Libros de Física, página 16 de 362

Estos libros del saber de astronomía escritos por el rey sabio Alfonso X de Castilla y que compiló y anotó D. Manuel Rico y Sinobas en cinco volúmenes, hacen referencia a uno de los aspectos menos conocidos del Rey, su pasion por la contemplacion de la boveda celeste y la relacion que tuvo este arte con el gobierno de un propio reino.

The scientific study of networks, including computer networks, social networks, and biological networks, has received an enormous amount of interest in the last few years. The rise of the Internet and the wide availability of inexpensive computers have made it possible to gather and analyze network data on a large scale, and the development of a variety of new theoretical tools has allowed us to extract new knowledge from many different kinds of networks. The study of networks is broadly interdisciplinary and important developments have occurred in many fields, including mathematics, physics, computer and information sciences, biology, and the social sciences. This book brings together for the first time the most important breakthroughs in each of these fields and presents them in a coherent fashion, highlighting the strong interconnections between work in different areas.Subjects covered include the measurement and structure of networks in many branches of science, methods for analyzing network data, including methods developed in physics, statistics, and sociology, the fundamentals of graph theory, computer algorithms, and spectral methods, mathematical models of networks, including random graph models and generative models, and theories of dynamical processes taking place on networks.

This book explores the applications of AI and how it can be used to embark on a metaphysical quest to identify the topology of the universe as a prerequisite to implementing a physical model of the d

The long-awaited second edition of this well-received textbook gives a thorough introduction to observational astronomy. Starting with the basics of positional astronomy and systems of time, it continues with charts and catalogs covering both historically important publications and modern electronic databases. The book builds on a fundamental discussion of the basics of light and the effects of the atmosphere on astronomical observations. Chapters include discussions of optical telescopes, detectors, photometry, variable stars, astrometry, spectroscopy, and solar observations. This edition contains new discussions of measurements with CCDs and appendices give basic statistical methods, useful astronomical software and websites, and sources of accurate time-calibration signals. Observational Astronomy is the perfect textbook for upper level undergraduate or beginning graduate courses on astronomy. Examples based on real astronomical data are placed throughout the text. Each of the well-illustrated chapters is supported by a set of graduated problems and suggestions for further reading.

La desertificación representa, cada día más, un grave problema económico, social y ecológico para muchos países de todas las regiones del mundo. La Comunidad Internacional, consciente del problema, ha comenzado a mostrar una preocupacion creciente por detener este fenomeno. Ya en la Conferencia de Nairobi (1977) y especialmente en la Conferencia de las Naciones Unidas sobre el Medio Ambiente y el Desarrollo (CNUMAD, 1992) se propuso canalizar todos los esfuerzos a traves de un convenio internacional especifico. Finalmente el 22 de diciembre de 1996 entro en vigor la Convencion de las Naciones Unidas de Lucha contra la Desertificacion en los paises afectados por sequia grave o desertificacion, en particular Africa (CLD) que fue concebida como un marco juridicamente vinculante para dar una respuesta global al deterioro medioambiental y lograr medios de subsistencia sostenibles.

Accurate, authoritative and comprehensive, Optics, Fourth Edition has been revised to provide readers with the most up-to-date coverage of optics. The market leader for over a decade, this book provides a balance of theory and instrumentation, while also including the necessary classical background. The writing style is lively and accessible. For college instructors, students, or anyone interested in optics.

The recent groundbreaking discovery of nonzero neutrino masses and oscillations has put the spotlight on massive neutrinos as one of the key windows on physics beyond the standard model as well as into the early universe. This third edition of the invaluable book Massive Neutrinos in Physics and Astrophysics is an introduction to the various issues related to the theory and phenomenology of massive neutrinos for the nonexpert, providing at the same time a complete and up-to-date discussion on the latest results in the field for the active researcher. It is designed not merely to be a guide but also as a self-contained tool for research with all the necessary techniques and logics included. Specially emphasized are the various implications of neutrino discoveries for the nature of new forces. Elementary discussions on topics such as grand unification, left -- right symmetry and supersymmetry are presented. The most recent cosmological and astrophysical implications of massive neutrinos are also dealt with.