The book presents a comprehensive, yet concise analysis of groundwater occurrence, its development, technology involved in exploration, extraction, and its economical usage.The book makes use of minimum technical jargon, while explaining the basics of drilling, types of wells, their maintenance, development and testing, and selection of pumps. It discusses the causes for wells failing, methods of diagnosis and the pre-emptive and remedial measures, water transmission, composition, and purification. Unlike other natural resources, groundwater is replenished by rainfall. Nevertheless those who depend on groundwater either for industrial or agricultural sustenance should be responsive to certain factors that are significant to the long-term well-being of the water source. Important are: Whether the wells are being over-pumped, or under-pumped; the quantity and cost of water being drawn, whether there is sufficient water underground with optimum replenishment, and systems installed are compatible to the particular hydrological situation and similar such factors. The book attempts, in simplistic language, to link the gap between theory and practice; between the principles of groundwater as a natural science and its application technology. There are a number of pre-calculated tables that serve as a handy reference for Consultants, Drillers and Engineers who deal with groundwater on a day-to-day basis.

At the time of my retirement on March 31, 2006, I challenged myself with a handful of goals. With this publication, all have now been accomplished. Initially, I did not plan to publish. I did plan to write a manuscript or a story . . . or just write something about the universe. I felt compelled to give my fascination with the universe some sort of order, something that would punctuate my life. Upon completion, I wondered if it might have some merit to others and scoped out the thought of publication. I found the manuscript very readable and relatively elementary. It should prove interesting to science students of all levels as well as all people interested in the universe.

Have you ever wondered what comets are and why astronomers spend so much time studying them? Now, a comet expert and an astronomical historian have come together to produce this unique book. Using their several decades of teaching experience, the authors have concisely presented the information you need to comprehend these majestic apparitions that grace our night skies. No mathematical proficiency is needed. In fact, this book doesn't contain a single equation. Comets are cosmic Rosetta stones, bridging our current knowledge by digging back to the earliest days of our solar systems. How did life arise on Earth? Did comets play a significant role in bringing water and the necessary organic matter to our early Earth? How about the dinosaurs? Were they driven to extinction by a cometary impact 66 million years ago? Comets may be both the enablers and destroyers of life on Earth as we know it. These are some of the tantalizing questions discussed here. If you so desire, steps are given to join the ranks of amateur comet hunters. Astronomy is one of the last sciences where amateurs play a significant role. Your reward for discovery? A comet officially bearing your name in the history books. The next great comet is on its way, we just do not know when it will arrive. Armed with this book, you will be ready to enjoy this unforgettable event.

In Secrets of UFO Technology, Kenneth W. Behrendt (author of The Physics of the Paranormal) reveals some of the conclusions he reached concerning the UFO phenomenon after decades of intensive research. The result is a unique treatment of the subject that is far in advance of what has been generally available to date. After learning how an extraterrestrial craft negates its normal mass and weight to achieve gravity free, inertialess flight, you'll be ready to take inspection tours of a typical flying saucer and mother ship. During your journey of discovery, you'll also learn how UFOs stall automobiles, how alien craft and their crews can become invisible, how ufonauts levitate themselves for independent flight outside of their craft, and all about the shocking details behind the cattle mutilation cases. Secrets of UFO Technology is a profusely illustrated work that truly has the potential to revolutionize the science of ufology!

METALLURGICAL PROBLEMS MY ALLISON BUTTS, A. B., B. S. Professor of Electrometallurgy, Lehigh U Co-author of Engineering Metallurgy SECOND EDITION THIRD IMPRESSION McGRAW-HILL BOOK COMPANY, INC. NEW YOKK AND LONDON 1043 METALLURGICAL PROBLEMS COPYRIGHT, 1932, 1943, BY THE McGRAW-HiLL BOOK COMPANY, INC. PRINTED IN THE UNITED STATES OF AMERICA All rights reserved. This book, or parts thereof, may not be reproduced in any form wthout permission of the publishers. DEDICATED TO THE MEMORY OF JOSEPH WILLIAM RICHARDS PIONEER IN METALLURGICAL CALCULATIONS AN INSPIRING TEACHER AND A MAN OF RARE QUALITIES PREFACE The purposes in view in preparing the second edition of this book may be included largely in three categories 1 the desirability of bringing the work up to date both with respect to changes in the fundamental data used in metallurgical calculations and with respect to changes in metal lurgical practice 2 changes dictated by the experience of the author and of others in eleven years use of the book, particularly with regard to textual clarification, arrangement, and better balance of the problem material and 3 the desirability of making available new problem material in place of some of that which has been used repeatedly in class instruction over a long period. The first edition of A Textbook of Metallurgical Problems was an outgrowth of Professor Joseph W. Richardss book Metallurgical Calculations which was regarded by many as one of the most useful books available to the metallurgical industry. Since Richardss volume was not in a form most suitable for use as a college text, it was then the object of the present author not only to produce a more recent work in the same field asMetallurgical Calculations, but also to make available a book more adaptable to student use. In this second edition the same objects remain the title has been shortened to Metallurgical Problems both for the sake of brevity and to avoid emphasizing its function as a textbook to the exclusion of a hoped-for usefulness to industry. The first edition of this book attempted to follow the methods and forms used by Richards to such an extent as to make it relatively easy to use by those accustomed to his book, while at the same time using more recent data, new material in accordance with later practice, and some innovations in harmony with instructional changes made in college depart ments of chemistry and physics. The same plan is followed in the second edition, but the changes have been carried further, following progress in technical education. For example, free energy and other thermo dynamic concepts did not appear in Richardss book, nor was any use made of methods of calculus. These were introduced in the first edition of this book and have been extended in the second edition. Nevertheless, knowledge of higher mathematics is still relatively unimportant in the use of the book also, the substitution of the more familiar heats of reaction for free-energy change has not been abandoned for approximate calcula tions when these may be properly used. With regard to heats of reaction, vii Viu . PREFACE a change has been made in this edition to the A concept and notation now so widely adopted in physical chemistry and therefore made familiar to present-day students. In revising the physical and chemical data in this book, the author has drawn from recently published compilations acknowledged atthe appropriate places rather than from original sources. These - compila-tions for the most part present data in the forms most often desired in scientific work. In some instances these are not the forms most useful in industry, and much time has been spent by the author in conversion to what seemed to be a more readily usable basis...

Colours play is an important role in our daily life. Colour theory is a complex field of knowledge. On the occasion of 200 years Goethe's colour theory (2010) an interdisciplinary symposium "Colours in culture and science" was organized. The different topics are now discussed and presented in this book: 1. Colours in Philosophy and Epistemology, 2. Colours in Cultural History - Pigments and Dyes, 3. Colours in Art and Cultural History, 4. Light and Colour - Colour Theory: Newton's Physics versus Goethe, 4. Colour Theories, Colour Systems and Colour Chemistry, 5. Colour Perception and Colour Vision and 6. Cultural Meaning of Colours. Charakteristisch fur die unterschiedlichen Auffassungen der Natur- und Geisteswissenschaftler ist der Streit uber die Farbentheorien von Newton und Goethe; sind das zwei unvereinbare Weltanschauungen? So sind im Symposium Colours in culture and science - Farben in Kulturgeschichte und Naturwissenschaft - anlasslich von 200 Jahre Goethes Farbenlehre - die verschiedenartigsten Aspekte zum Thema Farben" zur Sprache gekommen, unter Einbeziehung der Farbenforschung in den Kulturwissenschaften, u. a. der Archaologie und der Kunst- und Kulturgeschichte. Auch die Bedeutungen der Farben in der Zeichentheorie (Semiotik) sowie in den verschiedenen Bereichen der Naturwissenschaften (Astronomie, Physik, Chemie und Biologie) und der Technik wurden behandelt, um dem Phanomen Farbe sowohl unter geistes- als auch unter naturwissenschaftlichem Aspekt gerecht zu werden. Interessanterweise hatte die Goethesche Farbentheorie (mit dem Farbkreis und der Idee der Polaritat, Gegenfarbentheorie) sogar eine grosse Wirkung insbesondere auf die Kunst (z. B. Turner, van Gogh, Bauhaus), aber sie lieferte auch diverse Anregungen fur die Philosophie, die Musik, die Neurophysiologie (die Theorie der Farbwahrnehmung) und die Ordnung von Farbraumen (die Farbmetrik). Eine Erforschung des Themas Farben kann nur in einem interdisziplinaren Ansatz erfolgen. In diesem Zusa

Is death the end? Will there really be an afterlife? Does the Christian teaching about Heaven actually bring anyone real peace? Having been plagued by such questions, the author set out to find answers. This book is the result of one man's struggle with the certainty of the grave. In the first half, the scriptures are applied in an attempt to develop a Christian view of demise. However, section two draws on the best evidence from philosophy, science, history and personal experience that death is not the end. Throughout the book various types of death are examined and each one is likened to a doorway. If death is a doorway, everyone has their own idea of what it will look like. All of this enables the reader to construct a healthy view of death's door so that they may one day pass gracefully. Whether you are wrestling with the death of a loved one, facing the end of your own life, or live in fear of the grave, Death is a Doorway was written for you.

This book (hardcover) is part of the TREDITION CLASSICS. It contains classical literature works from over two thousand years. Most of these titles have been out of print and off the bookstore shelves for decades. The book series is intended to preserve the cultural legacy and to promote the timeless works of classical literature. Readers of a TREDITION CLASSICS book support the mission to save many of the amazing works of world literature from oblivion. With this series, tredition intends to make thousands of international literature classics available in printed format again - worldwide.

With a field so broad in both breadth and depth as that making up the contemporary study of complex systems, it is well nigh impossible to cover all the bases underlying the development of well argued, robust and relevant understanding of these systems. That is one of the reasons why the international journal Emergence: Complexity and Organization has offered a Classical Paper in each issue. Now, in this current volume we have made available in one publication venue the diverse Classical Papers that have been published so far in E: CO. These papers are offered not only to enrich our current understandings by exhibiting the historical background to many of today's leading complexity-based ideas, perspectives, and methods. They are also gathered here to help address some of the difficulties confronting not only complexity thinkers, but for that matter any thinker sincerely trying to grasp the novel situations and novel difficulties we face in modern times

This book (hardcover) is part of the TREDITION CLASSICS. It contains classical literature works from over two thousand years. Most of these titles have been out of print and off the bookstore shelves for decades. The book series is intended to preserve the cultural legacy and to promote the timeless works of classical literature. Readers of a TREDITION CLASSICS book support the mission to save many of the amazing works of world literature from oblivion. With this series, tredition intends to make thousands of international literature classics available in printed format again - worldwide.