A fully quantum-mechanical description of the spontaneous emission from an excited two-level atom placed in front of a two-slit interferometer is given. Global modes of the electromagnetic field in a two slit system are derived within the Kirchhoff-Huygens diffraction approximation, serving as a base for the field quantization. The standard Fermi's golden rule, supplemented by a factor coming from the nontrivial mode structure caused by the presence of the two-slit interferometer, is used to show that interference results from the position-dependent (...) coupling between the atom and different field modes of the system. (shrink)

Problems connected with the questions of: being-nonbeing, existence, modes of existence and alike, belong to the basic and most important in metaphysics. The article discusses some answers to the aforementioned issues, as proposed by the ancient philosophers, St Thomas Aquinas, R. Ingarden and A.N. Whitehead. In the Appendix some remarks are made on Aristotle’s and S. Thomas’ theory of act and potency.

Over the first decades of the twentieth century, the fragmentary remains of a huge prehistoric ungulate were unearthed in scientific expeditions in India, Turkestan and Mongolia. Following channels of formal and informal empire, these were transported to collections in Britain, Russia and the United States. While striking and of immense size, the bones proved extremely difficult to interpret. Alternately naming the creature Paraceratherium, Baluchitherium and Indricotherium, paleontologists Clive Forster-Cooper, Alexei Borissiak and Henry Fairfield Osborn struggled over the reconstruction of this (...) gigantic fossil mammal. However, despite these problems, shared work on the creature served as a focus for collaboration and exchange rather than rivalry between these three scientific communities. Not only did the initial interpretation and analysis depend on pre-existing connections between British and American paleontological institutions, but the need for comparative material, recognition and contacts brought British and American scholars into communication and exchange with their counterparts in the Soviet Union. This article examines these processes. It first uses these excavations as a comparative case-study of different manifestations of colonial science in this period, examining how scholars in the Britain, the Russian Empire and the United States used formal and informal colonial links to Asia to pursue new research. It then moves to examine how the common problem of reconstructing this giant animal drew metropolitan scientific communities together, at least for a time. The construction of the Baluchitherium and Indricotherium illustrates the drives to expand research both imperially and internationally in the early-twentieth century, but also the continual problems in resources, institutionalization, transport and communication that could run up against scientific work. (shrink)

Recenzowana monografia naukowa dotyczy wybranych, niezwykle ważnych kwestii społecznych i etycznych, związanych z poszczególnymi etapami życia ludzkiego: jego początkiem, trwaniem i śmiercią. Składa się z dziewięciu artykułów, które łącznie tworzą szeroką panoramę współczesnych problemów bioetycznych. […] Jest przykładem ich dobrego diagnozowania, aktualizowania refleksji nad nimi i proponowania konkretnych rozwiązań, które odwołują się – co bardzo cenne – do rodzimych przykładów. […] Adresatami publikacji mogą być zarówno osoby profesjonalnie związane z szeroko rozumianą służbą zdrowia, studenci kierunków medycznych, jak i pacjenci oraz (...) ich rodziny, a także osoby zawodowo organizujące wsparcie w trudnych sytuacjach. Publikacja zainteresuje także osoby, które poszukują refleksji nad społecznie ważnymi kwestiami bioetycznymi, ukazanymi w perspektywie personalistycznej. Z recenzji ks. dr. hab. Zbigniewa Wanata, prof. UMK Monografia zawiera szereg interesujących tekstów analizujących dylematy moralne związane z początkiem i końcem ludzkiego życia. Poruszane zagadnienia są ważne i aktualne. W części pierwszej znajdują się opracowania dotyczące kwestii prenatalnych i okołoporodowych, w części drugiej – kwestii terminalnych, a na końcu tekst zwieńczający, dotyczący pojęcia sumienia […] Szczególnie cenne wydają się teksty prezentujące obszerne wyniki badań własnych (np. opieki nad dziećmi z zespołem Downa) i funkcjonowanie niedawno powstałych instytucji (jak hospicja perinatalne) albo opisujące proponowane procedury postępowania w praktyce (np. w stosunku do osób umierających). Inne teksty, nawet jeśli dotyczą zagadnień znanych (np. diagnostyki prenatalnej lub opieki nad ciężarnymi niepełnosprawnymi), omawiają je w sposób porządkujący dotychczasową wiedzę. Powyższe sprawia, że monografię można uznać za dzieło oryginalne. […] Wśród Autorów poszczególnych rozdziałów znajdują się osoby rozpoznawalne w środowisku medycznym i bioetycznym, co sprawia, że publikacja powinna cieszyć się zainteresowaniem w tych kręgach, a sformułowane w niej postulaty mogą mieć wartość aplikacyjną. Z recenzji dr. hab. med. Jakuba Pawlikowskiego, prof. UKSW. (shrink)

The Peking Man fossils discovered at Zhoukoudian in north-east China in the 1920s and 1930s were some of the most extensive palaeoanthropological finds of the twentieth century. This article examines their publicization and discussion in Britain, where they were engaged with by some of the world's leading authorities in human evolution, and a media and public highly interested in human-origins research. This international link – simultaneously promoted by scientists in China and in Britain itself – reflected wider debates on international (...) networks; the role of science in the modern world; and changing definitions of race, progress and human nature. This article illustrates how human-origins research was an important means of binding these areas together and presenting scientific work as simultaneously authoritative and credible, but also evoking mystery and adventurousness. Examining this illustrates important features of contemporary views of both science and human development, showing not only the complexities of contemporary regard for the international and public dynamics of scientific research, but wider concerns over human nature, which oscillated between optimistic notions of unity and progress and pessimistic ones of essential differences and misdirected development. (shrink)

Sixty years that have passed since the Warsaw Uprising are meaningful on the life scale of human generations. The Uprising, planned for 2 or 3 days, lasted in fact for 63 days. That fact astounded the military experts and was even noticed by the German high command, which has to be mainly ascribed to the exceptional tension of patriotism of the soldiers and the population.The Germans suffered especially great losses on the average around 1,900 weekly, almost twice as many as (...) during the highest intensity of fighting in 1944/45. On our side the losses were estimated at 18,000 dead and about 6,500–7,000 wounded insurgents. However, the Warsaw Uprising and the whole nation counted around 150,000 dead among the civilians.During the two months of the uprising 25% of the pre-war buildings in Warsaw were destroyed, mainly due to the barbarian practice of burning the whole streets. Against the conditions of the capitulation agreement just signed, the majority of historical monuments were burned down.In Warsaw, the tradition of sacrifices and solidarity in action, bravery and the deep attachment to liberty, manifested in September 1939, was alive and brought results all the time of war through the acts of the patriotic resistance organizations. The leaders of the Warsaw Uprising belonged to the resistance fighters before World War I and during it. The battle for independence was their curriculum vitae, and the majority of the uprising participants, the youth, was educated in the independent Polish Republic, in respect for patriotic traditions of independence fights and insurrections.Jerzy Kirchmajer believes that the Warsaw Uprising was an error, as it did not suit the Soviets; Jan Ciechanowski from London—that it was against the plans of the British ally. It is said sometimes that the Uprising started without calculating the possibility of a helping hand.Faith played a major role during the Uprising. The clergy helped the community every way they could. (shrink)

Originally presented as the author's thesis (doctoral)--Universite catholique de Louvain, 1990.

This essay examines the Mission paléontologique française of the 1920s, a series of scientific expeditions into the Ordos Desert in Inner Mongolia in which a team of Jesuit scholar-scientists worked with local collaborators to provide material for the Muséum d’Histoire Naturelle in Paris. The case study shows that the global and colonial expansion of Western science in the early twentieth century provided space for traditional scientific institutions, such as universalizing metropolitan collections and clerical scholarly networks, to extend their research projects. (...) The linking of approaches, agendas, and geographic regions was facilitated by the concepts and practices of the deep-time sciences of geology, paleontology, and human prehistory. These were based on the interchange of expertise, common projects of unveiling the development of life, and the alignment of different regions and specimens. Moreover, the expeditions did not just conduct research based around global movement and transmission. They also conceptualized the ancient development of life in terms of movement, migration, and exchange. The act of forming research networks that linked Asia and Europe also led scientists to conceive of these regions as bound by deep natural processes. Circulation and transfer became important actors’ categories used to understand the origins and history of life. (shrink)

ABSTRACT This essay examines a dispute between the French and German anthropological communities in the aftermath of the Franco‐Prussian War. While the debate ostensibly revolved around the ethnological classification of the Prussian population presented in Jean Louis Armand de Quatrefages's La race prussienne, this overlays much deeper points of contention, presenting a case study of how commitments to nationalism and internationalism in late nineteenth‐century science were not mutually exclusive but could operate in a highly synergistic manner, even during periods of (...) intense international crisis. In the controversy, a group of scholars attempted to reconcile national rivalries with a commitment to scientific universalism and define how anthropological ideas of race and progress related to political developments. The French and German communities retained similar views that anthropology was an international science and that politically defined nationality was separate from scientifically discerned race. Yet they nevertheless regarded their work as strongly affected by processes of national consolidation and employed the language of scientific universalism to accuse their rivals of misusing science for political purposes. (shrink)

Palaeontology developed as a field dependent upon comparison. Not only did reconstructing the fragmentary records of fossil organisms and placing them within taxonomic systems and evolutionary lineages require detailed anatomical comparisons with living and fossil animals, but the field also required thinking in terms of behavioural, biological and ecological analogies with modern organisms to understand how prehistoric animals lived and behaved. Yet palaeontological material often worked against making easy linkages, bringing a sense of mystery and doubt. This paper will look (...) at an animal whose study exemplified these problems: the Chalicothere. Increasingly recognized as a specific type from finds across North America and Eurasia from the early nineteenth century onwards, these prehistoric mammals showed short back legs terminating in pawed feet, long front limbs ending in sharp claws, a long flexible neck, and herbivorous grinding teeth. The Chalicothere became a significant organism within palaeontological studies, as the unexpected mix of characters made it a textbook example against the Cuvierian notion of “correlation of parts,” while explaining how the animal moved, fed and behaved became puzzling. However, rather than prevent comparisons, these actually led to comparative analogies becoming flexible and varied, with different forms of comparison being made with varying methods and degrees of confidence, and with the anatomy, movement and behaviour of giraffes, bears, horses, anteaters, primates and other organisms all serving at various points as potential models for different aspects of the animal. This paper will examine some of the attempts to reconstruct and define the Chalicotheres across a long timescale, using this to show how multiple comparisons and analogies could be deployed in a reconstructive and evolutionary science like palaeontology, and illustrate some of the limits and tensions in comparative methods, as they were used to reconstruct organisms which were thought to be incomparable to any modern animal. (shrink)

There are three main kinds of causal connections between two events: the transfer of energy, the transfer of information and the triggering of the transfer of one of them or both. There are also other kinds of causal connections.

Pali Buddhist Texts-explained to the Beginner. Rune. E. A. Johansson. Scandinavian Institute of Asian Studies Monograph Series No. 14 Curzon Press, London, Second edition, revised and enlarged, 1977 160 pp. £4.00.