Community detection is a major issue in network analysis. This paper combines a socio-historical approach with an experimental reconstruction of programs to investigate the early automation of clique detection algorithms, which remains one of the unsolved NP-complete problems today. The research led by the archaeologist Jean-Claude Gardin from the 1950s on non-numerical information and graph analysis is retraced to demonstrate the early contributions of social sciences and humanities. The limited recognition and reception of Gardin's innovative computer application to the humanities (...) are addressed through two factors, in addition to the effects of historiography and bibliographies on the recording, discoverability, and reuse of scientific productions: (1) funding policies, evidenced by the transfer of research effort on graph applications from temporary interdisciplinary spaces to disciplinary organizations related to the then-emerging field of computer science; and (2) the erratic careers of algorithms, in which efficiency, flaws, corrections, and authors’ status, were determining factors. (shrink)

This book explores the rise of theoretical physics in 19th century Germany. The authors show how the junior second physicist in German universities over time became the theoretical physicist, of equal standing to the experimental physicist. Gustav Kirchhoff, Hermann von Helmholtz, and Max Planck are among the great German theoretical physicists whose work and career are examined in this book. Physics was then the only natural science in which theoretical work developed into a major teaching and research specialty in (...) its own right. Readers will discover how German physicists arrived at a well-defined field of theoretical physics with well understood and generally accepted goals and needs. The authors explain the nature of the work of theoretical physics with many examples, taking care always to locate the research within the workplace. The book is a revised and shortened version of Intellectual Mastery of Nature: Theoretical Physics from Ohm to Einstein, a two-volume work by the same authors. This new edition represents a reformulation of the larger work. It retains what is most important in the original work, while including new material, sharpening discussions, and making the research more accessible to readers. It presents a thorough examination of a seminal era in physics. (shrink)

Presents the inside story of the creation of the atomic bomb in terms understandable to the layman, and discusses the crisis of conscience following the demonstration of the bomb's destructive effects on Hiroshima.

In this paper, we examine the history of the idea among physicists that there is a fundamental limit to physical measuring processes and that this limit is set by noise. In contrast to previous studies, that have focused on the realization of the existence of such a limit, we focus on the noise aspect of this history. In his monograph entitled Noise from 1954, the Dutch-American physicist and pioneer of noise Alder van der Ziel described how noise (...) came to be seen as of practical importance for measurements:The study of spontaneous fluctuations was primarily theoretical as recently as 1925. At that time it. (shrink)

The aim of this paper is to invalidate the hypothesis that human consciousness is necessary in the quantum measurement process. In order to achieve this target, I propose a considerable modification of the Schrödinger’s cat and the Dead-Alive Physicist thought experiments, called “PIAR”, short for “Physicist Inside the Ambiguous Room”. A specific strategy has enabled me to plan the experiment in such a way as to logically justify the inconsistency of the above hypothesis and to oblige its supporters to rely (...) on an alternative interpretation of quantum mechanics in which a real world of phenomena exists independently of our conscious mind and where observers play no special role. Moreover, the description of the measurement apparatus will be complete, in the sense that the experiment, given that it includes also the experimenter, will begin and end exclusively within a sealed room. Hence, my analysis will provide a logical explanation of the relationship between the observer and the objects of her/his experimental observation; this and a few other implications will be discussed in the fourth section and in the conclusions. (shrink)

The aim of this paper is to refute the hypothesis that the observer’s consciousness is necessary in the quantum mechanics measurement process. In order to achieve our target, we propose and investigate a variation of the Schrödinger’s cat thought experiment called “DAP”, short for “Dead-Alive Physicist”, in which a human being replaces the cat. This strategy enables us to logically disprove the consistency of the above hypothesis, and to oblige its supporters either to be trapped in solipsism or to rely (...) on an alternative interpretation of quantum mechanics in which the conscious observer plays the sole role of acknowledging the experimental results. Our analysis hence provides support to clarify the relationship between the observer and the objects of her/his experimental observation; this and a few other implications are discussed in the fourth section and in the conclusions. (shrink)

Traditionally, historians have taken it for granted that Britain’s National Physical Laboratory was created as the result of demands from a “professional” body of university-based physicists for a state-funded scientific institution. Yet paying detailed attention to the history of the NPL’s originating institution, Kew Observatory, shows that the story is not so clear-cut. Starting in the 1850s, Kew Observatory was partly a center for testing meteorological instruments and other scientific equipment in return for fees. Long after the 1850s, (...) the observatory was run by self-funded devotees of science. Paid university physicists only assumed a dominant role on its governing committee in the last two decades of the nineteenth century, by which time instrument-testing was already the observatory’s main role. This paper argues that the rise of the university physicists – together with the desire of some of these physicists for a national institution that tested electrical standards – can only partially explain the origins of the NPL, and that Kew was in some ways a national physical laboratory before there were many physics teaching posts in British universities. This paper is a case study that illustrates a need to reassess the importance of university physicists in shaping British science at the end of the nineteenth century. (shrink)

A number of recent papers or monographs have examined Susan Stebbing’s criticisms of Arthur Eddington’s scientific-philosophical writing. These papers focus on Stebbing’s critique of Eddington’s attempt to infer philosophical conclusions from developments in modern physics, his view that there is a discrepancy between the world of science and the world of common sense (best encapsulated by his famous ‘two tables’ metaphor), and his use of “inexact language” to try and convey modern scientific insights to his readers. On November 10th, 1938, (...) Eddington presented a paper at the Moral Sciences Club in Cambridge entitled “Prof. Stebbing’s ‘Philosophy and the Physicists’.” Eddington did not go on to publish this paper and it is not discussed in relevant scholarship. However, the details of Eddington’s talk are outlined in the minutes of that meeting. I argue that these minutes provide new insights into both the Stebbing-Eddington debate and developments in Eddington's late philosophical views. A full transcription of the minutes are included as an Appendix to this paper. (shrink)

Today, we take international collaborations as a necessity, but 150 years ago, when travel was not so convenient, it involved an enduring and time-consuming challenge. This paper presents letters and reports written by German physicist Julius Plücker to his wife, Antonie née Altstädten describing his travels to Great Britain and France between 1853 and 1866. These letters provide a view into how international collaboration and communication were developed and maintained as well as how friendships were built within the scientific community (...) during the early industrial age, prior to telegraph, telephone, email, and internet. (shrink)

In this paper, I provide the first in-depth discussion of Susan Stebbing’s views concerning our experience of the passage of time – a key issue for many metaphysicians writing in the first half of the twentieth century. I focus on Stebbing’s claims about the passage of time in Philosophy and the Physicists and her disagreement with Arthur Eddington over how best to account for that experience. I show that Stebbing’s concern is that any attempt to provide a scientific account (...) of the passage of time will face problems, since the events described by physics are necessarily measured against the passage of time. I then identify views elsewhere in her philosophical corpus that can help shed light on this claim. Ultimately, I argue, Stebbing’s views on time should be construed as part of her wider commitment to ‘realism’. To be a realist, for Stebbing, is to accept a set of propositions which are a pre-requisite for even beginning to analyse the world around us. For Stebbing, I argue, part of what it means to be a realist is to accept our experience of the passage of time as something fundamental that cannot itself be subject to analysis. (shrink)

This biography provides a stimulating and coherent blend of scientific and personal narratives describing the many achievements of the theoretical physicist Herbert Fröhlich. For more than half a century, Fröhlich was an internationally renowned and much respected figure who exerted a decisive influence, often as a 'man ahead of his time', in fields as diverse as meson theory and biology. Although best known for his contributions to the theory of dielectrics and superconductivity, he worked in many other fields, his most (...) important legacy being the pioneering introduction quantum field-theoretical methods into condensed matter physics in 1952, which revolutionised the subsequent development of the subject. Gerard Hyland has written an absorbing and informative account, in which Herbert Fröhlich's magnetic personality shines through. (shrink)

Outstanding text by one of the 20th century's foremost physicists dramatically explains how the central laws of physical science evolved, from Pythagoras' discovery of frequency ratios in the 6th century BC to today's research on elementary particles. Includes fascinating biographical data about Galileo, Newton, Huygens, Einstein and others. 136 illustrations.

Hailed by the Journal of the History of Astronomy as "charming and witty," this chronicle by a renowned physicist traces the development of scientific thought from the works of the "founding fathers" — Galileo, Huygens, and Newton — to the more recent discoveries of Maxwell, Boltzmann, and Gibbs. 1984 edition.

The history of physics ranges from antiquity to modern string theory. Since early times, human beings have sought to understand the workings of nature--why unsupported objects drop to the ground, why different materials have different properties, and so forth. The emergence of physics as a science, distinct from natural philosophy, began with the scientific revolution of the 16th and 17th centuries when the scientific method came into vogue. Speculation was no longer acceptable; research was required. The beginning of the (...) 20th century marks the start of a more modern physics. Physicists began to study the atom, with its electrons and its nucleus. Then they began to look at the fundamental question of the forces that hold the nucleus together and the particles that account for the natural forces. This book approaches the history of physics from a biographical point of view, considering people to be more interesting than things, and the combination of the two more interesting than the sum of the individual parts. After a brief overview of classical and modern physics, 336 one-page biographies of individuals who have made significant contributions to the field of physics are presented. (shrink)

The breakthroughs that have had the most transformative practical impacts, from thermodynamics to the Internet. Physics informs our understanding of how the world works - but more than that, key breakthroughs in physics have transformed everyday life. We journey back to ten separate days in history to understand how particular breakthroughs were achieved, meet the individuals responsible and see how each breakthrough has influenced our lives. It is a unique selection. Focusing on practical impact means there is no room (...) for Stephen Hawking's work on black holes, or the discovery of the Higgs boson. Instead we have the relatively little-known Rudolf Clausius (thermodynamics) and Heike Kamerlingh Onnes (superconductivity), while Albert Einstein is included not for his theories of relativity but for the short paper that gave us E=mc2 (nuclear fission). Later chapters feature transistors, LEDs and the Internet. Finally we ask: what could the eleventh day be? - i.e. the greatest development yet to come. (shrink)

This paper offers a contribution to debates around integrative aspects of systems biology and engages with issues related to the circumstances under which physicists look at biological problems. We use oral history as one of the methodological tools to gather the empirical material, conducting interviews with physicists working in systems biology. The interviews were conducted at several institutions in Brazil, Germany, Israel and the U.S. Biological research has been increasingly dependent on computational methods, high-throughput technologies, and multidisciplinary (...) skills. Quantitative scientists are joining biological departments and collaborations between physicists and biologists are particularly vigorous. This state of affairs raises a number of questions, such as: What are the circumstances under which physicists approach biological problems in systems biology? What kind of interdisciplinary challenges must be tackled? The paper suggests that, concerning physicists’ move to work on biological systems, there are common reasons to move, the transition must be understood in terms of degrees, physicists have a rationale for simplifying systems, and distinct conceptions of model and modeling strategies are recurrent. We identified problems regarding linguistic clarity and integration of epistemological aims. We conclude that cultural unconformities within the systems biology community have important consequences to the flow of scientific knowledge. (shrink)

This paper offers a contribution to debates around integrative aspects of systems biology and engages with issues related to the circumstances under which physicists look at biological problems. We use oral history as one of the methodological tools to gather the empirical material, conducting interviews with physicists working in systems biology. The interviews were conducted at several institutions in Brazil, Germany, Israel and the U.S. Biological research has been increasingly dependent on computational methods, high-throughput technologies, and multidisciplinary (...) skills. Quantitative scientists are joining biological departments and collaborations between physicists and biologists are particularly vigorous. This state of affairs raises a number of questions, such as: What are the circumstances under which physicists approach biological problems in systems biology? What kind of interdisciplinary challenges must be tackled? The paper suggests that, concerning physicists’ move to work on biological systems, there are common reasons to move, the transition must be understood in terms of degrees, physicists have a rationale for simplifying systems, and distinct conceptions of model and modeling strategies are recurrent. We identified problems regarding linguistic clarity and integration of epistemological aims. We conclude that cultural unconformities within the systems biology community have important consequences to the flow of scientific knowledge. (shrink)

Why did nineteenth‐century German historians and physicists habitually warn against vices that they believed philosophers in particular embodied: speculation, absence of common sense, and excessive systematizing? Drawing on a rich array of sources, this article interprets this vice‐charging as a rhetorical practice aimed at delineating empirical research from Naturphilosophie and Geschichtsphilosophie as practiced in the heyday of German Idealism. The strawman of “the philosopher” as invoked by historians and physicists served as a negative model for strongly empiricist scholars (...) committed to virtues like precision, thoroughness, and conscientiousness. In their historical narratives, historians and physicists consistently depicted philosophy either as a relic from the past or as a phase that they had virtuously left behind. This boundary work was central to the self‐positioning of both history and physics, which makes clear that the persona of the philosopher mattered not only to philosophers but also to scholars in adjacent disciplines. (shrink)

This paper offers a contribution to debates around integrative aspects of systems biology and engages with issues related to the circumstances under which physicists look at biological problems. We use oral history as one of the methodological tools to gather the empirical material, conducting interviews with physicists working in systems biology. The interviews were conducted at several institutions in Brazil, Germany, Israel and the U.S. Biological research has been increasingly dependent on computational methods, high-throughput technologies, and multidisciplinary (...) skills. Quantitative scientists are joining biological departments and collaborations between physicists and biologists are particularly vigorous. This state of affairs raises a number of questions, such as: What are the circumstances under which physicists approach biological problems in systems biology? What kind of interdisciplinary challenges must be tackled? The paper suggests that, concerning physicists’ move to work on biological systems, there are common reasons to move, the transition must be understood in terms of degrees, physicists have a rationale for simplifying systems, and distinct conceptions of model and modeling strategies are recurrent. We identified problems regarding linguistic clarity and integration of epistemological aims. We conclude that cultural unconformities within the systems biology community have important consequences to the flow of scientific knowledge. (shrink)

The epic true story of how a global team of physics luminaries-Einstein, Curie, Schrödinger, and more-toppled the Newtonian universe amid the turmoil of two World Wars.

The nature of matter and the idea of indivisible parts has fascinated philosophers, historians, scientists and physicists from antiquity to the present day. This collection covers the richness of its history, starting with how the Ancient Greeks came to assume the existence of atoms and concluding with contemporary metaphysical debates about structure, time and reality. Focusing on important moments in the history of human thought when the debate about atomism was particularly flourishing and transformative for the scientific (...) and philosophical spirit of the time, this collection covers: - The discovery of atomism in ancient philosophy - Ancient non-Western, Arabic and late Medieval thought - The Renaissance, when along with the re-discovery of ancient thought, atomism became once again an important doctrine to be fully debated - Logical atomism in early analytic philosophy, with Russell and Wittgenstein - Atomism in Liberalism and Marxism - Atomism and the philosophy of time - Atomism in contemporary metaphysics - Atomism and the sciences Featuring 28 chapters by leading and younger scholars, this valuable collection reveals the development of one of philosophy's central doctrines across 2,500 years and within a broad range of philosophical traditions. (shrink)

This book brings together a broad spectrum of authors, both from inside and from outside Cuba, who describe the development of Cuba's scientific system from the colonial period to the present. It is a unique documentation of the self-organizing power of a local scientific community engaged in scientific research on an international level. The first part includes several contributions that reconstruct the different stages of the history of physics in Cuba, from its beginnings in the late colonial era to (...) the present. The second part comprises testimonies of Cuban physicists, who offer lively insights from the perspective of the actors themselves. The third part presents a series of testimonies by foreign physicists, some of whom were directly involved in developing Cuban physics, in particular in the development of teaching and research activities in the early years of the Escuela de Física. The fourth part of the volume deals with some of the issues surrounding the publishing of scientific research in Cuba. Cuba's recent history and current situation are very controversial issues. Little is known about the development and status of higher education and scientific research on the island. However, Cuba has one of the highest proportions in the world of people with a university degree or doctorate and is known for its highly developed medical system. This book focuses on a comprehensive overview of the history of the development of one specific scientific discipline: physics in Cuba. It traces the evolution of an advanced research system in a developing country and shows a striking capacity to link the development of modern research with the concrete needs of the country and its population. A little known aspect is the active participation of several "western" physicists and technicians during the 1960s, the role of summer schools, organized by French, Italian, and other western physicists, as well as the active collaboration with European universities.<. (shrink)

The development of atomic bombs under the auspices of the U.S. Army's Manhattan Project during World War II is considered to be the outstanding news story of the twentieth century. In this book, a physicist and expert on the history of the Project presents a comprehensive overview of this momentous achievement. The first three chapters cover the history of nuclear physics from the discovery of radioactivity to the discovery of fission, and would be ideal for instructors of a (...) sophomore-level "Modern Physics" course. Student-level exercises at the ends of the chapters are accompanied by answers. Chapter 7 covers the physics of first-generation fission weapons at a similar level, again accompanied by exercises and answers. For the interested layman and for non-science students and instructors, the book includes extensive qualitative material on the history, organization, implementation, and results of the Manhattan Project and the Hiroshima and Nagasaki bombing missions. The reader also learns about the legacy of the Project as reflected in the current world stockpiles of nuclear weapons. This second edition contains important revisions and additions, including a new chapter on the German atomic bomb program and new sections on British and Canadian contributions to the Manhattan project and on feed materials. Several other sections have been expanded; reader feedback has been helpful in introducing minor corrections and improved explanations; and, last but not least, the second edition includes a detailed index. (shrink)

Accounts of how the concept of temperature has evolved typically cast the story as ancillary to the history of the thermometer or the history of the concept of heat. But then, because the history of temperature is not treated as a subject in its own right, modern associations inadvertently get read back into the historical record. This essay attempts to lay down an authoritative record not of what people in the past thought about what we call ‘temperature’ (...) but of what they thought about what they called ‘temperature’ (or one of its cognates), from medieval times to today. I find that invention of the thermometer had little impact on the concept of temperature. Much more significant were Fahrenheit’s invention of a reliable instrument and William Thomson’s effort to make a degree of temperature a unit of measure. Overlapping definitions of temperature then emerged in the late nineteenth century, and twentieth-century scientific developments forced physicists to reconsider temperature’s conceptual boundaries. It turns out that the concept of temperature has evolved through stages that correspond to four increasingly sophisticated types of measurement. Its maturation and its maturity shed light on the philosophy of conceptual change. (shrink)

In this re-appraisal of Philosophy and the Physicists, I want to challenge C. D. Broad’s account of what Stebbing accomplishes and show that, alongside a t...

Among the many tensions and oppositions in play in the early twentieth century, one—the divide between classical and modern physics—has retrospectively overshadowed our understandings of the period. This paper investigates when and why physicists first started using the term ‘classical’ to describe their discipline. Beginning with Boltzmann and ending with the 1911 Solvay Congress, on a broad scale this story constitutes a powerful instance of the circulation of a rich cultural image. First deployed in understandings of literature, music, art (...) and schooling, the concept of the classical within the physics community came to be invested with a highly specific meaning, which in turn formed the basis for the widespread popularization of a new physical worldview after World War I. But on a finer scale, displaying the diverse, contrasting and controversial concepts of classical theory invoked by different physicists around 1900, and charting the emergence of our present understanding with the rise of relativity and quantum theory, reveals significant tussles over the meaning and value of different intellectual approaches. Here I use these tensions to investigate the interrelations between research programs and the broader, framing concepts with which physicists describe their experience of disciplinary change.Keywords: Energetics; Statistical mechanics; Relativity; Quantum theory; Classical physics; Ludwig Boltzmann. (shrink)

Mandelstam’s criticism of the Rayleigh theory of the blue color of the sky (1907) and his polemic with M. Planck (1907–1908) did not become notable events in the history of physics. However, the method of their coverage in the Soviet and in the post-Soviet physics literature is remarkable. Most of Soviet physicists and historians of physics supported Mandelstam's point of view in his criticism of both Raleigh and Planck. The situation changed only at the beginning of the 21st (...) century: in the Russian literature the publications appeared emphasizing that in the Raleigh–Mandelstam and Planck–Mandelstam controversies Mandelstam was not right, Raleigh and Planck were closer to the truth. Which presumptions of this trend can be noted? This was patriotism of the scientific school peculiar to Mandelstam’s graduate students and the former graduate students, the patriotism connected with solidarity which helped Mandelstam’s community to survive in the Soviet totalitarian regime and in the totalitarian organization of science. This was also progressionism which was popular among academics and among men in the street. The phenomenon of common knowledge, mutual knowledge among the members of a scientific community should be taken under consideration. Common knowledge is connected with the non-thematized anonymous inclusion of the ideological terminology into scientific discourse. (shrink)

Full of drama, dedication, and humor, this book narrates the author's often frustrating experiences working as an experimental physicist in Cuba after the disintegration of the so-called socialist block. Lacking finance and infrastructure, faced with makeshift equipment, unpredictable supplies, and unreliable IT, Altshuler tells how he and his students overcame numerous challenges to make novel and interesting contributions to several fields of science. Along the way, he explains the science - from studies of ant colonies to superconductivity - either qualitatively (...) or quantitatively, but always at a level fully understandable to an undergraduate student of natural sciences or engineering. An even wider audience, however, may skip the technical sections without missing the essence. With numerous anecdotes, photographs and the author's own delightful cartoons, the book tells a remarkable, and often amusing story of how successful science can be performed against all odds. (shrink)

Blurb & Contents Readings from Physics Today With over 300 photographs and illustrations, this volume is a valuable library reference, a useful supplementary text for a wide range of courses, and stimulating leisure reading for physicists and non- physicists alike.

This slight volume contains three short essays by the author: “The Idea of Nature In Contemporary Physics”, “Atomic Physics and Causal Law”, and “Classical Education”. Much more than half of the book is given over to a selection of brief readings from Kepler, Galileo, Newton, Huygens, D’Alembert, De la Mettrie, Ostwald, Hertz, and a short historical review by de Broglie of the evolution of quantum mechanics. These readings are meant to illustrate the author’s overall theme which appears to be this: (...) the development of modern science has been marked by a progressive change in the concept of nature. The mediaevals regarded Nature as God’s handiwork: “it would have been thought senseless to ask questions about the material world without reference to God”, Between Galileo and Newton a quite new outlook arose which encouraged the belief that an accurate and exhaustive account of Nature could be made in mathematical terms which made reference only to matter and motion. This was the mechanist view of Nature, which led logically to materialism. But modern physics has shown the inadequacy of this view. “The object of research is no longer nature itself, but man’s investigation of nature”. “Nature itself cannot be known”, only “man’s relationship with nature”. The uncertainty principle proves that an “objective” picture of Nature is impossible. The observer and the observed system cannot be clearly separated, and thus we must give up the “Cartesian” distinction between a world of “objective processes in space and time and a mind in which these processes are mirrored”. Thus, we no longer regard “nature” as God’s handiwork nor as an objective space-time-matter manifold but either as the “footprint of man” upon an unknowable substratum, or else as “the transparent clarity of a mathematics that no longer describes the behaviour of elementary particles but only our knowledge of this behaviour”. There is no “philosophy of nature” properly speaking; our knowledge of “nature”, such as it is, is derived from a philosophical consideration of science. (shrink)

The author, who shared the 1959 Nobel Prize in Physics with Owen Chamberlain, offers impressions and recollections of the development of modern physics. Rather than a chronological approach, Segre emphasizes interesting, complex personalities who often appear only in footnotes. Readers will find that this book adds considerably to their understanding of science and includes compelling topics of current interest.

Professor Bridgman is a physicist of distinction who has contributed to the philosophy of physics. Dissatisfied with the traditional obscurities and irrationalities of certain branches of his subject, he evolved for himself a logic of modern physics, and focussed his attention on that aspect of scientific method which he called “operational”. His name has been associated with “operational research” and “operational definition” ever since. The present volume, a second and enlarged edition, is a collection of non-technical writings that illustrate what (...) the operational point of view can lead to. The papers are of varying length, some of them quite slight, and the quality is likewise variable. It seems to me the book would improve with pruning, and editing. Besides some irksome mannerisms, there are crudities of style that one would wish to see removed. (shrink)

This is the second in a series of three papers that charts the history of the Lenz–Ising model (commonly called just the Ising model in the physics literature) in considerable detail, from its invention in the early 1920s to its recognition as an important tool in the study of phase transitions by the late 1960s. By focusing on the development in physicists’ perception of the model’s ability to yield physical insight—in contrast to the more technical perspective in previous (...) historical accounts, for example, Brush (Rev Modern Phys 39: 883–893, 1967) and Hoddeson et al. (Out of the Crystal Maze. Chapters from the History of Solid-State Physics. Oxford University Press, New York, pp. 489–616, 1992)—the series aims to cover and explain in depth why this model went from relative obscurity to a prominent position in modern physics, and to examine the consequences of this change. In the present paper, which is self-contained, I deal with the development from the early 1950s to the 1960s and document that this period witnessed a major change in the perception of the model: In the 1950s it was not in the cards that the model was to become a pivotal tool of theoretical physics in the following decade. In fact, I show, based upon recollections and research papers, that many of the physicists in the 1950s interested in understanding phase transitions saw the model as irrelevant for this endeavor because it oversimplifies the nature of the microscopic constituents of the physical systems exhibiting phase transitions. However, one group, Cyril Domb’s in London, held a more positive view during this decade. To bring out the basis for their view, I analyze in detail their motivation and work. In the last part of the paper I document that the model was seen as much more physically relevant in the early 1960s and examine the development that led to this change in perception. I argue that the main factor behind the change was the realization of the surprising and striking agreement between aspects of the model, notably its critical behavior, and empirical features of the physical phenomena. (shrink)

This book focuses on the gradual formation of the concept of ‘light quanta’ or ‘photons’, as they have usually been called in English since 1926. The great number of synonyms that have been used by physicists to denote this concept indicates that there are many different mental models of what ‘light quanta’ are: simply finite, ‘quantized packages of energy’ or ‘bullets of light’? ‘Atoms of light’ or ‘molecules of light’? ‘Light corpuscles’ or ‘quantized waves’? Singularities of the field or (...) spatially extended structures able to interfere? ‘Photons’ in G.N. Lewis’s sense, or as defined by QED, i.e. virtual exchange particles transmitting the electromagnetic force? The term ‘light quantum’ made its first appearance in Albert Einstein’s 1905 paper on a “heuristic point of view” to cope with the photoelectric effect and other forms of interaction of light and matter, but the mental model associated with it has a rich history both before and after 1905. Some of its semantic layers go as far back as Newton and Kepler, some are only fully expressed several decades later, while others initially increased in importance then diminished and finally vanished. In conjunction with these various terms, several mental models of light quanta were developed—six of them are explored more closely in this book. It discusses two historiographic approaches to the problem of concept formation: the author’s own model of conceptual development as a series of semantic accretions and Mark Turner’s model of ‘conceptual blending’. Both of these models are shown to be useful and should be explored further. This is the first historiographically sophisticated history of the fully fledged concept and all of its twelve semantic layers. It systematically combines the history of science with the history of terms and a philosophically inspired history of ideas in conjunction with insights from cognitive science. (shrink)

This paper keeps pace with my personal history as a researcher: starting from the eagerness for knowledge of the nuclear physics PhD student I once was, continuing with my search for social relevance in policy-preparatory research I subsequently performed as a sustainability scholar, it finally leads to the topics of interest for the hybrid philosophy-sociology researcher I am today. Following these traces, I first of all rethink my life as a physicist in terms of science as a necessarily situated (...) and engaged practice before laying bare the baleful scientisation of politics in sustainability discourse. Finally, I sketch the contours of a genuine politics of sustainability by repositioning the enigma of scientific production at the heart of its practice. (shrink)

A Brief History of Time: From the Big Bang to Black Holes is a popular-science book on cosmology (the study of the origin and evolution of the universe) by British physicist Stephen Hawking. It was first published in 1988. Hawking wrote the book for readers who have no prior knowledge of the universe and people who are interested in learning.

Edmund T. Whittaker’s second edition of his A History of the Theories of Aether and Electricity is famous for his treatment of Einstein as an almost irrelevant character in the emergence of what he called “the relativity theory of Poincaré and Lorentz.” Historians of science have given a number of explanations, which include Whittaker’s scientific conservatism as an old classical physicist, his commitment to the ether, the pre-eminent role he attributed to mathematics over physics, and foundational philosophical disagreements, to (...) name a few. And in the background, often more implicit than forthright, the accusation of antisemitism looms over Whittaker. In this paper I intend to shed new light on this controversy by taking into consideration the abundant correspondence between Whittaker and his son preserved in the archives of the Fisher Library, University of Toronto. With it, we will get a more complex and personal view of the context in which his attempt at dethroning Einstein took place. Together with the abovementioned reasons, this correspondence shows that the problematic status quo of general relativity in the early 1950s, a period that has been described as the low-mark of general relativity, was very influential in the historical treatment he gave to Einstein. This is an aspect hardly mentioned in the historical work on this controversy and, from this correspondence, it appears to be central to understanding Whittaker at the time of drafting the new History. His possible antisemitic bias will also be addressed, though with the insufficient information on this subject the matter cannot be settled. (shrink)