Die Astrologie der Antike

This survey of classical astrology is in three parts: a) a summary of its rich and eventful history from the Babylonians to the Renaissance; b) the methods of calculation which remained the same throughout the period, based on the planets, the zodiac and the “twelve houses”; c) an analysis of astrological thought, which is quite different from any modern approach; providing a rigid interpretation of the universe, it granted confort and security. It presents a curious combination of religion and science: the physics is the one forwarded by the stoïcs, with an equal balance of the four elements, and the microcosmic economy within the soul representing the macrocosmic one; but such a determinism is in contradiction with the Stoics' sense of responsability which presupposes free will.     

Die Pansophie des Comenius und der Baconismus der Royal Society

The specific comprehension of the subject of the modern times in the 17th century articulates itself in the pretension to be the master of the world of nature and human beings. This pretension, however, was not longer legitimated in a theological or biblical argumentation, but with the philosophical hint on a special qualification of the human being: knowledge and science. In this view, the philosophical reflections of Francis Bacon of Verulam, which were culminating in the well-known judgement of the coincidence of knowledge and power, became the very important philosophy of science of the most prominent academy of sciences in the 17th century: The Royal Society of London. This “Baconism” distincted himself strictly from all questions belonging to religion, politics, social or moral problems. This distinction was the reason for its opposition to the “Pansophie” of Johann Amos Comenius, whose main intention was the general reformation of the whole world, including a reform of science, religion and politics. The insistence of Comenius for the social responsibility of science is still up-to-date.     

An der Schwelle zum Atomzeitalter. Die Vorgeschichte der Entdeckung der Kernspaltung im Dezember 1938

On the Threshold of the Atomic Age: The History of the Discovery of Nuclear Fission in December 1938: - Fifty years ago in mid-December 1938, Otto Hahn and Fritz Strassmann at the Kaiser Wilhelm Institute of Chemistry discovered nuclear fission by demonstrating, using chemical methods, the presence of barium in the decay products of neutron-irradiated uranium. This essay points out the constellation of conditions and prerequisites (Historischer Erfahrungsraum/“historical field of experience”) which led to the discovery of nuclear fission, and was constituted by specific components (“presentabilia”) both internal and external to science in general and to atomic research in particular. A decisive role was played by the constellation of the three members of the Berlin team and their personal situations under the political conditions of the 1930s. Further “presentabilia” were the institutional, instrumental and disciplinary conditions under which the team worked and the methods available to the individual members of the team. It was very important that some of the “presentabilia” were “not-present” to the members of the team. In particular, after Meitner's departure from Berlin Hahn and Strassmann had no access to methods and tools for proving the presence of alpha rays; nothing was known of the existence of actinides; no cyclotron or other source of neutrons more productive than those already in use in Berlin, Paris and Rome was available; it was very important that Strassmann and Hahn were not convinced of the strong validity of the resonance process induced by thermal neutrons; etc.     

Die Seele auf der Bühne der Justiz. Die Entstehung der Kriminalpsychologie im 19. Jahrhundert und ihre interdisziplinäre Erforschung

The mind on the stage of justice: The formation of criminal psychology in the 19th century and its interdisciplinary research. – Criminal psychology emerges at the end of the 18th century as a new academic discipline in lectures and publications. It has recently been investigated by a considerable number of contributions from researchers of different academic backgrounds. In many respects criminal psychology can be seen as a predecessor of criminology. Its subject is the analysis of the origins of crime and its causes and determinants in the human mind. Criminal psychology embraced at that time philosophical, medical, legal and biological aspects. The latter increase in importance in the second half of the 19th century. The conditions of individual responsibility were generally codified in penal law, but had to be individually investigated in crucial cases through expertise in court. There a conflict emerged between medical experts and judges about their ability and competence to decide. At the end of the 19th century criminal psychology is used to fulfil the needs and interests of a criminal law which understands itself as increasingly utilitarian. Force and new instruments of treatment of offenders were legitimized by scientists who were very optimistic about their own epistemological abilities.     

Die Mathematisierung der Naturwissenschaften vor dem Hinter-grund der Bildungsvorstellungen des 19. Jahrhunderts

Both, astronomy in the first half of the 19th century and physics in the second half of the 19th century functioned as models and paradigms for the other sciences. The paradigmatic character of a theoretical, mathematical astronomy was due mainly to its capability to predict future events. According to the influence of the Romantische Naturphilosophie the mathematization of physics in Germany took place belatedly compared to France. A modified Newtonian research program with its mathematical implications was adopted by German physicists only after the establishment of the principle of energy conservation. German physicists of the late 19th century claimed over and above the results of physicists the successes of German technology for physics and interpreted these achievements as “cultural” achievements. They combined this claim with a request for a better representation of physics in the curricula of secondary schools so as to be comparable to that of mathematics. The resistance of the most prestigious secondary schools, the Humanistische Gymnasien, against this request meant that the concept of Bildung as propagated by physicists was not accepted generally in Germany.     

Die subjektive Objektivität der mittelalterlichen Medizin

The problem of ‘reality’ and ‘realism’ is rarely discussed in medieval medical texts, although medieval medicine is based on objectivity. There are three reasons why medieval physicians were so sure about their image of human nature: the convincing model of humoral pathology, the undoubted truth of tradition, and the suggestive similarities between worldly things and their presumed divine purpose. Thus, individual cases were only examples of the common theory of medicine and were by no means able to change it.     

Die Einheit der Wissenschaftssprache. Einige wissenschaftstheoretische und wissenschaftshistorische Anmerkungen

Among those conceptions of the history of science which deal with the formation of theories is the concept of the unity of science. This unity is in turn based on the unity of scientific method, the unity of scientific laws and the unity of the language of science. After a systematic explication of modern approaches, historical conceptions of the unity of the language of science are described and analyzed. To these belong first of all the idea of a mathesis universalis and the so called Leibniz program, which leads to the architecture of a Leibniz world.     

Die historia francorum senonensis und der Aufstieg des Hauses Capet

In this inquiry the author confronts the historiographical view of the rise of the Capetians to power, as represented by the Historia Francorum Senonensis, with historical reality. He comes to the conclusion that the medieval historian, writing in the thirties of the eleventh century, sought by the selection, combination, interpretation, and presentation of his passages to propagate a view which had originated at the archbishop's court at Sens. The actual political motive was the dispute of Sens with Reins over coronation rights; it was this that explains the anti-Capetian tendency of the author's account of the dynastic change in 987. Moreover, it is possible to discern a political consciousness which was able to consider the West-Frankish/French monarchy as independent from dynastic considerations. We are thus dealing not with a historiographical statement of the Carolingian point of view, but with the reaction to a particular situation in ecclesiastical politics combined with a non-personal theory of the state.