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 Free Download Hydrogen: The essential element By John S. Rigden 2002 | 288 Pages | ISBN: 0674012526 | PDF | 1 MB Seduced by simplicity, physicists find themselves endlessly fascinated by hydrogen, the simplest of atoms. Hydrogen has shocked, it has surprised, it has embarrassed, it has humbled--and again and again it has guided physicists to the edge of new vistas where the promise of basic understanding and momentous insights beckoned. The allure of hydrogen, crucial to life and critical to scientific discovery, is at the center of this book, which tells a story that begins with the big bang and continues to unfold today. In this biography of hydrogen, John Rigden shows how this singular atom, the most abundant in the universe, has helped unify our understanding of the material world from the smallest scale, the elementary particles, to the largest, the universe itself. It is a tale of startling discoveries and dazzling practical benefits spanning more than one hundred years--from the first attempt to identify the basic building block of atoms in the mid-nineteenth century to the discovery of the Bose-Einstein condensate only a few years ago. With Rigden as an expert and engaging guide, we see how hydrogen captured the imagination of many great scientists--such as Heisenberg, Pauli, SchrГ¶dinger, Dirac, and Rabi--and how their theories and experiments with this simple atom led to such complex technical innovations as magnetic resonance imaging, the maser clock, and global positioning systems. Along the way, we witness the transformation of science from an endeavor of inspired individuals to a monumental enterprise often requiring the cooperation of hundreds of scientists around the world. Still, any biography of hydrogen has to end with a question: What new surprises await us? 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Tauche ein in die Zukunft der Landwirtschaft. Jetzt.  Free Download Hydraulics in Environmental Engineering by Aleksandar Mratinkovic English | January 1, 2017 | ISBN: 1680955101 | PDF | 14 Mb Provides a hydraulic discussion of some of the key environmental issues.  Free Download Hydraulic Fracturing and Microseismicity for Applications of Co2 Storage: The Role of Rock Properties and Fluid Viscosity English | 2025 | ISBN: 036760843X | 229 pages | True PDF | 31.72 MB Hydraulic fracturing (HF) has become essential for extracting oil and gas from unconventional reservoirs and heat energy from hot dry rock masses. However, a paradox remains in the fracturing mode of HF: stress conditions predicted by elasticity theory suggest tensile fracturing, while shear fracturing is dominant in HF-related microseismicity (MS). This book resolves this paradox by reviewing the results of various laboratory and small-scale field experiments conducted by the author over nearly 40 years.  Free Download Philip J. Birtles - Hurricane: The Illustrated History Patrick Stephens Ltd | 2002 | ISBN: 1852606045 | English | 280 pages | PDF | 162.67 MB In this fully illustrated history, the design, development and production of Sudney Camm's war-winning aircraft are described in detail, including particulars of its construction. The widely varied operational roles during the Second World War, both at home and overseas, are examined, and reveal how the Hurricane rose to each new challenge with which it was presented. The book concludes with a look at the RAF's Battle of Britain Memorial Flight and a review of surviving examples of the Hurricane production figures, production variants, and operational service with all RAF and Royal Navy squadrons and units. This in-depth history of an all-time classic combat aircraft, will appeal to all with an interest in military aviation and the Second World War.  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Kayleigh Garthwaite travelled across Britain, North America and Europe, working with food banks, co-ops, urban farms and food justice organisations. She documents the limitations of these programs, and how institutionalising charitable food aid absolves governments of their responsibility to ensure that people have a right to food. As hunger and inequality continue to rise within advanced capitalist countries, this issue is more urgent than ever. Kayleigh Garthwaite proposes radical key policies for governments and explores alternative community-led responses grounded in solidarity, not charity, to end the need for food aid before the indignity of food banks becomes completely normalised.  Free Download Hume's Skeptical Crisis: A Textual Study By Robert J. Fogelin 2009 | 192 Pages | ISBN: 0195387392 | PDF | 1 MB In Hume's Skeptical Crisis Robert Fogelin provides a textual study of the changes in perspective that emerged as Hume pursued his attempt to introduce the experimental method of reasoning into moral subjects--the subtitle of the Treatise of Human of Nature. In the process of giving an account of the operations of the human mind, Hume discovered that the mechanisms that create and sustain our beliefs are deeply unreliable and, in fact, capricious in their operations. Hume's crisis emerged when he recognized that the weaknesses that he ascribed to the operations of the human mind apply with equal force to the operations of his own mind. How, he asked himself, could he justify pursuing profoundly difficult investigations employing mental faculties that were manifestly not up to the task? His response was to trim back the ambitious program announced at the start of the Treatise. Hume returned to this topic in the opening section of the Enquiry Concerning Human Understanding, where, in a more circumspect mood, he weighed the reasons for and against pursuing what he calls abstruse philosophy. Given our limited capacities and the complexities of the subject, what, he asked, are the chances of success in pursing abstruse philosophical investigations? Hume answered that we could expect at least modest success by adopting the stance of a mitigated skeptic, where one cautiously examines only those topics suitable to our limited mental capacities. Hume held that this standpoint could be attained by counter-balancing radical Pyrrhonian doubt on one side with our non-rational instincts to believe on the other side. As a result, Hume's initial attempt to produce a "compleat system of the sciences" was transformed into "reflections of common life, methodized and corrected." |
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