The Discovery of X-Rays: a Probable Case of Second Order Observation

2018 ◽  
Vol 19 (4) ◽  
pp. 403
Author(s):  
Marco Aurélio Clemente Gonçalves ◽  
Mariele Regina Pinheiro Gonçalves ◽  
Pablo Eduardo Ortiz
Keyword(s):  
History Of Science ◽  
Second Order ◽  
Point Of View ◽  
X Rays ◽  
Historical Reconstruction ◽  
X Ray ◽  
Probable Case ◽  
The Status ◽  
History Of

The discovery of x-rays, one of the most beautiful experiments ever carried out, generates numerous controversies and these, in turn, can trigger a series of counterproductive information regarding not only the History of Science but also the teaching  activity. The aim of this article is to resolve these controversies concerning what ocurred and highlight the important role of the German physicist Wilhelm Conrad Röntgen, highlighting not only his genius but, especially in this case in particular, his condition of second-order observer. It is not uncommon to find information in various media refering to this discovery under the claim that it was the result of a fortuitous event, and this denotes a profound lack of knowledge about the facts or a disrespect for the renowned discoverer. Such allegations about the event depreciate the extraordinary discovery that impacts humanity, from the deed  to the present. Thus, through a brief historical reconstruction, it was tried to present here what had happened judiciously. With this respect, the brilliant scientist is given the status of a second-rate observer, from the philosophical point of view. This condition resonates with the diachronic aspect of the History of Science, according to the perspective presented here, and it is also supported by the time taken by the discoverer from the beginning of his research until the end of it. Keywords: X-Ray. Second-Order Observer. History of Science. ResumoO descobrimento dos raios-x, um dos mais belos experimentos já realizados, gera inúmeras controvérsias e essas, por sua vez, podem desencadear uma série de informações contraproducentes no tangente não só a História da Ciência como também à atividade de ensino. O presente artigo tem como objetivo dirimir tais polêmicas com respeito ao ocorrido e destacar o importante papel do físico alemão Wilhelm Conrad Röntgen, destacando não só sua genialidade, mas sobretudo, neste caso em particular, a sua condição de observador de segunda ordem. Não é raro encontrar em diversos meios de comunicação informações com respeito a referida descoberta sob a alegação de que a mesma fora fruto de um caso fortuito e isso denota profundo desconhecimento sobre os fatos, ou então, desrespeito com o renomado descobridor. Tais alegações sobre o sucedido depreciam a descoberta extraordinária que impacta a humanidade, desde o feito até a atualidade. Assim, através de breve reconstrução histórica, buscou-se aqui apresentar o ocorrido criteriosamente. Com este respeito passa-se a atribuir ao brilhante cientista a condição de observador de segunda ordem, do ponto de vista filosófico. Tal condição encontra ressonância no aspecto diacrônico da História da Ciência, segundo a perspectiva aqui apresentada e está amparada, também, pelo tempo empreendido pelo descobridor desde o início de sua pesquisa até a finalização da mesma. Palavras-chave: Raios-x. Observador de Segunda Ordem. História da Ciência.

scholarly journals The Wolter Family: Ways and Contexts of Emigration to Lithuania

Lituanistica ◽  
2020 ◽  
Vol 65 (4) ◽  
Author(s):  
Aurelijus Gieda
Keyword(s):  
Academic Career ◽  
Academic Work ◽  
Point Of View ◽  
Left Behind ◽  
The Status ◽  
History Of ◽  
New Material ◽  
Academy Of Sciences ◽  
First Time

It has been emphasised on several occasions that Professor Eduard Wolter was a prominent figure and a broad-profile humanitarian in the history of Lithuanian humanities, who for many decades was actively interested in Lithuanian studies, among other things. The revolutionary changes in Russia divided Wolter’s academic career into two unequal parts: nearly forty years of academic work in Tsarist Russia and thirteen years in Kaunas. Bearing in mind the status of academic Lithuanian studies at the beginning of the twentieth century, his was an unprecedented case in Lithuania until 1940. We can claim that before 1940, no other Lithuanian humanitarian had such a long academic career of several decades devoted to Lithuanian studies. However, we still do not have an academic biography of Wolter, and Stasė Bušmienė’s work Eduardas Volteris, published almost 50 years ago, remains the most comprehensive publication in the field. Because of these circumstances, we must search for new problematic aspects, updated interpretations, and new material-based approaches. The article analyses the context of the revolutionary changes in Russia, the role of Augustinas Voldemaras in the history of the Wolters’ emigration, and Prof. Wolter’s recurrent concern about the academic possessions he had left in St. Petersburg when he was already in Lithuania. This article seeks new solutions: the emigration of the Wolter family to Lithuania is viewed as a potentially crucial knot in the professor’s biography. It allows understanding and linking two seemingly very different stages in his biography (Tsarist Russia and independent Lithuania). Lithuanian research interests and the related circle of like-minded people that had evolved in the course of many decades form a consistent deep-rooted epicentre of Prof. Wolter’s biography. The research method chosen imparts inner integrity to the biography of Prof. Wolter and an opportunity to look into the path of this scholar, who was also a member of the Russian Academy of Sciences, in the long term perspective. This text develops and substantiates the thesis that scholars’ emigration from Bolshevik Russia took place under dire circumstances: they had to leave not only their homes but also their libraries behind, their manuscripts and much of the material accumulated over many decades of academic work. Also, from the point of view of a collective biography, the context of the loss of the old University of St. Petersburg after the Bolshevik takeover in Russia is shown. While in Lithuania, Prof. Wolter made great efforts to recover the manuscripts, the library, and the collections he had left behind in St. Petersburg. This moment justifies the emigration of the Wolter family to Lithuania as a relevant key to the whole biography of Prof. Wolter. For the first time in historiography, the article gives a detailed analysis of Augustinas Voldemaras’ 53 letters to Alexandra Wolter (translated and published by Gediminas Rudis). The letters offer an interesting and characteristic description of the actual circumstances of the emigration of the Wolter family to Lithuania. This correspondence reveals a special connection between Voldemaras and the Wolter family. Voldemaras, who had lived in the Wolters’ house in St. Petersburg for over a decade, became a true family member, and their communication in the process of the emigration of the Wolter family was best described as close familial relations. In this way, the article sheds light on the role of Prof. Voldemaras in the relocation of the Wolter family to Lithuania, which did not find reflection either in Wolter’s biography or in general historiography.

Synchronization from the point of view of the history of science

1996 ◽  
Vol 35 (4) ◽  
pp. 711-720
Author(s):  
Giampiero Bozzolato
Keyword(s):  
Complex System ◽  
History Of Science ◽  
Point Of View ◽  
The Future ◽  
Spatial Dimensions ◽  
History Of ◽  
The Individual ◽  
Mode Of Production

Time as defined in the context of individual lives cannot be measured or compared; it therefore needs to be particularized through processes of synchronization and desynchronization. Subjectivity is a notion that supports temporal objectivity only if the mode of production is not based on a concept of exchange but on simple appropriation. Time as identified with the life of the individual remains incommensurable. But the history of growth in the spatial dimensions of trade and the reduction in the amount of time needed to effect commercial exchanges is integral to and consequent on the development of science as a method of forecasting and planning. As trade grows, so does the role of science, to the point where it can be seen as pivotal to a society in which the practice of trade is becoming both universal and frequent. The growth of trade was the cause and the effect of both a need to consolidate and develop an increasingly complex system of forecasting, and the requirement for a science with the capacity to make the future less unpredictable.

Rubber as it is Revealed by X-Rays

1929 ◽  
Vol 2 (2) ◽  
pp. 225-236
Author(s):  
George L. Clark
Keyword(s):  
Photographic Film ◽  
X Rays ◽  
X Ray Diffraction ◽  
X Ray ◽  
The Past ◽  
Logical Time ◽  
The Status ◽  
History Of ◽  
Clear Thinking ◽  
Pass Through

Abstract THE beginning of the year of 1929 seems to be a logical time for considering critically the status of knowledge concerning the fundamental structure of rubber. Of all the contributions by various methods to the problem, those which have come as a result of the application of X-ray diffraction methods may be considered the most unique and perhaps most important in the past few years. It was known previous to 1925 that when rubber is strongly stretched it becomes warm, its specific gravity increases and it becomes doubly refracting. The name of J. R. Katz has become renowned throughout the world as a result of the experiment which he performed of causing a fine beam of X-rays to pass through a specimen of stretched rubber behind which was placed a photographic film. This experiment was one of those fortunate accidents which appear frequently in the history of science, but on the other hand, it was the result of clear thinking, rational deduction, and a keen appreciation of the possibilities of application of X-rays to the examination of the ultimate structure of materials.

scholarly journals Compensatory hypertrophy of the untreated ovary after unilateral X-ray sterilisation

1929 ◽  
Vol 105 (734) ◽  
pp. 36-42
Keyword(s):  
Corpus Luteum ◽  
Compensatory Hypertrophy ◽  
Point Of View ◽  
The Other ◽  
X Rays ◽  
X Ray ◽  
Pregnancy And Lactation ◽  
The Right

The technique of sterilising one ovary and allowing the other ovary to remain untreated was originally evolved (Parkes, 8) in order to make possible the accurate study of the rôle of the corpus luteum during pregnancy and lactation. Early in the experiments, however, it was noticed that litters from such unilaterally sterilised mice approximated closely to the normal size. It was later found that, with one ovary sterilised by X-rays, the other ovary undergoes true compensatory hypertrophy, such as has been observed by many authors to follow unilateral or sub-total ovariotomy (1, 4, 5, 6). Since the facts appeared to be of interest from the point of view of the mechanism of compensatory hypertrophy, the experiments on the corpus luteum were so arranged as to permit of collecting the data required to demonstrate hypertrophy of the reamining ovary. II.— Methods and Material . Sterilisation Technique .—The method of carrying out these unilateral irradiations has been described elsewhere (Parkes, 8) and it need only be said here that irradiation took place at 4 weeks old, and that in every case the right ovary was exposed, while the left was protected.

Digital x-ray mapping of nanometer-size supported bimetallic catalysts

1988 ◽  
Vol 46 ◽  
pp. 530-531
Author(s):  
L. T. Germinario
Keyword(s):  
Background Radiation ◽  
Metal Cluster ◽  
Single Element ◽  
Beam Diameter ◽  
X Rays ◽  
X Ray ◽  
Major Interest ◽  
Induced Changes

Understanding the role of metal cluster composition in determining catalytic selectivity and activity is of major interest in heterogeneous catalysis. The electron microscope is well established as a powerful tool for ultrastructural and compositional characterization of support and catalyst. Because the spatial resolution of x-ray microanalysis is defined by the smallest beam diameter into which the required number of electrons can be focused, the dedicated STEM with FEG is the instrument of choice. The main sources of errors in energy dispersive x-ray analysis (EDS) are: (1) beam-induced changes in specimen composition, (2) specimen drift, (3) instrumental factors which produce background radiation, and (4) basic statistical limitations which result in the detection of a finite number of x-ray photons. Digital beam techniques have been described for supported single-element metal clusters with spatial resolutions of about 10 nm. However, the detection of spurious characteristic x-rays away from catalyst particles produced images requiring several image processing steps.

THE ISSUE OF MINORS’S GUARDIANSHIP SENTENCED TO IMPRISONMENT

2020 ◽  
pp. 33-37
Author(s):  
Ирина Викторовна Евстафьева
Keyword(s):  
Juvenile Offenders ◽  
Legal Status ◽  
Careful Consideration ◽  
Point Of View ◽  
Sufficient Detail ◽  
Domestic Legislation ◽  
The Status ◽  
Correct Understanding ◽  
The Given

В статье исследуются вопросы попечительства в отношении несовершеннолетних, отбывающих наказание в виде лишения свободы. Проблема, поднимаемая автором настоящей статьи, многогранна, касается различных аспектов отбывания наказания несовершеннолетними в воспитательных колониях и требует комплексного исследования, способного ответить на определенно значимый вопрос: является ли колония законным представителем находящихся в ней несовершеннолетних со всеми вытекающими из статуса законных представителей последствиями. При этом необходимо обращать внимание на специфику правового статуса лиц, отбывающих наказание в воспитательных колониях, которые, во-первых, являются несовершеннолетними, то есть не обладают дееспособностью в полном объеме и нуждаются в особой заботе, защите и представительстве, а во-вторых, осуждены за совершение тяжкого или особо тяжкого преступления, влекущего изоляцию от общества и определенные ограничения и лишения. Отечественное законодательство достаточно детально регламентирует особенности режима отбывания наказания в виде лишения свободы несовершеннолетними, не определяя при этом статуса воспитательных колоний, кем они являются: воспитателями, попечителями или исключительно учреждениями исполнения наказаний. Между тем правильное понимание значения и роли воспитательной колонии в жизни находящихся в ней несовершеннолетних преступников, по мнению автора, поможет избежать ряда проблем, объективно складывающихся в учреждениях подобного рода. С этой точки зрения предлагаемая тема представляет интерес не только для ученых-теоретиков, но и для практиков - сотрудников соответствующих учреждений. Особо следует подчеркнуть, что исследований по данной тематике в специальной литературе нет. Отдельные исследования, встречающиеся в современной литературе, касаются исключительно общего гражданско-правового статуса несовершеннолетних осужденных. Однако это обстоятельство может свидетельствовать только о новизне данной темы, но никак не об отсутствии самой проблемы. The article analyzes the issues of the status of educational colonies as guardians of minors serving a sentence of imprisonment. In fact, the problem raised by the author of this article is multifaceted, concerns various aspects of the serving of punishment by minors in educational colonies and requires a comprehensive study that can answer, it seems, a definitely significant question: whether the colony is the legal representative of the minors in it with all the consequences arising from the status of legal representatives in the form of duties and responsibilities. At the same time, it seems, it is necessary to pay attention to the specifics of the legal status of citizens serving sentences in educational colonies, who, firstly, are minors, i.e. do not have full legal capacity and need special care, protection and representation, and, secondly, are convicted of committing a serious or particularly serious crime, entailing isolation from society and certain restrictions and deprivation. Domestic legislation regulates in sufficient detail the peculiarities of the regime of serving sentences in the form of deprivation of liberty by minors, without determining the status of educational colonies. Who are they: educators, Trustees or only institutions of execution of punishments. Meanwhile, the correct understanding of the importance and role of the educational colony in the life of juvenile offenders in it, according to the author, will help to avoid a number of problems that objectively develop in institutions of this kind. From this point of view, the proposed topic is of interest not only for theoretical scientists, but for practitioners-employees of relevant institutions. It should be emphasized that there are no studies on this subject in the special literature. However, this circumstance can testify only about novelty of the given subject, but in any way about absence of the problem. It seems that the relevance and importance of a problem is not always measured by the number of studies devoted to it. Sometimes these its traits are manifest only under particularly careful consideration.

Can an Adulteress Save Jesus? the Pericope Adulterae, Feminist Interpretation, and the Limits of Narrative Agency

2018 ◽  
Author(s):  
Jennifer Knust
Keyword(s):  
Point Of View ◽  
Feminist Interpretation ◽  
Narrative Agency ◽  
The Status ◽  
The Face ◽  
History Of

The pericope adulterae (John 7:53–8:11) is often interpreted as an inherently feminist story, one that validates women’s humanity in the face of a patriarchal order determined to reduce sexual sinners and women more generally to the status of object. Reading this story within a framework of queer narratology, however, leads to a different point of view, one that challenges the consequences of seeking rescue from a god and a text that are both quite willing to forge male homosocial bonds at a woman’s expense. As the history of this story also shows, texts and their meanings remain unsettled and therefore open to further unpredictable and contingent elaboration. Pondering my own feminist commitments, I attempt to imagine a world and a story where a woman is a person and Jesus is in need of rescue. Perhaps such a world is possible. Or perhaps it is not.

History and Theory

2018 ◽  
Author(s):  
Chris Lorenz
Keyword(s):  
Philosophy Of History ◽  
Point Of View ◽  
History Writing ◽  
True Nature ◽  
The Status ◽  
Current Return ◽  
Theoretical Reflection ◽  
Three Phases

This introductory chapter assesses the role of theory in history and traces the developments in the discipline of history. Theoretical reflection about the ‘true nature’ of history fulfils three interrelated practical functions. First, theory legitimizes a specific historical practice—a specific way of ‘doing history’—as the best one from an epistemological and a methodological point of view. Second, theory sketches a specific programme of doing history. Third, theoretical reflections demarcate a specific way of ‘doing history’ from other ways of ‘doing history’, which are excluded or degraded. The chapter then considers three phases of theoretical changes from analytical to narrative philosophy of history, and then on to ‘history from below’ and the ‘presence’ of history, ultimately leading to the current return of fundamental ontological and normative questions concerning the status of history and history-writing.

scholarly journals Investigating the Magnetospheres of Rapidly Rotating B-type Stars

2016 ◽  
Vol 12 (S329) ◽  
pp. 369-372
Author(s):  
C. L. Fletcher ◽  
V. Petit ◽  
Y. Nazé ◽  
G. A. Wade ◽  
R. H. Townsend ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Centrifugal Force ◽  
Point Of View ◽  
Closed Field ◽  
Theoretical Point ◽  
X Rays ◽  
Rapid Rotation ◽  
X Ray ◽  
Surface Magnetic Field

AbstractRecent spectropolarimetric surveys of bright, hot stars have found that ~10% of OB-type stars contain strong (mostly dipolar) surface magnetic fields (~kG). The prominent paradigm describing the interaction between the stellar winds and the surface magnetic field is the magnetically confined wind shock (MCWS) model. In this model, the stellar wind plasma is forced to move along the closed field loops of the magnetic field, colliding at the magnetic equator, and creating a shock. As the shocked material cools radiatively it will emit X-rays. Therefore, X-ray spectroscopy is a key tool in detecting and characterizing the hot wind material confined by the magnetic fields of these stars. Some B-type stars are found to have very short rotational periods. The effects of the rapid rotation on the X-ray production within the magnetosphere have yet to be explored in detail. The added centrifugal force due to rapid rotation is predicted to cause faster wind outflows along the field lines, leading to higher shock temperatures and harder X-rays. However, this is not observed in all rapidly rotating magnetic B-type stars. In order to address this from a theoretical point of view, we use the X-ray Analytical Dynamical Magnetosphere (XADM) model, originally developed for slow rotators, with an implementation of new rapid rotational physics. Using X-ray spectroscopy from ESA’s XMM-Newton space telescope, we observed 5 rapidly rotating B-types stars to add to the previous list of observations. Comparing the observed X-ray luminosity and hardness ratio to that predicted by the XADM allows us to determine the role the added centrifugal force plays in the magnetospheric X-ray emission of these stars.

Reflections on the Status and Direction of Psychology: An External Historical Perspective

2013 ◽  
Vol 44 (2) ◽  
pp. 244-261 ◽  
Author(s):  
Amedeo Giorgi
Keyword(s):  
Historical Perspective ◽  
Phenomenological Approach ◽  
Natural Sciences ◽  
Gestalt Theory ◽  
The Everyday ◽  
The Status ◽  
History Of ◽  
A Minor ◽  
Aron Gurwitsch

Abstract Whenever one reads internal histories of psychology what is covered is the establishment of a lab by Wundt in 1879 as the initiating act and then the breakaway movements of the 20th Century are discussed: Behaviorism, Gestalt Theory, Psychoanalysis, and most recently the Cognitive revival. However, Aron Gurwitsch described a perspective noted by Cassirer and first developed by Malebranche, which dates the founding of psychology at the same time as that of physics in the 17th Century. This external perspective shows the dependency of psychology upon the concepts, methods and procedures of physics and the natural sciences in general up until the present time. Gurwitsch argues that this approach has blocked the growth of psychology and has assured its status as a minor science. He argued that the everyday Lifeworld achievements of subjectivity are the true subject matter of psychology and that a phenomenological approach to subjectivity could give psychology the authenticity it has been forever seeking but never finding as a naturalistic science. Some clarifying thoughts concerning this phenomenologically grounded psychology are offered, especially the role of desire. The assumption of an external perspective toward the history of psychology fostered the insights about psychology’s scientific role.

Sign in / Sign up

Export Citation Format

Share Document