64 results for "Science"

Physics of Planetary Rings: Celestial Mechanics of Continuous Media

Fridman, Alexei M.,Gorkavyi, Nikolai N.
1. Introduction.- 2. Observational Data.- 3. Celestial Mechanics Minimum.- 4. Elementary Particle Dynamics. I Rigid Body Collisions.- 5. Elementary Particle Dynamics. II Ring Cosmogony.- 6. Elementary Particle Dynamics. III Wave, Photometric, and Other Effects.- 7. Collective Dynamics of Disc Particles. I Formalism.- 8. Collective Dynamics of Disc Particles. II Stability Analysis.- 9. Resonance Effects in Planetary Rings. I Spiral Waves.- 10. Resonance Effects in Planetary Rings. II Narrow Ringlets and Satellites.- 11. Formation and Stability of the Uranian Rings.- 12. Origin, Dynamics, and Stability of the Neptunian Rings.- 13. Self-organisation of the Solar System.- 14. Space Studies of the Outer Planets.- Conclusion.- Appendices I. The Possibility of Studying the Dynamics of Astrophysical Discs in a Two-Dimensional Approach.- 1. Introduction.- 2. Original Equations for the "Volume" Functions.- 2.1 Initial Dynamic Equations.- 2.2 Equation of State.- 3. Derivation of the Basic Equations for the "Plane" Functions.- 3.1 Order-of-Magnitude Estimates of the Terms in the Initial Equations.- 3.2 The Two Limiting Cases of Astrophysical Discs.- 3.3 Limitations of the Characteristic Times of Processes Studied in the Two-Dimensional Approximation.- 3.4 Closed System of Integro-differential Equations for a Barotropic Disc.- 4. Closed Set of Differential Equations for a Polytropic Disc in an External Gravitational Field.- 4.1 Derivation of the Two-Dimensional Equations.- 5. Closed Set of Differential Equations for a Polytropic Self-gravitating Disc.- 5.1 Derivation of the Two-Dimensional Equations.- 5.2 Why Does the Gradient of the Plane Pressure Not Have the Physical Meaning of a Force?.- 6. Conclusion.- 1. Derivation of a Closed Set of Integro-differential Equations.- 2. Derivation of the Dispersion Equation Describing the Three-Dimensional Perturbations.- 4. Dispersion Relation for Waves in the Plane of the Disc.- 5. The Role of Perturbations Along the Rotation Axis.- 5.1 Condition for Neglecting Mass Transfer Along the Rotation Axis.- 5.1.1 General Case.- 5.1.2 Isothermal Disc.- 6. Conclusion.- III. Derivation of the Linearised Equations for Oscillations of a Viscous Disc.- 1. Derivation of the Linearised Equations for Oscillations of a Viscous Uniformly Rotating Disc.- 2. Derivation of the Linearised Equations for Oscillations of a Viscous Differentially Rotating Disc of Inelastic Particles with Account of External Matter Fluxes.- 3. Derivation of the General Dispersion Equation.- IV. Evaluating the Gravitational Potential Inside and Outside a Triaxial Ellipsoid.- 1. Potential Inside the Ellipsoid.- 2. Potential Outside the Ellipsoid.- V. A Drift Mechanism for the Formation of the Cassini Division.- 1. Introduction.- 2. Statement of the Problem.- 3. Derivation of the Non-linear Momentum Conservation Equations.- 4. Time-Averaged Non-linear Momentum Conservation Equations.- 5. Absence of Averaged Radial Mass Flux in a Dissipationless Disc. Large-Scale Convection.- 6. Radial Mass Transfer in a Viscous Disc.- 7. Evolution of the Surface Density of a Disc.- 8. Conditions for the Formation of Different Types of Resonant Structures: Gaps or Wavetrains?.- 9. Estimate of the Maximum Width of a Gap Produced by a Density Wave.- 10. Some Additional Remarks.- VI. Resonance Structures in Saturn's C Ring.- References.
Springer 2014-03-12 460 pages

Manned Laboratories in Space Second International Orbital laboratory Symposium

S. Fred Singer
The publication of this book is extremely timely, for the next major advances in manned space flight after Project Apollo will most likely be made in earth orbital operations. Manned exploration of the moon will certainly continue after the initial landing, but it will be performed essentially with the Saturn V launch vehicles and Apollo spacecraft developed in Apollo, especially in the early phases. Modifications to this basic hardware will increase operating capabilities to permit extensive lunar explo ration during prolonged stay times by the astronauts on the moon's surface. Manned orbital space stations have been studied for years, and NASA is already well along in development of its first attempt to provide more spacious accommo dations for astronaut-scientists in its Saturn Workshop program. While the Workshop is certainly not the ultimate space station of which our technology is capable, it is a workable, poor man's approach to the immediate need for using and expanding our present manned space flight capability without a de trimentalloss of momentum. The approach of converting a Saturn rocket stage into a manned laboratory and observatory in space is an improvisation that matches the use of the jerry-built Jupiter C back in 1958 to launch Explorer I. Let's hope that it can get the job done just as effectively.
Springer Netherlands 2011-10-12 133 pages

Star Myths of the World, Volume Three Star Myths of the Bible

David Warner Mathisen
The most complete guide to the ancient world-wide system of celestial metaphor, sometimes called Astro-theology, which forms the foundation for virtually all of the scriptures, myths, and sacred stories of humanity -- including the texts we call the Old Testament and New Testament of the Bible. Explore the scriptures and myths of humanity in a new light as you learn to hear the language in which they are all actually speaking: the language of the stars. Star Myths of the World and How to Interpret Them is a series of volumes exploring the amazing evidence of an ancient, world-wide system of metaphor which underlies all of the world's myths, and points to the conclusion that they are all closely related. Learn how to understand the clues and symbols in the stories which point to specific constellations, and how the constellations fit into the larger heavenly cycles, all of which are used by the ancient wisdom given to our ancestors as a precious inheritance, with information for our benefit and blessing. Volume One explored evidence that this system is worldwide, sampling a few representative myths and stories from ancient Egypt, ancient Mesopotamia, ancient India, ancient China and Japan, and myths from various cultures in Australia, Africa, the Americas, and the Pacific. Volume Two explored the massive evidence that the Greek myths are built on the same worldwide system, examining specific myths, gods, and goddesses -- as well as both the Iliad and Odyssey in depth, for their celestial patterns. Volume Three provides a broad survey of the celestial foundations of some of the most well-known stories and characters in the Old and New Testaments of the Bible, complete with hundreds of full-color illustrations and star charts.
Beowulf Books 2016-08-03 766 pages

An ephemeris, or, Almanack for the year of our Lord 1667 being the third after leap-year ... / by John Swan. (1667)

Swan, John
This book represents an authentic reproduction of the text as printed by the original publisher. While we have attempted to accurately maintain the integrity of the original work, there are sometimes problems with the original work or the micro-film from which the books were digitized. This can result in errors in reproduction. Possible imperfections include missing and blurred pages, poor pictures, markings and other reproduction issues beyond our control. Because this work is culturally important, we have made it available as part of our commitment to protecting, preserving and promoting the world's literature. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to insure edition identification: ++++ An ephemeris, or, Almanack for the year of our Lord 1667 being the third after leap-year ... / by John Swan. Swan, John, d. 1671. Running title: Swan 1667. [47] p. [Cambridge, Cambridgeshire] : Printed by John Field ..., 1667. Wing / A2475 English Reproduction of the original in the Harvard University Library ++++ This book represents an authentic reproduction of the text as printed by the original publisher. While we have attempted to accurately maintain the integrity of the original work, there are sometimes problems with the original work or the micro-film from which the books were digitized. This can result in errors in reproduction. Possible imperfections include missing and blurred pages, poor pictures, markings and other reproduction issues beyond our control. Because this work is culturally important, we have made it available as part of our commitment to protecting, preserving and promoting the world's literature.
EEBO Editions, ProQuest 2010-12-13 58 pages