![]() |
Welcome to Loot.co.za!
Sign in / Register |Wishlists & Gift Vouchers |Help | Advanced search
|
Your cart is empty |
||
|
Books > Science & Mathematics > Astronomy, space & time
This work is addressed to advanced undergraduate and graduate students in astronomy, geology, chemistry, meteorology, and the planetary sciences as well as to researchers with pertinent areas of specialization who desire an introduction to the literature across the broad interdisciplinary range of this important topic. Extensive references to the pre-spacecraft literature will be particularly useful to readers interested in the historical development of the field during this century.
This book is a collection of essays written by the very scientists and engineers who have led, and continue to lead, the scientific quest known as SETI, the search for extraterrestrial intelligence. Divided into three parts, the first section, 'The Spirit of SETI Past', written by the surviving pioneers of this then emerging discipline, reviews the major projects undertaken during the first 50 years of SETI science and the results of that research. In the second section, 'The Spirit of SETI Present', the present-day science and technology is discussed in detail, providing the technical background to contemporary SETI instruments, experiments, and analytical techniques, including the processing of the received signals to extract potential alien communications. In the third and final section, 'The Spirit of SETI Future', the book looks ahead to the possible directions that SETI will take in the next 50 years, addressing such important topics as interstellar message construction, the risks and assumptions of interstellar communications, when we might make contact, what aliens might look like and what is likely to happen in the aftermath of such a contact.
This book is the result of a working group sponsored by ISSI in
Bern, which was initially created to study possible ways to
calibrate a Far Ultraviolet (FUV) instrument after launch. In most
cases, ultraviolet instruments are well calibrated on the ground,
but unfortunately, optics and detectors in the FUV are very
sensitive to contaminants and it is very challenging to prevent
contamination before and during the test and launch sequences of a
space mission. Therefore, ground calibrations need to be confirmed
after launch and it is necessary to keep track of the temporal
evolution of the sensitivity of the instrument during the mission.
This thesis develops and establishes several methods to determine the detailed geometric architecture of transiting exoplanetary systems (planets orbiting around, and periodically passing in front of, stars other than the sun) using high-precision photometric data collected by the Kepler space telescope. It highlights the measurement of stellar obliquity - the tilt of the stellar equator with respect to the planetary orbital plane(s) - and presents methods for more precise obliquity measurements in individual systems of particular interest, as well as for measurements in systems that have been out of reach of previous methods. Such information is useful for investigating the dynamical evolution of the planetary orbit, which is the key to understanding the diverse architecture of exoplanetary systems. The thesis also demonstrates a wide range of unique applications of high-precision photometric data, which expand the capability of future space-based photometry.
..".The Multiversal book series is equally unique, providing book-length extensions of the lectures with enough additional depth for those who truly want to explore these fields, while also providing thekind of clarity that is appropriate for interested lay people to grasp the general principles involved." - Lawrence M. Krauss Cosmic Update Covers: A novel approach to uncover the dark faces of the Standard Model of cosmology.The possibility that Dark Energy and Dark Matter are manifestations of the inhomogeneous geometry of our Universe.On the history of cosmological model building and the general architecture of cosmological modes.Illustrations on the Large Scale Structure of the Universe.A new perspective on the classical static Einstein Cosmos.Global properties of World Models including their Topology.The Arrow of Time in a Universe with a Positive Cosmological Constant.Exploring the consequences of a fundamental Cosmological Constant for our Universe. Exploring why the current observed acceleration of the Universe may not be its final destiny.Demonstrating that nature forbids the existence of a pure Cosmological Constant.Our current understanding of the long term (in time scales that greatly exceed the current age of the Universe) future of the Universe.The long term fate and eventual destruction of the astrophysical objects that populate the universe --including clusters, galaxies, stars, planets, and black holes. The material is presented in a layperson-friendly language followed by addition technical sections that explain the basic equations and principles. This feature is very attractive to readers who want to learn more about the theories involved beyond the basic description. "Multiversal Journeys is a trademark of Farzad Nekoogar and Multiversal Journeys, a 501 (c) (3) nonprofit organization.""
Beginning with the famous Olber's paradox, a number of cosmological paradoxes, such as the missing mass, dark energy, and the baryon-to-photon ratio, have been and are today the subject of many scientific controversies. The Big Bang model, anticipated by Lemaitre in 1927 and reformulated twenty years later by Gamow, Alpher and Herman, is one of the most spectacular successes in the entire history of physics. It remains today surrounded by considerable theoretical speculation without sufficient observational support. This book discusses such paradoxes in depth with physical and logical content and historical perspective, and has not much technical content in order to serve a wide audience.
Beginning with the famous Olber's paradox, a number of cosmological paradoxes, such as the missing mass, dark energy, and the baryon-to-photon ratio, have been and are today the subject of many scientific controversies. The Big Bang model, anticipated by Lemaitre in 1927 and reformulated twenty years later by Gamow, Alpher and Herman, is one of the most spectacular successes in the entire history of physics. It remains today surrounded by considerable theoretical speculation without sufficient observational support. This book discusses such paradoxes in depth with physical and logical content and historical perspective, and has not much technical content in order to serve a wide audience.
The non-Gaussianity in the primordial density fluctuations is a key feature to clarify the early Universe and it has been probed with the Cosmic Microwave Background (CMB) bispectrum. In recent years, we have treated the novel-type CMB bispectra, which originate from the vector- and tensor-mode perturbations and include the violation of the rotational or parity invariance. On the basis of our current works, this thesis provides the general formalism for the CMB bispectrum sourced by the non-Gaussianity in the scalar, vector and tensor-mode perturbations. Applying this formalism, we calculate the CMB bispectra from the two scalars and a graviton correlation and primordial magnetic fields, and then outline new constraints on these magnitudes. Furthermore, this formalism can be easily extended to the cases where the rotational or parity invariance is broken. We also compute the CMB bispectra from the scalar-mode non-Gaussianities with a preferred direction and the tensor-mode non-Gaussianities induced by the parity-violating Weyl cubic terms. Here, we show that these bispectra include unique signals, which any symmetry-invariant models can never produce.
This book investigates Venus and Mercury prospective energy and material resources. It is a collection of topics related to exploration and utilization of these bodies. It presents past and future technologies and solutions to old problems that could become reality in our life time. The book therefore is a great source of condensed information for specialists interested in current and impending Venus and Mercury related activities and a good starting point for space researchers, inventors, technologists and potential investors. Written for researchers, engineers, and businessmen interested in Venus and Mercury exploration and exploitation.
This book describes the origins and evolution of the chemical elements we and the cosmos are made of. The story starts with the discovery of the common elements on Earth and their subsequent discovery in space. How do we learn the composition of the distant stars? How did progress in quantum theory, nuclear physics, spectroscopy, stellar structure and evolution, together with observations of stars, converge to provide an incredibly detailed picture of the universe? How does research in the micro-world explain the macro-world? How does progress in one affect the other, or lack of knowledge in one inhibit progress in the other? In short, Shaviv describes how we discovered the various pieces of the jigsaw that form our present picture of the universe; and how we sometimes put these in the wrong place before finding in the right one. En route we meet some fascinating personalities and learn about heated controversies. Shaviv shows how science lurched from one dogma to the next, time and again shattering much of what had been considered solid knowledge, until eventually a stable understanding arose. Beginning with generally accepted science, the book ends in today's terra incognita of nuclear physics, astrophysics and cosmology. A monumental work that will fascinate scientists, philosophers, historians and lay readers alike.
This book is written from the viewpoint of a deep connection between cosmology and particle physics. It presents the results and ideas on both the homogeneous and isotropic Universe at the hot stage of its evolution and in later stages. The main chapters describe in a systematic and pedagogical way established facts and concepts on the early and the present Universe. The comprehensive treatment, hence, serves as a modern introduction to this rapidly developing field of science. To help in reading the chapters without having to constantly consult other texts, essential materials from General Relativity and the theory of elementary particles are collected in the appendices. Various hypotheses dealing with unsolved problems of cosmology, and often alternative to each other, are discussed at a more advanced level. These concern dark matter, dark energy, matter-antimatter asymmetry, etc.
Since the year 2000 the ESA Cluster mission has been investigating the small-scale structures and processes of the Earth's plasma environment, such as those involved in the interaction between the solar wind and the magnetospheric plasma, in global magnetotail dynamics, in cross-tail currents, and in the formation and dynamics of the neutral line and of plasmoids. This book contains presentations made at the 15th Cluster workshop held in March 2008. It also presents several articles about the Cluster Active Archive and its datasets, a few overview papers on the Cluster mission, and articles reporting on scientific findings on the solar wind, the magnetosheath, the magnetopause and the magnetotail.
Primordial Cosmology deals with one of the most puzzling and fascinating topics debated in modern physics - the nature of the Big Bang singularity. The authors provide a self-consistent and complete treatment of the very early Universe dynamics, passing through a concise discussion of the Standard Cosmological Model, a precise characterization of the role played by the theory of inflation, up to a detailed analysis of the anisotropic and inhomogeneous cosmological models. The most peculiar feature of this book is its uniqueness in treating advanced topics of quantum cosmology with a well-traced link to more canonical and pedagogical notions of fundamental cosmology.This book traces clearly the backward temporal evolution of the Universe, starting with the Robertson-Walker geometry and ending with the recent results of loop quantum cosmology in view of the Big Bounce. The reader is accompanied in this journey by an initial technical presentation which, thanks to the fundamental tools given earlier in the book, never seems heavy or obscure.
This book is written from the viewpoint of a deep connection between cosmology and particle physics. It presents the results and ideas on both the homogeneous and isotropic Universe at the hot stage of its evolution and in later stages. The main chapters describe in a systematic and pedagogical way established facts and concepts on the early and the present Universe. The comprehensive treatment, hence, serves as a modern introduction to this rapidly developing field of science. To help in reading the chapters without having to constantly consult other texts, essential materials from General Relativity and the theory of elementary particles are collected in the appendices. Various hypotheses dealing with unsolved problems of cosmology, and often alternative to each other, are discussed at a more advanced level. These concern dark matter, dark energy, matter-antimatter asymmetry, etc.
Most stars appear to show some degree of magnetic activity. Varying magnetic fields show up in the familiar sun-spot cycle and in similar activity in other cool stars. Many hot stars carry steady magnetic fields stronger than the average solar field and are well described as oblique rotators. A similar model is applicable to the rapidly rotating, enormously dense neutron stars with their far stronger fields, observed as radio and X-ray pulsars. Galactic magnetic fields may play a crucial role in star formation, and in the spectacular behaviour in galactic nuclei. Cosmical magnetism in general is a rapidly developing field, and this book has grown out of the lifelong work of an outstanding researcher in the area. An authoritative account with broad astronomical scope, its thorough, careful and well-argued approach makes it a fine addition to the professional literature. Most of the important topics are treated in mathematical depth with references to other relevant literature. Some of the studies, especially those on accretion discs, dynamos, and winds, are applicable to galaxies and galactic nuclei. This book is sure to become an invaluable professional reference and guide to current thinking in the field. It will be of particular interest to graduate students, for whom it shows how the area has developed and indicates the many challenging research problems, some of which may soon yield their secrets to the emerging supercomputers.
Time is relative, situation-dependent, location- and culturally-dependent, and very much subjective. Yet we treat it as if it were objective. We share standardized time, and we are dependent on it for almost everything we do. When it comes to waking up, business meetings, transportation, finding your way via GPS, seeing friends, watching a show, we are all dependent on a standardized notion of time and time measurement. The future gives us hope and deadlines drive innovation and productivity. Time drives us forward and we talk about time - all the time! The word "time" is the most used noun in English, followed by "year" in third place and "day" in fifth. We are obsessed with it, for a lot of very good and practical reasons. The book looks at time through different perspectives (ranging from physics, history, philosophy, anthropology to art, business & politics, biology and psychology). The author's aim is to bring us closer to the nature and our experience of time by looking at it from different lenses to improve our understanding of what time is and what it is not - and to use that knowledge to improve how we organize ourselves around time. It's by better understanding time's nature and experience that we can keep the positive and productive elements of time and get rid of the unhealthy time practices in our lives.
1. Paradigmatische Konstruktionen.- Unser heutiges Wirklichkeits-Verstandnis.- Wirklichkeits-Pluralismus.- Entstehen von Wirklichkeiten.- Lebendiger Vollzug von Wirklichkeiten.- Fruchtbare Vielfalt.- Simultane und sequenzielle Wirklichkeiten in der Lebenswelt.- Okkulte Wirklichkeiten und andere Geheimlehren.- Gefahrliche Verabsolutierungen.- 2. Farbe als Wirklichkeit.- Goethes Farbenlehre.- Physiologische Farben.- Farblose Bilder.- Farbige Bilder.- Farbige Schatten.- Schwach wirkende Lichter, subjektive Hoefe, pathologische Farben.- Physische Farben.- Dioptrische Farben der 1. Klasse.- Dioptrische Farben der 2. Klasse.- Das Phanomen der Refraktion.- Refraktion ohne Farberscheinung.- Farberscheinungen bei Linsen.- Grundzuge refraktionsbedingter Farberscheinungen.- Farberscheinungen bei Prismen.- Farberscheinungen an gro?en und kleinen wei?en Bildern.- Farberscheinungen an gro en und kleinen schwarzen Bildern.- Farberscheinungen sind nie statisch.- Zum Wesen von Licht und Farbe aus Goetheseher Sieht.- Wichtige, ganz allgemeine Begriffe.- Die Polaritat.- Die Steigerung.- Phanomen und Urphanomen.- Farbenkreis und Spektrogramm.- Newtons Farben des Liehts.- Newtons Experimente.- 1. Experiment.- 2. Experiment.- 3. Experiment.- 4. Experiment.- 5. Experiment.- Das We sen der Farbe.- Einfache Farbmetrik.- Das Auge.- Der Spektralfarbenzug.- Zwei Wirklichkeiten.- 3. Heilkundliche Wirkliehkeiten.- Chinesische Lebenswirkliehkeit.- Das Schafgarbenorakel.- Das Yin-Yang-Prinzip.- Shen und Kuei. Qi und Jing.- Die funf Elemente.- Chinesische Medizin.- Yin-Yang-Theorie.- Lebenssubstanzen.- Qi.- Blut und Safte.- Jing.- Shen.- Die Funktion der inneren Organe.- Die Leitbahnen oder die Meridiane.- Wie kommt es zur Disharmonie?.- Die Sechs UEbel.- Die sieben Emotionen.- Die Lebensweise.- Das Dishannoniemuster.- Ein Beispiel.- Ein simultanes Massenphanomen.- 4. Mikro-Wirklichkeiten.- Spiele als Mikro-Wirklichkeiten.- Definition des Spielbegriffes.- Die Vielfalt der Spiele.- Mikro-Wirklichkeiten im weiteren Sinn.- 5. Wirklichkeit eines Verbrechens.- Ein Beispiel aus der japanischen Literatur.- Eine neue Erzlihlung des Rashomon-Textes.- Die Aussage eines Holzfallers.- Die Aussage eines Wandergeistlichen.- Die Aussage eines Gerichtsdieners.- Die Aussage einer alten Frau.- Das Gestandnis des Raubers.- Die Aussage eines Gefahrten des Raubers.- Bericht eines Waldbewohners.- Die Beichte der Ehefrau in einem Kloster.- Der Geist des Toten spricht durch den Mund einer Wahrsagerin.- Vergewaltigung und Tod.- 6. Verwandlung von Wirklichkeiten.- Siddhartha. Eine indische Dichtung.- Die Brahmana-Welt.- Die Samana-Welt.- Die Buddha-Welt.- Die Menschenkinder-Welt.- Am Flu?.- 7. Magie und Damonie.- Weissagung.- Wirksarnkeit von Weissagungen.- Kassandra.- Die delphische Seherin.- Andere Fonnen der Weissagung.- Zauber und Damonen.- Magische Praktikep in der Volkskunst.- Magische Praktiken' der Antike.- Kirke verzaubert Manner.- Hexen morden Knaben.- Fluche verandern das Leben.- Fluchtafeln.- Ovids Ibis.- Schamanen.- Spuren des Schamanismus in der Neuzeit.- Antike Schamanen.- Orpheus.- Pythagoras.- Empedokles.- Vespasian.- Nekromantie.- Die Macht des Okkulten.- Magie und Damonie als Wirklichkeit?.- 8. Totalitare Wirklichkeiten.- Wahnsinn als totalitare Wirklichkeit.- Das Entstehen eines Wahnes.- Der logische Zusammenhang von Wahnideen.- Die weitgehende Unkorrigierbarkeit.- Gro?en und Verfolgungswahn.- Groe?enwahn.- Verfolgungswahn.- Paranoia erotica.- Eifersuchtsparanoia.- Religioeser Wahn mit erotischer Komponente.- Kraftentfaltung in totalitaren Wirklichkeiten.- Der Kriegstanz der Maori.- Atomare Bedrohung.- Extremsituationen in totalitaren Wirklichkeiten.- Der Tag des Blutes.- Der spontane Volkszorn.- Entgleisung einer Hochtechnologie.- Die Eigendynamik und die Hilflosigkeit.- 9. Chance und Bedrangnis.- Wirklichkeit ist eine Konstruktion. Der Urgrund ist ohne Eigenschaften.- Wirklichkeiten als Gewordenes.- Die Lebenswirklichkeit als Ausgangsbasi
Four hundred years after Kepler discovered his third law of planetary motion, disproving the Pythagorean notion of 'the music of the spheres', music was discovered in the Sun. With this discovery the science of helioseismology was born. Just as we can see the face of a foetus in the womb via ultrasound, and as bats can 'see' their way around using sonar, helioseismologists can now see inside the depths of the sun simply by listening to it. In The Music of the Sun, renowned helioseismologist William Chaplin tells the story of this discipline's origins and gives us invaluable insight into its implications - not only for better understanding the distant sun and stars - but for cosmology, particle physics, and the very relationship between the Sun and the Earth.
The book introduces the solar coronal mass ejection phenomena. This includes both those observed in the corona and those further from the Sun, known as interplanetary coronal mass ejections. We discuss the history and physics behind these phenomena, theories describing their launch and evolution, association with other solar eruptive phenomena, and methods employed for their detection and scientific data extraction. Instruments used for their study (past, present and future) are also discussed, along with their resulting space weather effects on Earth and other planets. The latter requires a description of the Earth 's magnetosphere, which is also included. Coronal Mass Ejections brings together solar physics, heliospheric physics, and magnetospheric physics, three traditionally separate fields of study. The content is accessible to beginning graduate students who are trying to master difficult fundamental concepts.
This extensive thesis work covers several topics, including intensity and polarization, focusing on a new polarization bias reduction method. Vidal studied data from the WMAP satellite, which is low signal-to-noise and as such has to be corrected for polarization bias. He presents a new method for correcting the data, based on knowledge of the underlying angle of polarization. Using this novel method, he sets upper limits for the polarization fraction of regions known to emit significant amounts of spinning dust emissions. He also studies the large-scale loops and filaments that dominate the synchrotron sky. The dominant features are investigated, including identification of several new features. For the North Polar Spur, a model of an expanding shell in the vicinity of the Sun is tested, which appears to fit the data. Implications for CMB polarization surveys are also discussed. In addition, Vidal presents interferometric observations of the dark cloud LDN 1780 at 31 GHz and shows that the spinning dust hypothesis can explain the radio properties observed.
This prize-winning thesis deals with the observation and modeling of the spectral evolution of blazars. Based on single-dish light curves, a model of shock-shock interaction is tested and confirmed using multi-frequency high resolution Very Long Baseline Observations. He presents state-of-the art numerical relativistic hydrodynamic simulations and the corresponding non-thermal emission is calculated (eRHD simulations). The author further presents new analysis techniques for VLBI observations that can be applied to numerous sources and provide reliable results including an error estimate using Monte Carlo simulations. He also develops an analytical shock model that can be applied quickly to other single dish observations. He shows how novel techniques of extraction of physical parameters from observations can be applied to other astrophysical sources and provide a link to a better understanding of the physical mechanism operating in blazar jets. |
You may like...
I Am Vision Creator - The Original…
Odusola (Talitha D Prophet)
Hardcover
R652
Discovery Miles 6 520
Plays Worth Remembering - Volume 1 - A…
William C. Ade
Hardcover
|