Libros de ciencias, página 130 de 2356

For junior/senior-level electricity and magnetism courses.This book is known for its clear, concise, and accessible coverage of standard topics in a logical and pedagogically sound order. The highly polished Fourth Edition features a clear, easy-to-understand treatment of the fundamentals of electromagnetic theory, providing a sound platform for the exploration of related applications (AC circuits, antennas, transmission lines, plasmas, optics, etc.). Its lean and focused approach employs numerous new examples and problems. Features The book features a friendly, informal style.Focuses clearly on basic electromagnetic theory, providing a sound platform for future exploration of related applications (such as AC circuits, antennas, transmission lines, plasmas, optics, etc.). A large collection of problems includes short, highly-focused problems that are placed immediately following the relevant text section while longer/more broadly-based problems are at the end of the chapter. Features a more extensive coverage of radiation theory than most texts at this level. Zum Seitenanfang New to this Edition Edits to the entire text have clarified arguments and eliminated ambiguities. New problems and new worked examples appear throughout, while selected unsuccessful ones have been eliminated. All 450 figures have been reviewed for accuracy and updated where necessary. A new section on magnetic work helps to eliminate teachers misconception that magnetic forces do not work.The new section fully explores the actual mechanism in cases where magnetic forces are actually working. Erroneous passages have been corrected. In particular, misleading copy (specifically the treatment of hidden momentum) has been fixed. Citations of recent literature appear throughout for those who wish to pursue a particular topic in greater depth. This literature helps reinforce the point that electrodynamics is a vibrant and dynamic field, even after 150 years.

Combustion, the process of burning, is defined as a chemical reaction between a combustible reactant (the fuel) and an oxidizing agent (such as air) in order to produce heat and in most cases light while new chemical species (e.g., flue gas components) are formed. This book covers a gap on the market by providing a concise introduction to combustion. Most of the other books currently available are targeted towards the experienced users and contain too many details and/or contain knowledge at a fairly high level. This book provides a brief and clear overview of the combustion basics, suitable for beginners and then focuses on practical aspects, rather than theory, illustrated by a number of industrial applications as examples. The content is aimed to provide a general understanding of the various concepts, techniques and equipment for students at all level as well as practitioners with little or no prior experience in the field. The authors are all international experts in the field of combustion technology and adopt here a clear didactic style with many practical examples to cover the most common solid, liquid and gaseous fuels. The associated environmental impacts are also discussed so that readers can develop an understanding of the major issues and the options available for more sustainable combustion processes. With a foreword by Katharina Kohse-Hoinghaus

El mar nos rodea. Nos da vida, nos proporciona el aire que respiramos y la comida que ingerimos. Es el origen de nuestra existencia y el que transporta nuestro comercio. Representa el hogar y la migracion, es cambio incesante y presencia constante. Ocupa dos terceras partes de nuestro planeta. Y a pesar de estar presente en nuestras vidas diarias, apenas le damos importancia.En El mar interior, Philip Hoare nos propone redescubrir el mar, sus islas, aves y bestias. Nos situa en la costa sur donde crecio, un lugar de recuerdos familiares donde la soledad todavia perdura y el oceano proporciona una via de escape. Desde alli viaja al otro extremo del mundo, desde la isla de Wight a las Azores, desde Sri Lanka a Tasmania y Nueva Zelanda, en busca de encuentros con animales y personas la contraposicion de lo salvaje y lo civilizado, lo vivo y lo extinguido. Navegando entre la historia humana y natural, entre la ciencia y el mito, Hoare se cuestiona que significan sus historias para nosotros ahora, en el siglo veintiuno, cuando el mar nunca ha sido importante para nuestro presente, pasado o futuro. Por el camino conoceremos a personajes espectaculares, desde cientificos y artistas excentricos hasta guerreros tatuados, pasando por cuervos, ballenas y bizarras criaturas que podrian, o no, haberse extinguido. En parte memoir, en parte guia de viajes fantastica, El mar interior nos acompaña en un asombroso viaje de descubrimiento, repleta de asombrosas historias sobre la fe y el miedo, la tierra y la destruccion, la mortalidad y la belleza. Pero sobre todo es una historia sobre la naturaleza y el mar que todos llevamos dentro.