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The Sun, the Earth, and Near-earth Space by John A. Eddy Pdf
" ... Concise explanations and descriptions - easily read and readily understood - of what we know of the chain of events and processes that connect the Sun to the Earth, with special emphasis on space weather and Sun-Climate."--Dear Reader.
Author : Robert W. Schunk,Andrew F. Nagy Publisher : Cambridge University Press Page : 572 pages File Size : 48,9 Mb Release : 2000-06-26 Category : Science ISBN : 9780521632379
An Introduction to Space Weather by Mark Moldwin Pdf
Our space age technology enables global communication, navigation, and power distribution that has given rise to our 'smart', interconnected and spacefaring world. Much of the infrastructure modern society depends on, to live on Earth and to explore space, is susceptible to space weather storms originating from the Sun. The Second Edition of this introductory textbook is expanded to reflect our increased understanding from more than a dozen scientific missions over the past decade. Updates include discussions of the rapidly expanding commercial space sector, orbital debris and collision hazards, our understanding of solar-terrestrial connections to climate, and the renewed emphasis of human exploration of the Moon and Mars. It provides new learning features to help students understand the science and solve meaningful problems, including some based on real-world data. Each chapter includes learning objectives and supplements that provide descriptions of the science and learning strategies to help students and instructors alike.
An expansive and revelatory study of Robert Smithson’s life and the hidden influences on his iconic creations This first biography of the major American artist Robert Smithson, famous as the creator of the Spiral Jetty, deepens understanding of his art by addressing the potent forces in his life that were shrouded by his success, including his suppressed early history as a painter; his affiliation with Christianity, astrology, and alchemy; and his sexual fluidity. Integrating extensive investigation and acuity, Suzaan Boettger uncovers Smithson’s story and, with it, symbolic meanings across the span of his painted and drawn images, sculptures, essays, and earthworks up to the Spiral Jetty and beyond, to the circumstances leading to what became his final work, Amarillo Ramp. While Smithson is widely known for his monumental earthwork at the edge of the Great Salt Lake, Inside the Spiral delves into the arc of his artistic production, recognizing it as a response to his family’s history of loss, which prompted his birth and shaped his strange intelligence. Smithson configured his personal conflicts within painterly depictions of Christ’s passion, the rhetoric of science fiction, imagery from occult systems, and the impersonal posture of conceptual sculpture. Aiming to achieve renown, he veiled his personal passions and transmuted his professional persona, becoming an acclaimed innovator and fierce voice in the New York art scene. Featuring copious illustrations never before published of early work that eluded Smithson’s destruction, as well as photographs of Smithson and his wife, the noted sculptor Nancy Holt, and recollections from nearly all those who knew him throughout his life, Inside the Spiral offers unprecedented insight into the hidden impulses of one of modern art’s most enigmatic figures. With great sensitivity to the experiences of loss and existential strife that defined his distinct artistic language, this biographical analysis provides an expanded view of Smithson’s iconic art pilgrimage site and the experiences and works that brought him to its peculiar blood red water.
Imagine the North American Indians as astronomers carefully watching the heavens, charting the sun through the seasons, or counting the sunrises between successive lumar phases. Then imagine them establishing observational sites and codified systems to pass their knowledge down through the centuries and continually refine it. A few years ago such images would have been abruptly dismissed. Today we are wiser. Living the Sky describes the exciting archaeoastronomical discoveries in the United States in recent decades. Using history, science, and direct observation, Ray A. Williamson transports the reader into the sky world of the Indians. We visit the Bighorn Medicine Wheel, sit with a Zuni sun priest on the winter solstice, join explorers at the rites of the Hopis and the Navajos, and trek to Chaco Canyon to make direct on-site observations of celestial events.
***Completely revised version of the original 1904 edition*** "The hypothesis of a universal force called Gravitation is based upon, and was indeed invented with a view to support another hypothesis, namely, that the earth and sea together make up a vast globe, whirling away through space, and therefore needing some force or forces to guide it in its mad career, and so control it as to make it conform to what is called its annual orbit round the sun! The theory first of all makes the earth to be a globe; then not a perfect globe, but an oblate spheroid, flattened at the 'poles'; then more oblate, until it was in danger of becoming so flattened that it would be like a cheese; and, passing over minor variations of form, we are finally told that the earth is pear-shaped, and that the 'elipsoid has been replaced by an apoid!' What shape it may assume next we cannot tell; it will depend upon the whim or fancy of some astute and speculating 'scientist.'"
Proof and Proving in Mathematics Education by Gila Hanna,Michael de Villiers Pdf
*THIS BOOK IS AVAILABLE AS OPEN ACCESS BOOK ON SPRINGERLINK* One of the most significant tasks facing mathematics educators is to understand the role of mathematical reasoning and proving in mathematics teaching, so that its presence in instruction can be enhanced. This challenge has been given even greater importance by the assignment to proof of a more prominent place in the mathematics curriculum at all levels. Along with this renewed emphasis, there has been an upsurge in research on the teaching and learning of proof at all grade levels, leading to a re-examination of the role of proof in the curriculum and of its relation to other forms of explanation, illustration and justification. This book, resulting from the 19th ICMI Study, brings together a variety of viewpoints on issues such as: The potential role of reasoning and proof in deepening mathematical understanding in the classroom as it does in mathematical practice. The developmental nature of mathematical reasoning and proof in teaching and learning from the earliest grades. The development of suitable curriculum materials and teacher education programs to support the teaching of proof and proving. The book considers proof and proving as complex but foundational in mathematics. Through the systematic examination of recent research this volume offers new ideas aimed at enhancing the place of proof and proving in our classrooms.
Pathfinder NDA/NA National Defence Academy & Naval Academy Entrance Examination by Arihant Experts Pdf
1. Pathfinder NDA/NA Entrance Examination - prescribed under UPSC Guidelines. 2. The Self Study Guide divides the entire syllabus in 4 Major Sections 3. Provides 5 Previous Years' Solved Papers for practice 4. More than 8000 MCQs for quick revision of topics 5. Chapterwise division of Previous Years' Questions. 6. Gives deep insight of the paper pattern, its types and weightage in the exam. Mark Twain once said, “Patriotism is supporting your country all time and government when it deserves it”. The Union services commission or UPSC has released the notification of about 413 seats for the NDA/NA exam 2022. Here comes the updated edition of the Pathfinder series “NDA/NA Entrance Examination” comprehensively complete syllabus of entrance examination as prescribed by UPSC. The book has been divided into chapters that are categorized under 4 major subjects; Mathematics, General English, General Science, General Studies providing a complete coverage. Each chapter of every section has been well explained with proper theories for better understanding. More than 8000 MCQs and Previous Years’ Solved Papers are providing a deep insight for examination patterns and types of questions asked in the exam. Chapterwise Division of Previous Years’ Solved Papers are provided with well detailed answers to clarify all the doubts. This book a must have for those who aim to score high for upcoming NDA/NA Exam. TOC NDA/NA Solved Paper 2021 – 2017 (I & II), , General English, General Science, General Studies.