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Varying Gravity
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Download or read book Varying Gravity written by Helge Kragh and published by Birkhäuser. This book was released on 2016-02-05 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main focus of this book is on the interconnection of two unorthodox scientific ideas, the varying-gravity hypothesis and the expanding-earth hypothesis. As such, it provides a fascinating insight into a nearly forgotten chapter in both the history of cosmology and the history of the earth sciences. The hypothesis that the force of gravity decreases over cosmic time was first proposed by Paul Dirac in 1937. In this book the author examines in detail the historical development of Dirac’s hypothesis and its consequences for the structure and history of the earth, the most important of which was that the earth must have been smaller in the past.
Book Synopsis Applications of Gravity Anomalies in Geophysics by : Henglei Zhang
Download or read book Applications of Gravity Anomalies in Geophysics written by Henglei Zhang and published by Frontiers Media SA. This book was released on 2024-01-26 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of the density of the subsurface of a planet is crucial in determining its interior structure, and one can estimate the average bulk crustal density directly using the admittance between topography and gravity, which has been successfully used for the Moon and is being extended to Mars. The interpretation of gravity data is commonly done by computation of a gravity anomaly (GA) by correcting the raw data for a number of factors that impact the gravity field. Depending on the target science, different types of GA can be computed, the interpretation of which have been widely employed in geophysics to explore the interior of the Earth and other planets, through applications in airborne gravity, near-surface geophysics, regional geophysics, and planetary geophysics. Yet how to extract a great variety of information from GAs for applications in geophysics entails further investigation. Over the decades, remarkable progress has been made to extract information from GAs identified from data. For instance, a series of 3D inversion algorithms facilitates the extraction of the subsurface density distribution. With the improved processing based on dense gravity observations that yield high precision and high resolution GAs, more detailed geological information can be unveiled. When using the admittance between topography and gravity to estimate the crustal density, it is essential to identify what kinds of GAs to be used, such as Bouguer gravity or free-air gravity. Also, what appropriate approaches to scrutinize the applications of GAs in various case studies (e.g., calculating the geoid and estimating the elastic thickness) need to be decoded.
Book Synopsis Gravity Interpretation by : Wolfgang Jacoby
Download or read book Gravity Interpretation written by Wolfgang Jacoby and published by Springer Science & Business Media. This book was released on 2009-02-01 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gravity interpretation involves inversion of data into models, but it is more. Gravity interpretation is used in a “holistic” sense going beyond “inversion”. Inversion is like optimization within certain a priori assumptions, i.e., all anticipated models lie in a limited domain of the a priori errors. No source should exist outside the anticipated model volume, but that is never literally true. Interpretation goes beyond by taking “outside” possibilities into account in the widest sense. Any neglected possibility carries the danger of seriously affecting the interpretation. Gravity interpretation pertains to wider questions such as the shape of the Earth, the nature of the continental and oceanic crust, isostasy, forces and stresses, geol- ical structure, nding useful resources, climate change, etc. Interpretation is often used synonymously with modelling and inversion of observations toward models. Interpretation places the inversion results into the wider geological or economic context and into the framework of science and humanity. Models play a central role in science. They are images of phenomena of the physical world, for example, scale images or metaphors, enabling the human mind to describe observations and re- tionships by abstract mathematical means. Models served orientation and survival in a complex, partly invisible physical and social environment.
Book Synopsis Biomechatronics: Harmonizing Mechatronic Systems with Human Beings by : Dingguo Zhang
Download or read book Biomechatronics: Harmonizing Mechatronic Systems with Human Beings written by Dingguo Zhang and published by Frontiers Media SA. This book was released on 2019-02-05 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook provides a comprehensive treatise on modern biomechatronic systems centred around human applications. A particular emphsis is given to exoskeleton designs for assistance and training with advanced interfaces in human-machine interaction. Some of these designs are validated with experimental results which the reader will find very informative as building-blocks for designing such systems. This eBook will be ideally suited to those researching in biomechatronic area with bio-feedback applications or those who are involved in high-end research on man-machine interfaces. This may also serve as a textbook for biomechatronic design at post-graduate level.
Book Synopsis Low-Gravity Fluid Dynamics and Transport Phenomena by : Robert L. Sani
Download or read book Low-Gravity Fluid Dynamics and Transport Phenomena written by Robert L. Sani and published by AIAA. This book was released on 1990 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gravity and Magnetic Exploration by : William J. Hinze
Download or read book Gravity and Magnetic Exploration written by William J. Hinze and published by Cambridge University Press. This book was released on 2013-03-14 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: This combination of textbook and reference manual provides a comprehensive account of gravity and magnetic methods for exploring the subsurface using surface, marine, airborne and satellite measurements. It describes key current topics and techniques, physical properties of rocks and other Earth materials, and digital data analysis methods used to process and interpret anomalies for subsurface information. Each chapter starts with an overview and concludes by listing key concepts to consolidate new learning. An accompanying website presents problem sets and interactive computer-based exercises, providing hands-on experience of processing, modeling and interpreting data. A comprehensive online suite of full-color case histories illustrates the practical utility of modern gravity and magnetic surveys. This is an ideal text for advanced undergraduate and graduate courses and reference text for research academics and professional geophysicists. It is a valuable resource for all those interested in petroleum, engineering, mineral, environmental, geological and archeological exploration of the lithosphere.
Book Synopsis Stratigraphic and Geographic Variation of Shale-oil Specific Gravity from Colorado's Green River Formation by : John Ward Smith
Download or read book Stratigraphic and Geographic Variation of Shale-oil Specific Gravity from Colorado's Green River Formation written by John Ward Smith and published by . This book was released on 1966 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Domenico J. W. Giulini Publisher :Springer Science & Business Media ISBN 13 :9783540408109 Total Pages :426 pages Book Rating :4.4/5 (81 download)
Book Synopsis Quantum Gravity by : Domenico J. W. Giulini
Download or read book Quantum Gravity written by Domenico J. W. Giulini and published by Springer Science & Business Media. This book was released on 2003-09-16 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: The relation between quantum theory and the theory of gravitation remains one of the most outstanding unresolved issues of modern physics. According to general expectation, general relativity as well as quantum (field) theory in a fixed background spacetime cannot be fundamentally correct. Hence there should exist a broader theory comprising both in appropriate limits, i.e., quantum gravity. This book gives readers a comprehensive introduction accessible to interested non-experts to the main issues surrounding the search for quantum gravity. These issues relate to fundamental questions concerning the various formalisms of quantization; specific questions concerning concrete processes, like gravitational collapse or black-hole evaporation; and the all important question concerning the possibility of experimental tests of quantum-gravity effects.
Book Synopsis The Cosmology of Extra Dimensions and Varying Fundamental Constants by : Carlos Martins
Download or read book The Cosmology of Extra Dimensions and Varying Fundamental Constants written by Carlos Martins and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: The workshop on The Cosmology of Extra Dimensions and Varying Fundamental Constants, which was part of JENAM 2002, was held at the Physics Department of the University of Porto (FCUP) from the 3rd to the 5th of September 2002. It was regularly attended by about 110 participants, of which 65 were officially registered in the VFC workshop, while the others came from the rest of the JENAM workshops. There were also a few science correspondents from the national and international press. During the 3 days of the scientific programme, 8 Invited Reviews and 30 Oral Communications were presented. The speakers came from 11 different European countries, and also from Argentina, Australia, Canada, Japan and the U.S.A. There were also speakers from six Portuguese research institutions, and nine of the speak ers were Ph.D. students. The contributions are presented in these proceedings in chronological order. The workshop brought together string theorists, particle physicists, theoretical and observational cosmologists, relativists and observational astrophysicists. It was generally agreed that this inter-disciplinarity was the greatest strength of the work shop, since it provided people coming into this very recent topic from the various different backgrounds with an opportunity to understand each other's language and thereby gain a more solid understanding of the overall picture.
Book Synopsis Gravity, Geoid and Geodynamics 2000 by : Michael G. Sideris
Download or read book Gravity, Geoid and Geodynamics 2000 written by Michael G. Sideris and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: This symposium continued the tradition of mid-term meetings held between the joint symposia of International Geoid and Gravity Commissions. This time, geodynamics was chosen as the third topic to accompany the traditional topics of gravity and geoid. The symposium thus aimed at bringing together geodesists and geophysicists working in the general areas of gravity, geoid and geodynamics. Besides covering the traditional research areas, special attention was paid to the use of geodetic methods for geodynamics studies, dedicated satellite missions, airborne surveys, geodesy and geodynamics of arctic regions, and the integration of geodetic and geophysical information.
Book Synopsis The International Space University's Variable Gravity Research Facility Design by : Sheila G. Bailey
Download or read book The International Space University's Variable Gravity Research Facility Design written by Sheila G. Bailey and published by . This book was released on 1991 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Satellite Gravity and the Geosphere by : National Research Council
Download or read book Satellite Gravity and the Geosphere written by National Research Council and published by National Academies Press. This book was released on 1997-09-02 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the past three decades, it has been possible to measure the earth's static gravity from satellites. Such measurements have been used to address many important scientific problems, including the earth's internal structure, and geologically slow processes like mantle convection. In principle, it is possible to resolve the time-varying component of the gravity field by improving the accuracy of satellite gravity measurements. These temporal variations are caused by dynamic processes that change the mass distribution in the earth, oceans, and atmosphere. Acquisition of improved time-varying gravity data would open a new class of important scientific problems to analysis, including crustal motions associated with earthquakes and changes in groundwater levels, ice dynamics, sea-level changes, and atmospheric and oceanic circulation patterns. This book evaluates the potential for using satellite technologies to measure the time-varying component of the gravity field and assess the utility of these data for addressing problems of interest to the earth sciences, natural hazards, and resource communities.
Book Synopsis Earth Gravity Field from Space - from Sensors to Earth Sciences by : G. Beutler
Download or read book Earth Gravity Field from Space - from Sensors to Earth Sciences written by G. Beutler and published by Springer Science & Business Media. This book was released on 2003-10-31 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume resulting from an ISSI Workshop, 11-15 March 2002, Bern, Switzerland
Book Synopsis Gravity, Geoid and Height Systems by : Urs Marti
Download or read book Gravity, Geoid and Height Systems written by Urs Marti and published by Springer. This book was released on 2015-01-13 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes a selection of papers presented at the IAG international symposium "Gravity, Geoid and Height Systems 2012" (GGHS2012), which was organized by IAG Commission 2 “Gravity Field” with the assistance of the International Gravity Field Service (IGFS) and GGOS Theme 1 “Unified Global Height System”. The book summarizes the latest results on gravimetry and gravity networks, global gravity field modeling and applications, future gravity field missions. It provides a detailed compilation on advances in precise local and regional high-resolution geoid modeling, the establishment and unification of vertical reference systems, contributions to gravity field and mass transport modeling as well as articles on the gravity field of planetary bodies.
Book Synopsis Einstein Gravity in a Nutshell by : A. Zee
Download or read book Einstein Gravity in a Nutshell written by A. Zee and published by Princeton University Press. This book was released on 2013-05-05 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt: An ideal introduction to Einstein's general theory of relativity This unique textbook provides an accessible introduction to Einstein's general theory of relativity, a subject of breathtaking beauty and supreme importance in physics. With his trademark blend of wit and incisiveness, A. Zee guides readers from the fundamentals of Newtonian mechanics to the most exciting frontiers of research today, including de Sitter and anti-de Sitter spacetimes, Kaluza-Klein theory, and brane worlds. Unlike other books on Einstein gravity, this book emphasizes the action principle and group theory as guides in constructing physical theories. Zee treats various topics in a spiral style that is easy on beginners, and includes anecdotes from the history of physics that will appeal to students and experts alike. He takes a friendly approach to the required mathematics, yet does not shy away from more advanced mathematical topics such as differential forms. The extensive discussion of black holes includes rotating and extremal black holes and Hawking radiation. The ideal textbook for undergraduate and graduate students, Einstein Gravity in a Nutshell also provides an essential resource for professional physicists and is accessible to anyone familiar with classical mechanics and electromagnetism. It features numerous exercises as well as detailed appendices covering a multitude of topics not readily found elsewhere. Provides an accessible introduction to Einstein's general theory of relativity Guides readers from Newtonian mechanics to the frontiers of modern research Emphasizes symmetry and the Einstein-Hilbert action Covers topics not found in standard textbooks on Einstein gravity Includes interesting historical asides Features numerous exercises and detailed appendices Ideal for students, physicists, and scientifically minded lay readers Solutions manual (available only to teachers)
Book Synopsis Topics On Quantum Gravity And Beyond: Essays In Honor Of Louis Witten On His Retirement by : Freydoon Mansouri
Download or read book Topics On Quantum Gravity And Beyond: Essays In Honor Of Louis Witten On His Retirement written by Freydoon Mansouri and published by World Scientific. This book was released on 1993-05-31 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This festschrift was conceived in connection with the symposium 'Topics on Quantum Gravity and Beyond,' held in honor of Louis Witten. The majority of the essays deal with problems on the frontiers of quantum gravity and string theories. There are also articles on atomic, nuclear, and particle physics, to name a few.
Book Synopsis The Canadian Patent Office Record by : Canada. Patent Office
Download or read book The Canadian Patent Office Record written by Canada. Patent Office and published by . This book was released on 1913 with total page 2108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
