Satellite Gravity and the Geosphere PDF Download
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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309174767
Category : Science
Languages : en
Pages : 126
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Book Description
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.
Author: Tess Gerritsen
Publisher: Simon and Schuster
ISBN: 1982172177
Category : Fiction
Languages : en
Pages : 416
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Book Description
An organism harmless on earth where it is subject to gravity terrorizes a research station in space. Scientists die violently and from their insides spill creatures that are part human, part frog and part mouse.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309174767
Category : Science
Languages : en
Pages : 126
Get Book Here
Book Description
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.
Author: Gilles Clément
Publisher: Springer Science & Business Media
ISBN: 038770714X
Category : Technology & Engineering
Languages : en
Pages : 382
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Book Description
This book reviews the principle and rationale for using artificial gravity during space missions, and describes the current options proposed, including a short-radius centrifuge contained within a spacecraft. Experts provide recommendations on the research needed to assess whether or not short-radius centrifuge workouts can help limit deconditioning of physiological systems. Many detailed illustrations are included.
Author: David Hatcher Childress
Publisher: Adventures Unlimited Press
ISBN: 9781931882170
Category : Body, Mind & Spirit
Languages : en
Pages : 270
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Book Description
Revised, expanded new edition of the weird science classic-a compilation of material on Anti-Gravity, Free Energy, Flying Saucer Propulsion, UFOs, Suppressed Technology, NASA Cover-ups and more. Includes: - Photos of Area 51 in Nevada - How to build a flying saucer - Arthur C. Clarke on anti-gravity - Crystals and their role in levitation - Secret government research and development - Nikola Tesla on how anti-gravity airships could draw power from the atmosphere - Bruce Cathie's Anti-Gravity Equation - NASA, the Moon and Anti-Gravity - The mysterious technology used by the ancient Hindus of the Rama Empire - The Rand Corporation's 1956 study on Gravity Control - T. Townsend Brown's electro-gravity experiments - How equations exist for electro-gravity and magneto-gravity - Schematics, photos and illustrations with patents, technical illustrations, photos, & cartoons
Author: Christopher Jekeli
Publisher: Springer Science & Business Media
ISBN: 3540269320
Category : Science
Languages : en
Pages : 382
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Book Description
The lAG International Symposium on Gravity, Geoid, and Space Missions 2004 (GGSM2004) was lield in the beautiful city of Porto, Portugal, from 30 August to 3 September 2004. This symposium encompassed the themes of Commission 2 (Gravity Field) of the newly structured lAG, as well as interdisciplinary topics related to geoid and gravity modeling, with special attention given to the current and planned gravi- dedicated satellite missions. The symposium also followed in the tradition of mid-term meetings that were held between the quadrennial joint meetings of the International Geoid and Gravity Commissions. The previous mid-term meetings were the International Symposia on Gravity, Geoid, and Marine Geodesy (Tokyo, 1996), and Gravity, Geoid, and Geodynamics (Banff, 2000). GGSM2004 aimed to bring together scientists from different areas in the geosciences, working with gravity and geoid related problems, both from the theoretical and practical points of view. Topics of interest included the integration of heterogeneous data and contributions from satellite and airborne techniques to the study of the spatial and temporal variations of the gravity field. In addition to the special focus on the CHAMP, GRACE, and GOCE satellite missions, attention was also directed toward projects addressing topographic and ice field mapping using SAR, LIDAR, and laser altimetry, as well as missions and studies related to planetary geodesy.
Author: Karunakar Marasakatla
Publisher: Karunakar Marasakatla
ISBN: 0981976883
Category : Science
Languages : en
Pages : 167
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Book Description
Gravity from a New Angle is a comprehensive analysis of fundamental concepts in Physics. Concepts like force, work, power and energy were developed over a period of centuries. In depth analysis of these concepts reveals that there is overlap in the way these concepts were defined. As a result, the concept of resultant force obscured the true understanding of energy interactions. Solution to most intriguing problems in Physics like Pioneer anomaly and unified theory relies on answers to the very basic questions. Does an object retain its mass when it collapses to a point mass? What is the amount of gravity at the center of the earth? In a chemical reaction between carbon and oxygen to form CO2, which atom releases the energy? Object gains mass or gravity when it collapses to a point size. Earth exerts enormous amount of gravity on an object kept at its center. Contrary to the wide spread belief, the energy in an combustion comes from the oxygen atom, which we should call as the fuel not the carbon atom. The flaws in fundamental concepts like the mass and force led our understanding of physical phenomenon in a wrong direction. By redefining these basic concepts in accordance with the observed facts, we can explain all the observed facts in an unified way. (Version 1.2)
Author: Peter G. Bergmann
Publisher: Springer Science & Business Media
ISBN: 9781402005923
Category : Science
Languages : en
Pages : 572
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Book Description
In this XVII Course of the International School of Cosmology and Gravitation devoted to "ADVANCES IN THE INTERPLAY BETWEEN QUANTUM AND GRAVITY PHYSICS" we have considered different aspects of the influence of gravity on quantum systems. In order to achieve this aim, in many lectures, seminars and discussions we have strengthened the interplay between gravity and quantum systems starting from the situation in the early universe based on astrophysical observations, up to the earthly based experiments with atom interferometry for probing the structure of space-time. Thus we have had timely lectures on the quantum field and horizon of a black hole including reviews of the problem of black holes thermodynamics and entropy, quantum information, quantum black holes, quantum evaporation and Hawking radiation, recent advances in stockastic gravity. We have also discussed quantum fluctuations in inflationary universe, quantum effects and reheating after inflation, and superplanckian energies in Hawking radiation. In this regard the subject of spinors in purely affine space-time and Dirac matter according to Weyl in the generalized theory of gravitation were developed . The dualism between space-time and matter has been deeply analyzed in order to see why, for general relativity, this is an obstacle for quantization of the theory. Also canonical Gravity and Mach's principle, torsion and curvature as commutator for Quantum Gravity and Dirac Geometry of real space-time were analysed, together with the problem of 5-Dimensional Projective Unified Field theory and Multidimensional Gravity and Cosmology.
Author: G. W. Gibbons
Publisher: World Scientific
ISBN: 9789810205164
Category : Science
Languages : en
Pages : 604
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Book Description
The Euclidean approach to Quantum Gravity was initiated almost 15 years ago in an attempt to understand the difficulties raised by the spacetime singularities of classical general relativity which arise in the gravitational collapse of stars to form black holes and the entire universe in the Big Bang. An important motivation was to develop an approach capable of dealing with the nonlinear, non-perturbative aspects of quantum gravity due to topologically non-trivial spacetimes. There are important links with a Riemannian geometry. Since its inception the theory has been applied to a number of important physical problems including the thermodynamic properties of black holes, quantum cosmology and the problem of the cosmological constant. It is currently at the centre of a great deal of interest.This is a collection of survey lectures and reprints of some important lectures on the Euclidean approach to quantum gravity in which one expresses the Feynman path integral as a sum over Riemannian metrics. As well as papers on the basic formalism there are sections on Black Holes, Quantum Cosmology, Wormholes and Gravitational Instantons.
Author: Salvatore Capozziello
Publisher: Springer Science & Business Media
ISBN: 9400701659
Category : Science
Languages : en
Pages : 447
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Book Description
Beyond Einstein’s Gravity is a graduate level introduction to extended theories of gravity and cosmology, including variational principles, the weak-field limit, gravitational waves, mathematical tools, exact solutions, as well as cosmological and astrophysical applications. The book provides a critical overview of the research in this area and unifies the existing literature using a consistent notation. Although the results apply in principle to all alternative gravities, a special emphasis is on scalar-tensor and f(R) theories. They were studied by theoretical physicists from early on, and in the 1980s they appeared in attempts to renormalize General Relativity and in models of the early universe. Recently, these theories have seen a new lease of life, in both their metric and metric-affine versions, as models of the present acceleration of the universe without introducing the mysterious and exotic dark energy. The dark matter problem can also be addressed in extended gravity. These applications are contributing to a deeper understanding of the gravitational interaction from both the theoretical and the experimental point of view. An extensive bibliography guides the reader into more detailed literature on particular topics.
Author: Santiago Arnalich
Publisher: Arnalich
ISBN: 8461437446
Category : Water
Languages : en
Pages : 114
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Book Description
This textbook teaches how to design drinking water systems and to do the calculations by hand. With minimal theory and through 28 progressive exercises, the most common scenarios are introduced one by one: branch lines, joining multiple sources, valley passes, pressure zones, and looped systems. Following simple, quick and reliable guidelines to achieve clear and tangible results for gravity flow water projects, the reader will learn how to decide on pipe diameters, check an existing design, and plan a system enlargement.
