Relaxation processes in micromagnetics / / Harry Suhl

• Record Nr.: UNINA9910962304903321
• Autore: Suhl Harry
• Pubbl/distr/stampa: Oxford ; ; New York, : Oxford University Press, 2007
• ISBN: 9786611160142; 9780191523670; 0191523674; 9780191713545; 0191713546; 9781281160140; 1281160148; 9781435620797; 1435620798
• Edizione: [1st ed.]
• Descrizione fisica: xviii, 190 p. : ill
• Collana: International series of monographs on physics ; ; 133
• Disciplina: 538/.3
• Soggetti: Magnetization; Equations of motion; Magnetic recorders and recording
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di bibliografia: Includes bibliographical references (p. 185-188) and index.
• Nota di contenuto: Intro -- Contents -- Preface -- Notations and conventions -- 1 The Classical Magnetization Field -- 1.1 Introduction -- 1.2 Equations of motion -- 1.2.1 Damping -- 1.3 Approaching the Curie temperature -- 2 Small motions of the Magnetization -- 2.1 Introduction -- 2.2 Models of small motions -- 2.2.1 Distributive damping -- 2.2.2 Instabilities and spin wave condensates -- 3 Intrinsic Damping -- 3.1 Introduction -- 3.2 Magnetostrictive coupling -- 3.2.1 Small samples -- 3.2.2 Large, homogeneous samples -- 3.3 Loss torque in magnetic metals -- 3.3.1 Eddy current damping -- 3.3.2 Direct coupling of conduction electrons to the magnetization field -- 3.4 Fluctuations in medium properties -- 3.5 Relaxation due to weakly coupled magnetic impurities -- 3.5.1 Slow relaxation -- 3.5.2 Corrections to the adiabatic limit -- 3.6 Appendix 3A. Inclusion of displacement current in ; Section 3.3.1 -- 4 Fluctuations -- 4.1 Introduction -- 4.2 Fluctuation-dissipation theorem -- 4.3 Langevin equation, and generalized Langevin equation -- 4.4 Fokker-Planck equation-cartesians -- 4.4.1 Fokker-Planck equation in polar angles -- 4.4.2 Fokker-Planck equation in the absence of well-defined canonical variables -- 5 Magnetization Reversal in a Very Dilute Array of Small Particles -- 5.1 Introduction -- 5.2 General observations -- 5.3 Reversal in 2d -- 5.3.1 Reversal in the long time limit -- 5.3.2 Intermediate time scales -- 5.3.3 Applied field and anisotropy axis misaligned -- 5.3.4 Relation to first-passage type theories -- 5.4 Rotation in 3d -- 6 Magnetization Reversal in Arrays of Particles and Continuous Media -- 6.1 Introduction -- 6.2 Relaxation due to magnetic moment interaction in a sparse medium -- 6.2.1 Equations of motion for dipolar interaction -- 6.2.2 A single pair -- 6.3 More dense arrays of many interacting particles -- 6.3.1 The Arnold web.; 6.3.2 Relevance to magnetic relaxation and reversal -- 6.3.3 Effective single-variable relaxation from causes other than chaos -- 6.4 Magnetization reversal and the magnetization process in large, dense systems -- 6.4.1 Simple model of magnetization reversal by domain wall motion -- 6.4.2 Motion of a Bloch domain wall -- 6.4.3 Magnetostatics and the magnetization process. Pre-existing domain walls -- 6.5 Appendix 6A: Vortex solutions in cylinder and disc: stability considerations -- References -- Subject Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- K -- L -- M -- N -- P -- R -- S -- T -- V -- W -- Z.
• Sommario/riassunto: This book throws some light on poorly understood aspects of the motion of magnetization in magnetic solids, particularly the effects of dissipative mechanisms. Aside from its practical aspects (such as magnetic recording), it addresses readers interested in the basic physics of nonlinear phenomena.

Food for Dissent : Natural Foods and the Consumer Counterculture since the 1960s / / Maria McGrath

• Record Nr.: UNINA9911046604203321
• Autore: McGrath Maria <1965->
• Pubbl/distr/stampa: Amherst : , : University of Massachusetts, , [2019]; Baltimore, Md. : , : Project MUSE, , 2021; ©[2019]
• ISBN: 1-61376-670-X
• Descrizione fisica: 1 online resource (xvi, 239 pages) : illustrations
• Disciplina: 394.1209730904
• Soggetti: Verbraucherverhalten; Protest; Nahrung; Lebensmittelverbrauch; Gegenkultur; Ethik; Ernährungsgewohnheit; Natural foods industry; Natural foods; Food habits; Consumer movements; Natural foods industry - United States - History - 20th century; Consumer movements - United States - History - 20th century; Natural foods - United States - History - 20th century; Food habits - United States - History - 20th century; History; Electronic books.; United States
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Revision of author's thesis (Ph. D.)--Lehigh University. 2006.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: "More than just cheap cheese" : community, class, and consumerism in countercultural food co-ops -- Recipes for a new world : vegetarian ; opposition in seventies natural foods cookbooks -- "Organic style" : Rodale Press and mass mediated organics -- Dr. Andrew Weil and the post-sixties promises of food and consciousness -- Natural foods conservatism : from hippie evangelism to whole foods.
• Sommario/riassunto: In the 1960s and early 1970s, countercultural rebels decided that, rather than confront the system, they would create the world they wanted. The natural foods movement grew out of this contrarian spirit. Through a politics of principled shopping, eating, and entrepreneurship, food revolutionaries dissented from corporate capitalism and mainstream America. In Food for Dissent, Maria McGrath traces the growth of the natural foods movement from its countercultural fringe beginning to its twenty-first-century "food revolution" ascendance, focusing on popular natural foods touchstones--vegetarian cookbooks, food co-ops, and health advocates. Guided by an ideology of ethical consumption, these institutions and actors spread the movement's oppositionality and transformed America's foodscape, at least for some. Yet this strategy proved an uncertain instrument for the advancement of social justice, environmental defense, and anti-corporatism. The case studies explored in Food for Dissent indicate the limits of using conscientious eating, shopping, and selling as tools for civic activism.

The unity of science / / Rudolf Carnap ; translated with an introduction by M. Black

• Record Nr.: UNINA9910966980803321
• Autore: Carnap Rudolf <1891-1970., >
• Pubbl/distr/stampa: Abingdon, Oxon ; ; New York, N.Y. : , : Routledge, , 2011
• ISBN: 1-136-65428-3; 0-203-80629-8; 1-136-65429-1
• Descrizione fisica: 1 online resource (106 p.)
• Collana: Routledge revivals
• Altri autori (Persone): BlackMax <1909-1988.>
• Disciplina: 160
• Soggetti: Science - Philosophy; Science; Logical positivism
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: "First published in English in 1934 by Kegan Paul, Trench, Trubner & Co. Ltd."--T.p. verso.; The article which has been translated for this book originally "appeared in Erkenntnis (Volume II, 1932, pp. 432-465) under the title 'Die physikalische sprache als Universalprache der Wissenschaft,' and has been revised, by the author."--p. 10.
• Nota di bibliografia: Includes bibliographical references.
• Nota di contenuto: 1. The heterogeneity of science -- 2. Languages -- 3. Protocol language -- 4. The physical language as an intersubjective language -- 5. The physical language as a universal language -- 6. Protocol language as a part of physical language -- 7. Unified science in physical language.
• Sommario/riassunto: As a leading member of the Vienna Circle, Rudolph Carnap's aim was to bring about a ""unified science"" by applying a method of logical analysis to the empirical data of all the sciences. This work, first published in English in 1934, endeavors to work out a way in which the observation statements required for verification are not private to the observer. The work shows the strong influence of Wittgenstein, Russell, and Frege.