instrument.”. (shrink)

This paper argues for continuity in purpose and specific results between some hand drawn nebulae, especially those ‘descriptive maps’ by John F. W. Herschel and E. P. Mason in the late 1830s, and the first photographs made of the nebulae in the 1880s. Using H. H. Turners’ explication in 1904 of the three great advantages of astrophotography, the paper concludes that to some extent Herschel’s and Mason’s hand-drawings of the nebulae were meant to achieve the same kinds of results. This (...) is surprising not only because such drawings were conceived and achieved over forty-years earlier, but also because the procedures used in the production of these pictorially and metrically rich images were those directly inspired by cartography, geodesy, and land-surveying. Such drawings provided the standard for what was depicted, expected and aimed at by way of successful representations of the nebulae; standards that seemed to have been used to judge the success of nebular photographs. Being conditions of expectation and possibility for later photography, these drawings were themselves made possible by such techniques of representation and measurement as isolines and triangulation, so fundamental to Imperial and ‘Humboltian science.’Keywords: Ebenezer Porter Mason; Cartography; Draughtsmanship; Observation; Scientific Representation; Philosophy of Scientific Practice. (shrink)

Standard arguments for essentialism with respect to natural kinds such as gold, star, water or tiger enlist essentialist principles or essentialist intuitions. I argue that we need neither. All it takes to establish essentialism for the kinds in question are insights from science and semantics. Semantics establishes that natural kind predicates such as “is gold” or “is a star” are paradigm terms whose application conditions are relationally determined, object involving, and actuality dependent. Science assures us that a posteriori (...) hypotheses such as “∀x” are deeply explanatory, as well as true. Taken together, these results establish essentialism for kinds such as gold, star, water or tiger. I consider this a deflationary result. When it comes to natural kind essentialism, there is no need for substantial metaphysics, be it essentialist or otherwise. (shrink)

It is a commonplace in the history of science that reputations of scientists play important roles in the stories of scientific knowledge. I argue that to fully understand these roles we should see reputations as produced by communicative acts, consider how reputations become known about, and study the factors influencing such processes. I reapply James Secord's ‘knowledge-in-transit’ approach; in addition to scientific knowledge, I also examine how ‘biographical knowledge’ of individuals is constructed through communications and shaped by communicative contexts. My (...) case study is Carl Sagan, widely discussed – amongst scientists, media professionals and publics – for his skill as a charismatic popularizer, his perceived arrogance, his political activism, and his debated merit as a researcher. By examining how aspects of Sagan's reputation circulated alongside his scientific work – rather than existing as a static context for his scientific work – I show how different forms of knowledge (biographical and scientific) influence each other as they circulate. (shrink)

An excerpt from CHAPTER I. THE FORCES OF NATURE. You have asked me to give you an account of the opinions really held by some of those authors whose views you have seen caricatured in Punch and censured in religious periodicals. The subjects on which you specially questioned me were the speculations of Mr. Darwin, and the real or pretended discoveries of mesmerists, spiritualists, homoeopathists, and phrenologists. But a little reflection will, I think, convince you, that if I pretended to (...) give you, in a few conversations, the result of the lifelong labours of a succession of earnest and clever men, I could in reality only succeed in puzzling you, and in proving my own unfitness to act as the interpreter of any serious thinker whatever. It will be, I think, more to the purpose if I endeavour to put into your hands an end of the golden thread which, as it seems to me, binds all science together, giving us a clue through its intricate mazes, bridging over its awful chasms, and enabling us to walk fearlessly, even where we can see no light. If you like it, I will afterwards try to tell you what I believe to be the true meaning of some of the real or supposed revelations of modern investigation : but my main object will be to show you how you may, throughout your studies, make facts speak for themselves, and get help from books instead of being confused by them. In the first chapter of the Bible we read that the earth was originally without form and void. Next it is said that the "Spirit of God" moved upon the face of the waters. And throughout the Old Testament it is easy to see that the writers attributed the settling down of things in general, the ordering of the heavens, the coming up of dry land from under the sea, the clearing away of mists and vapours, and the production of life upon the earth, to the action of this Spirit (or Word) of God upon the chaos of matter. And not only so, but they evidently believed this living Word or Spirit to be continually present throughout creation, at every rising of sun or moon or star, in all cosmical changes, at every birth of man or beast, at every recovery of man or beast from sickness, in all growth, in all life, in all enjoyment; and to be at each moment the indispensable preserver of every living thing from decay.... (shrink)

Analisi critica d'opera, incentrata sulla recezione dell'opera di Tolomeo durante il Medioevo e sul pensiero scientifico-filosofico dell' Età Medievale e Rinascimentale.

Foundational puzzles surround gravitational thermal physics—a realm in which stars are treated as akin to molecules in a gas. Whether such an enterprise is successful and the domain of thermal physics extends beyond our terrestrial sphere is disputed. There are successes and paradoxical features. Callender :960–981, 2011) advocates reconciling the two sides of the dispute by taking a broader view of thermodynamics. Here I argue for an alternative position: if we are careful in distinguishing statistical mechanics and thermodynamics, then no (...) reconciliation is required. Both sides can live in harmony because whilst statistical mechanics applies, thermodynamics does not. This state of affairs—the applicability of statistical mechanics without the emergence of thermodynamic behaviour—can be explained in terms of an infamous infinite idealisation: the thermodynamic limit. (shrink)

Babylonian methods for predicting planetary phenomena using the so-called goal-year periods are well known. Texts known as Goal-Year Texts contain collections of the observational data needed to make predictions for a given year. The predictions were then recorded in Normal Star Almanacs and Almanacs. Large numbers of Goal-Year Texts, Normal Star Almanacs and Almanacs are attested from the early third century BC onward. A small number of texts dating from before the third century present procedures for using the (...) goal-year periods to predict planetary phenomena. In addition, two texts, one dating to the late sixth century BC and the other to the late fifth century BC, contain planetary data which was probably predicted using these methods. In this article, I discuss a further example of a tablet dating from before the third century BC which contains planetary data predicted using the goal-year periods. I show that the planetary phenomena contained in this tablet can be dated to the twelfth year of the reign of Artaxerxes III (347/6 BC) and that they were predicted using goal-year periods without the application of the kind of corrections which were used in the third century BC texts in order to produce more accurate predictions. (shrink)