22 Ergebnisse - Zeige 1 von 20.

The IAU Symposium No. 62, 'The Stability of the Solar System and of Small Stellar Systems' was held in Warsaw in Poland during the Extraordinary General Assembly of the IAU in commemoration of the SOOth anniversary of the birth of Nicolaus Copernicus. The Symposium was sponsored by Commission 7 (Celestial Mechanics) and cosponsored by Commissions 4 (Ephemerides) and 37 (Star Clusters and Asso­ ciations) of the IAU and by IUTAM. The Organizing ...

The present text is a rational analysis of the concept of the chemical bond by means of the principles of wave mechanics. The discussion of the material has been arranged so as to render its main content comprehensible for readers who may not have had pre"ious training in quantum mechanics. The text comprises three major parts. It begins with an exposition of the fundamental ideas. In this section the principles are reviewed from which de Brog...

The material given in this 'Introduction to astronomical photometry' is the subject matter of a lecture at the University of Geneva. It is, therefore, intended for those students, physicists or mathematicians, who have completed their bachelor's degree or diploma, and are intending to work for their Ph.D. in astronomy. We assume then the elementary ideas of astrophysics, magnitude, colour index, spectral classes, luminosity classes, gradient, ...

The present text is a rational analysis of the concept of the chemical bond by means of the principles of wave mechanics. The discussion of the material has been arranged so as to render its main content comprehensible for readers who may not have had pre"ious training in quantum mechanics. The text comprises three major parts. It begins with an exposition of the fundamental ideas. In this section the principles are reviewed from which de Brog...

Two Symposia on speciation in insects held at the Fourteenth International Congress of Entomology (Canberra, Australia, August 22-30, 1972) are included in this volume. The first, on the more general topic of Genetic Analysis of Speciation Mechanisms, includes four papers on speciation in various groups of Diptera and Orthopteroid insects. The second symposium was devoted to the topic of Evolution in the Hawaiian Drosophilidae, it deals with t...

No student or colleague of Marjorie Grene will miss her incisive presence in these papers on the study and nature of living nature, and we believe the new reader will quickly join the stimulating discussion and critique which Professor Grene steadily provokes. For years she has worked with equally sure knowledge in the classical domain of philosophy and in modern epistemological inquiry, equally philosopher of science and metaphysician. Moreov...

Proceedings of IAU Symposium No. 58 held in Canberra, Australia, August 12-15, 1973

be hoped. We have improved measurements by at best a factor of 3. So thIS paper, unfortunately, IS really a status report rather than a progress report. There are, however, a few new results to mention. I shall present the results wIthout glVlng any detaIls of the experImental apparatus. In general, sources of error and problems in these measurements are not determined by the apparatus itself. The most important new result IS that of Paul Henr...

I. THE MAN, CONRAD OF PRUSSIA Conrad of Prussia is not so much as mentioned in any of the usual sources. And even such notable mediaevalists as Mlle. Marie-Therese d'Alverny, Conservateur en-chef, and J. Reginald O'Donnell, C. S. B. , of the Pontifical Institute of Mediaeval Studies, Toronto, Canada, have been unable to identify him. Nothing at all, therefore, is known about Conrad, if that is the author's name. For there is some doubt that it...

It has been said that never has a monarch so narrowly missed "greatness" as did the Holy Roman Emperor Joseph II. An idealistic, sincere, and hardworking monarch whose ultilitarian bent, humanitarian instincts, and ambitious programs of reform in every area of public concern have prompted historians to term him an "enlightened despot, " "revolutionary Emperor, " "philosopher on a throne, " and a ruler ahead of his time, Joseph has also been co...

The effects of medicaments, used in the treatment of arthritic diseases, on the surface tension of the synovial fluid have been measured. The synovial fluid was obtained from the carpal joints of freshly slaughtered 'calves and from knee joints of arthritic patients. Values obtained for the surface tension (~) of the pure liquids were 47. 6 mN/m and 45. 8 mN/m respectively. The surf£ce tensions of the additives and their effect, as a function ...

One / Correlation and Totality.- Two / The Beginning and the Result.- Three / Potentiality and Actuality.- Four / Necessity and Freedom.- Five / The Process and the System.- Six / The First and the Second Synthesis.- Seven / Abstraction and Concreteness.

Keine Beschreibung.

This book contains selected papers from symposia and contributed sessions presented at the third biennial meeting of the Philosophy of Science Association, held in Lansing, Michigan, on October 27-29, 1972. We are grateful to Michigan State University, and especially to Professor Peter Asquith and his students and colleagues, for their friendly and efficient hospitality in organizing the circumstances of the sessions and of the 'intersessions'...

This book contains selected papers from symposia and contributed sessions presented at the third biennial meeting of the Philosophy of Science Association, held in Lansing, Michigan, on October 27-29, 1972. We are grateful to Michigan State University, and especially to Professor Peter Asquith and his students and colleagues, for their friendly and efficient hospitality in organizing the circumstances of the sessions and of the 'intersessions'...

For General George B. McClellan, the dejected Union troops who poured into Washington fresh from defeat at Bull Run on Monday, July 22, 1861, were to provide the raw material which he would train, equip, organize and ultimately transform from a mere mob into an effective fighting force. In October 1861, the Army of the Potomac officially came into being. This entertaining volume from the same team of author Philip Katcher and artist Michael Yo...

Proceedings of IAU Symposium No. 58 held in Canberra, Australia, August 12-15, 1973

be hoped. We have improved measurements by at best a factor of 3. So thIS paper, unfortunately, IS really a status report rather than a progress report. There are, however, a few new results to mention. I shall present the results wIthout glVlng any detaIls of the experImental apparatus. In general, sources of error and problems in these measurements are not determined by the apparatus itself. The most important new result IS that of Paul Henr...

Keckermann remarked of the sixteenth century, "never from the begin­ ning of the world was there a period so keen on logic, or in which more books on logic were produced and studies oflogic flourished more abun­ dantly than the period-in which we live. " 1 But despite the great profusion of books to which he refers, and despite the dominant position occupied by logic in the educational system of the fifteenth, sixteenth and seven­ teenth centu...

GEORG WILHELM FRIEDRICH HEGEL (1770-1831) THE PLACE OF HEGEL IN THE HIS TOR Y OF PHILOSOPHY In order to gain a proper perspective of Hegel's place in the history of philo­ sophy, it might be useful to focus on one key concept which has evolved significantly in meaning, from the time of Aristotle to Hegel. I am speaking of the philosophical concept of the "category. " In Aristotle's system, there were ten categories (or "predicaments") of reali...