Download or read book The Theory of Cosmic Grains written by N.C. Wickramasinghe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light scattering and absorption by small homogeneous particles can be worked-out exactly for spheres and infinite cylinders. Homogeneous particles of irregular shapes, when averaged with respect to rotation, have effects that can in general be well-approximated by reference to results for these two idealised cases. Likewise, small inhomogeneous particles have effects similar to homogeneous particles of the same average refractive index. Thus most problems can be solved to a satisfactory approximation by reference to the exact solutions for spheres and cylinders, which are fully stated here in the early part of the book. The sum of scattering and absorption, the extinction, is too large to be explained by inorganic materials, provided element abundances in the interstellar medium are not appreciably greater than solar, H 0 and NH3 being essentially excluded in the 2 general medium, otherwise very strong absorptions near 3p,m would be observed which they are not. A well-marked extinction maximum in the ultraviolet near 2200A has also not been explained satisfactorily by inorganic materials. Accurately formed graphite spheres with radii close to O.02p,m could conceivably provide an explanation of this ultraviolet feature but no convincing laboratory preparation of such spheres has ever been achieved.
Download or read book A Journey with Fred Hoyle written by Chandra Wickramasinghe and published by World Scientific. This book was released on 2013 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the story of the author''s unique scientific journey with one of the most remarkable men of 20th century science. The journey begins in Sri Lanka, the author''s native country, with his childhood acquaintance with Fred Hoyle''s writings. The action then moves to Cambridge, where the famous HoyleOCoWickramasinghe collaborations begin. A research programme which was started in 1962 on the carbonaceous nature of interstellar dust leads, over the next two decades, to developments that are continued in both Cambridge and Cardiff. These developments prompt Hoyle and the author to postulate the organic theory of cosmic dust (which is now generally accepted), and then to challenge one of the most cherished paradigms of contemporary science OCo the theory that life originated on Earth in a warm primordial soup.This new edition examines the many scientific developments that have transpired since the first edition was published. The discovery of bacteria in the upper reaches of the atmosphere, biological signatures in meteorites, spectroscopy of high-z galaxies and more all mesh with many of the ideas that had their origin in the first edition. Pushing into the future, the updated text examines the many experiments and probes currently operating or planned that will shed more light on the theory of planetary panspermia. A Journey with Fred Hoyle is an intriguing book that delineates the progress of a collaboration spanning 40 years, through a sequence of personal reflections, anecdotes and reminiscences.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-02 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Library of Congress Subject Headings written by Library of Congress and published by . This book was released on 1993 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Future of Life and the Future of our Civilization written by Vladimir Burdyuzha and published by Springer Science & Business Media. This book was released on 2006-10-12 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the proceedings of "The Future of Life and the Future of our Civilization" symposium, held in Frankfurt, Germany in May 2005.
Download or read book Library of Congress Subject Headings written by Library of Congress. Cataloging Policy and Support Office and published by . This book was released on 2001 with total page 1614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vindication Of Cosmic Biology Tribute To Sir Fred Hoyle 1915 2001 written by Nalin Chandra Wickramasinghe and published by World Scientific. This book was released on 2015-05-28 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the year 2015, 100 years after Fred Hoyle was born, the ideas relating to the cosmic origins of life are slowly gaining credence in scientific circles. Once regarded as outrageous heresy, evidence from a variety of disciplines — astronomy, geology, biology — is converging to support these once heretical ideas.This volume opens with recent review articles pointing incontrovertibly towards our cosmic heritage, followed by a collection of published articles tracing the development of the theory throughout the years. The discovery that microorganisms — bacteria and viruses — are incredibly resistant to the harshest conditions of space, along with the detection of an estimated 144 billion habitable planets around other star systems in our galaxy alone, makes it virtually impossible to maintain that life on one planet will not interact with life elsewhere. The emerging position is that life arose exceedingly rarely, possibly only once, in the history of the cosmos, but its subsequent spread was unstoppable. 'Panspermiology' can no longer be described as an eccentric doctrine, but rather is the only doctrine supported by an overwhelming body of evidence. Fred Hoyle's work in this area may in the fullness of time come to be regarded as his most important scientific contribution.
Download or read book Scattering from Model Nonspherical Particles written by Ferdinando Borghese and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the first coherent account of a well-known approach to the problem of light scattering by small anisotropic particles. In this extended second edition the authors have encompassed all the new topics arising from their recent studies of cosmic dust grains. Thus many chapters were deeply revised and new chapters were added. The book addresses a wide spectrum of applications.
Download or read book Cosmology and Controversy written by Helge Kragh and published by Princeton University Press. This book was released on 2021-03-09 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: For over three millennia, most people could understand the universe only in terms of myth, religion, and philosophy. Between 1920 and 1970, cosmology transformed into a branch of physics. With this remarkably rapid change came a theory that would finally lend empirical support to many long-held beliefs about the origins and development of the entire universe: the theory of the big bang. In this book, Helge Kragh presents the development of scientific cosmology for the first time as a historical event, one that embroiled many famous scientists in a controversy over the very notion of an evolving universe with a beginning in time. In rich detail he examines how the big-bang theory drew inspiration from and eventually triumphed over rival views, mainly the steady-state theory and its concept of a stationary universe of infinite age. In the 1920s, Alexander Friedmann and Georges Lemaître showed that Einstein's general relativity equations possessed solutions for a universe expanding in time. Kragh follows the story from here, showing how the big-bang theory evolved, from Edwin Hubble's observation that most galaxies are receding from us, to the discovery of the cosmic microwave background radiation. Sir Fred Hoyle proposed instead the steady-state theory, a model of dynamic equilibrium involving the continuous creation of matter throughout the universe. Although today it is generally accepted that the universe started some ten billion years ago in a big bang, many readers may not fully realize that this standard view owed much of its formation to the steady-state theory. By exploring the similarities and tensions between the theories, Kragh provides the reader with indispensable background for understanding much of today's commentary about our universe.
Download or read book Understanding The Origin And Global Spread Of Covid 19 written by Nalin Chandra Wickramasinghe and published by World Scientific. This book was released on 2022-06-29 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This curated collection of scientific papers on the origin and global spread of COVID-19 is a unique project that offers explanations at odds with mainstream views as the theme mainly focuses on Panspermia (viruses, microorganisms and their spores, and cometary arrival of even more complex cellular organisms).No other scientific group has paid attention to the temporal unfolding scientific order at the many required levels of understanding — astrobiological and astrophysical, geographical and the temporal order of global proportions, yet regional epidemics, the immunologic dimensions to the infection and epidemic data, the genetics of the SARS-CoV-2 virus as it adapted, varied and appeared in different human populations in the crucial first few months of the pandemic. This in-depth analysis, over a two-year period, allows a better understanding of what engulfed the world during the COVID-19 pandemic, how it happened and the most plausible way.There are many lessons for future generations that can be distilled from the contributions found in this book.
Download or read book Interstellar Grains written by Chandra Wickramasinghe and published by . This book was released on 1967 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1986 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Cumulative Book Index written by and published by . This book was released on 1992 with total page 2410 pages. Available in PDF, EPUB and Kindle. Book excerpt: A world list of books in the English language.
Download or read book Worlds in Interaction Small Bodies and Planets of the Solar System written by Hans Rickman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planet Earth is part of our Galactic environment, not just the product of it, and it is still today influenced by phenomena related to Galactic forces. Specifically, our planet is affected by its near environment, in particular the small bodies in the Solar System. This book reviews the processes which cause the collisions of these small bodies with the Earth as well as the consequences of such collisions. The various articles take the reader through the Galaxy-Solar System connection to the orbital dynamics of the small bodies and to their number and distribution in near-Earth space. The hazards of the impacts of small bodies on Earth are evaluated, and the geophysical records of such impacts are discussed. The book takes the reader to the forefront of research on both impact cratering and the origin and evolution of small bodies in the Solar System. Thus it brings together two subjects, geophysics and astronomy, which are usually discussed in separate volumes but are closely knit together in this particular area of research.
Download or read book Proceedings Astronomical Society of Australia written by Astronomical Society of Australia and published by . This book was released on 1993 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Universe In A Grain Of Sand Introduction To Cosmology written by Nicky Huys and published by Nicky Huys. This book was released on 2023-12-24 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Universe in a Grain of Sand: Introduction to Cosmology" takes readers on a captivating journey through the mysteries of the cosmos. From the tiniest particles to the vast expanse of space, this book explores the fundamental principles of cosmology, offering a comprehensive introduction to the science of the universe. Through clear, accessible language, it delves into topics such as the origins of the universe, the nature of dark matter and energy, the evolution of galaxies, and the ultimate fate of the cosmos. With a blend of scientific insight and philosophical contemplation, this book ignites a sense of awe and curiosity about the grandeur and complexity of the universe.
