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4 produkter
4 produkter
Technology for Global Economic and Environment Survival Prosperity
Proceedings of an International Conference Held in Miami Beach, Florida, November 8-10, 1996
Inbunden, Engelska, 1997
850 kr
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1 061 kr
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This volume, proceedings of a symposium on global warming and energy policy, explores two major environmental concerns that arise from fuel use: the prospect that the globe will become warmer as a result of emissions of carbon dioxide, and the effect upon health of the fine particles emitted as combustion products. In regards to the former, in the second half of the 20th century there were major increases in anthropogenic CO2 emissions, and it is generally agreed that these were responsible for an increase in CO2 concentrations. However, the relationship between global temperature and CO2 is unclear. It is known, though, that water vapour is a more important greenhouse gas than CO2 and that the concentrations of water vapour vary widely in time and space. It is generally believed that as temperature increases so does the water vapor, leading to further temperature increases. Some scientists agree with this model, and some disagree with it.This volume (a) outlines the situation of predicting temperature rise, (b) outlines the present situation on the effect of temperature on economic activity, (c) discusses what steps can be taken to clarify this situation, and (d) discusses what society might do while waiting for these steps to produce results. In regards to the effect of combustion products on health, the situation in this case is less global, although many parts of the world are affected. Depending on epidemiological study alone, it is hard to be sure about a risk caused by a substance unless it at least doubles the frequency of an outcome which occurs naturally. The scientific uncertainties, therefore, remain almost as large as those for global warming.
758 kr
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Paul Dirac, who died in 1984, was without question one of the greatest physicists of the twentieth century. His revolutionary contribution to modern quantum theory is remembered for its insight and creativity. He is especially famous for his prediction of the magnetic moment and spin of the electron and for the existence of antiparticles. He was awarded the Nobel Prize for physics in 1933 at the age of 31. In this memorial volume, 24 of Dirac's friends, colleagues and contemporaries remember him with affection. There are chapters describing Dirac's personality, and many anecdotes about the man with a reputation for silence. Other chapters describe Dirac's science and its impact on modern physics.
527 kr
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The following proceedings contains most of the contributions given at Orbis Scientiae 1981. As has become customary during the past few years, the organizers and moderators have attempted to strike a balance between reviews of the status of experimental and theoretical developments during the preceding year. We are very pleased that experimentalists representing the critical developments in new accelerator plans, neutrino oscillations, proton decay, and decay schemes of the upsilon, have seen fit to enlighten at first hand their theoretical colleagues. We believe that this interaction can be of great benefit to both groups. The reports of theorists on many of the key theoretical advances by the practitioners themselves is a particularly satisfying feature of this series of conferences and is a tribute to the care and wisdom of the session moderators. Although it has not been a customary editorial practice, we feel that it is particularly appropriate to point out that the 1981 recipient of the J. Robert Oppenheimer Memorial Prize was Professor Frederick Reines, of University of California, Irvine, for his pioneering experiments which first experimentally estab lished the existence of the neutrino. The flurry of activit- experimental and theoretical - generated by recent evidence for massive neutrinos is amply reflected in the contents of this volume. The enthusiasm and skill of Mrs. Helga S. Billings and Mrs. Susan L. Maxon in the organization and the running of the con ference, as well as in the preparation of these proceedings, is gratefully acknowledged.