A proposta deste livro é mostrar os princípios da Física associados à metodologia de exame de imagem conhecida com Ressonância Magnética Nuclear. Essa modalidade de exame tem se popularizado, ao long

Há algum tempo as discussões a respeito do sistema tributário brasileiro e da necessidade de sua reformulação fazem parte da agenda de debates de toda a sociedade. No entanto, tal questão parece ter

In "A-B-C of Electricity," Wm. H. Meadowcroft presents a comprehensive exploration of electrical principles, seamlessly blending technical exposition with accessible language. The book serves as an introductory guide, aimed at demystifying the complexities of electricity for a lay audience while maintaining rigorous scholarly integrity. Meadowcroft employs a systematic approach, breaking down concepts into manageable sections, supported by illustrative diagrams and practical examples. This work emerges from the context of the early 20th century, a period marked by rapid technological advancement, capturing the zeitgeist of increasing public interest in scientific literacy and industrial innovation. Wm. H. Meadowcroft was a notable educator and engineer, whose passion for pedagogy informed his writing style. His extensive background in electrical engineering and commitment to teaching likely inspired him to create a resource that empowers readers with foundational knowledge. This book reflects his belief in the importance of understanding electricitys role in daily life, advocating for informed engagement with technology in the modern world. I highly recommend "A-B-C of Electricity" to both students and curious laypersons eager to grasp the essentials of this ubiquitous force. Meadowcrofts clear explanations and engaging format make it an invaluable resource for anyone wishing to deepen their understanding of electricity, illuminating both the science and its applications.

Para resolver problemas prácticos se requiere una fundamentación teórica sólida y todo problema de ingeniería es uno de economía. En este libro se profundiza en las respuestas a temas tan cruciales en el Analisis de Sistemas de Potencia tales como: (a) su representacion circuital (valores en tanto por uno); (b) los metodos numericos que se aplican para hallar su respuesta bajo condiciones balanceadas (flujos de potencia); (c) algoritmos eficientes para estudios de corto-circuito y (d) potencia de corto-circuito. Para cada tema se trata en detalle su justificacion y derivacion y se incluye un ejemplo ilustrativo. Logicamente es obligada una discusion comparativa de las ventajas e inconvenientes de cada metodo. Mediante la inclusion de apendices se busca que sea de interes tanto para los ya iniciados como para los principiantes aunque se sabe que el Analisis de Sistemas de Potencia es una aplicacion de la Teoria de Circuitos, los Metodos Numericos y del Algebra Lineal al estudio del comportamiento de una interconexion de aparatos reales tales como transformadores, sistemas de transmision y generadores. Se describen inicialmente los metodos clasicos que aunque en desuso enriquecen conceptualmente (es decir, como NO se hacen las cosas), y en una segunda etapa los metodos modernos. Por esta razon se incluyen temas como: (i) Formacion de la Matriz Admitancia de Nodos y su aplicacion a estudios de corto circuito; (ii) Factorizacion Triangular simple ([A] =[L][D][U]), con estrategia de pivote ([A]=[P][L][U]) e inversa ([A] 1); (iii) Formacion de la Matriz Impedancia de Nodos Dispersa y (iv) Metodos de Vector Disperso.

El libro muestra la capacidad de las redes neuronales y en concreto de los mapas auto-organizados de Teuvo Kohonen, los conocidos como Self-Organizing Maps (SOM) para clasificar consumidores eléctricos a partir de historicos de datos reales de consumo. El espectro de datos de entrada esta formado por mas de 20 tipos de consumidores distintos de una misma region geografica. La red neuronal SOM ha demostrado ser una eficaz herramienta para segmentar y clasificar consumidores a partir de sus perfiles de carga diarios y ha permitido identificar nuevos consumidores, no utilizados antes para entrenar el mapa. Esta identificacion posterior y la asignacion automatica a un segmento o cluster de clientes permiten asociar nuevos consumidores a patrones de consumo previamente clasificados. Este procedimiento permitiria a compañias comercializadoras y a clientes conocer a partir de los datos de consumo diario a que cluster de consumidores pertenece y elegir tarifas especificas en funcion del patron de consumo de este grupo.

As luzes de Hessdalen são fenômenos luminosos, com diferentes formas geométricas, geralmente globular, não totalmente explicados pela ciência atual, observadas periodicamente em um trecho de 12 quilô

In "Bill Nyes Sparks," the renowned science communicator Bill Nye blends his signature wit with a deep exploration of the scientific method, fostering curiosity among readers of all ages. Through a series of engaging anecdotes, experiments, and thought-provoking questions, Nye illuminates the often-overlooked connections between scientific principles and everyday life. The book is adorned with vibrant illustrations, enhancing its accessibility and appeal, while promoting critical thinking and a sense of wonder about the universe. In the context of contemporary environmental challenges and technological advancements, Nye emphasizes the importance of scientific literacy as a means for informed decision-making. Bill Nye, affectionately known as "The Science Guy," has spent decades championing science education and advocacy, inspired by a lifelong passion for understanding the natural world. His background in mechanical engineering, combined with his experience in television and education, has equipped him with a unique perspective on how to communicate complex scientific concepts to a diverse audience. Through this book, Nye draws upon his wealth of experience to cultivate a new generation of inquisitive minds ready to tackle the pressing issues of our time. "Bill Nyes Sparks" is an essential read for anyone eager to ignite their curiosity and deepen their understanding of science. Whether you are a student, a teacher, or simply a lover of knowledge, this book provides a fresh perspective on the wonders of science. Nyes contagious enthusiasm and approachable style will inspire readers to think critically and embrace the joy of discovery.

En esta obra, la selección de los temas se ha hecho dentro del contexto formal de procurar desarrollar la teoría clásica de los campos electromagnéticos, bajo un punto de vista contemporáneo, lo cual implica la mayor dedicacion a la teoria macroscopica, dejando los modelos microscopicos necesarios para la comprension del comportamiento macroscopico.

In "Cathode Rays," Joseph John Thomson provides a groundbreaking exploration of the properties and behavior of cathode rays, laying the foundation for modern atomic physics. Employing a detailed and methodical literary style, Thomson integrates experimental data with theoretical analysis to unravel the mysteries of these elusive streams of particles. The book is set against the backdrop of late-19th century science, a period ripe with revolutionary discoveries that challenged existing notions about matter and electricity. Through meticulously crafted prose, Thomson elucidates complex concepts, making them accessible to his contemporaries and future scholars alike. Joseph John Thomson, a preeminent physicist and Nobel laureate, was motivated by a profound curiosity and a desire to demystify the fundamental nature of matter. His work in the Cavendish Laboratory at Cambridge University provided him with the unique perspective and rigorous training necessary to investigate the intricacies of cathode rays. Thomsons pioneering research was instrumental in the eventual discovery of the electron, reflecting his significant contributions to both the field of physics and the scientific community at large. "Cathode Rays" is essential reading for anyone interested in the evolution of atomic theory and the development of experimental physics. Thomsons insightful observations and astute interpretations not only reveal the underlying principles of cathode rays but also provide a compelling narrative of scientific inquiry during a transformative era. This seminal work is a must-have for scholars of science, enthusiasts of physics, and anyone who wishes to grasp the foundational concepts that have shaped contemporary understanding of atomic structure.In this enriched edition, we have carefully created added value for your reading experience:- A succinct Introduction situates the works timeless appeal and themes.- The Synopsis outlines the central plot, highlighting key developments without spoiling critical twists.- A detailed Historical Context immerses you in the eras events and influences that shaped the writing.- An Author Biography reveals milestones in the authors life, illuminating the personal insights behind the text.- A thorough Analysis dissects symbols, motifs, and character arcs to unearth underlying meanings.- Reflection questions prompt you to engage personally with the works messages, connecting them to modern life.- Handpicked Memorable Quotes shine a spotlight on moments of literary brilliance.- Interactive footnotes clarify unusual references, historical allusions, and archaic phrases for an effortless, more informed read.

Was ware, wenn Strom nicht einfach nur durch Leitungen fliet, sondern von wilden, chaotischen Stromhexen angetrieben wird? In diesem Buch entlarvst du ihre Tricks und erfahrst, wie Spannung, Strom und Widerstand wirklich funktionieren. Von elektrischen Einwegtunneln uber magische Schleusen bis hin zu tanzenden Hexen im Transformator: dieses Buch macht Elektrotechnik verstandlich, spannend und garantiert unvergesslich! Perfekt fur alle, die sich fragen: Wie funktioniert Strom eigentlich wirklich?

Neste pequeno e potente livro, o visionário Nikola Tesla nos conduz em um mergulho em sua mente brilhante e apresenta sua visão extraordinária sobre as possibilidades de geração e uso da energia. Com

Agnosticism and the Religion of Humanity, Last Words about.By Herbert SpencerNineteenth Century America, A Word More About.By Matthew ArnoldNineteenth Century American Audience, The.By Henry IrvingFortnightly Review Ancient Organs of Public Opinion.By Prof. R. C. Jebb.Fortnightly Review Arnolds Lay Sermon, Mr.Spectator Art, A Few Notes on Persian.Chamberss Journal Authors as Suppressors of their Books.By W. H. Olding, LL.B.Gentlemans Magazine Automatic Writing, or the Rationale of Planchette.By Frederick W. H. MyersContemporary Review Bank of England, The.By Henry MayFortnightly Review Behind the Scenes.By F. C. BurnandFortnightly Review Big AnimalsCornhill Magazine Bismarcks Character, PrinceTemple Bar Blackstone.By G. P. MacdonellMacmillans Magazine Bygone Celebrities and Literary Recollections.By Charles MackayGentlemans Magazine Bygone Celebrities and Literary Recollections.By Charles Mackay, LL.D.Gentlemans Magazine Camorra, The.Saturday Review Coleridge as a Spiritual Thinker.By Principal Tulloch.Fortnightly Review Comparative Study of Ghost Stories, The.By Andrew LangNineteenth Century Comment on Christmas, A.By Matthew ArnoldContemporary Review Concerning Eyes.By William H. HudsonGentlemans Magazine Corneille, Le Bonhomme.By Henry M. TrollopeGentlemans Magazine Curiosities of the Bank of EnglandChamberss Journal Day of Storm, AThe Spectator De BananaCornhill Magazine Della Crusca and Anna Matilda: An Episode in English Literature.By Armine T. KentNational Review Democratic Victory in America, The.By William Henry HurlburtNineteenth Century Dickens at Home, Charles.With Especial Reference to His Relations with Children.By his eldest daughterCornhill Magazine Dress, How Should We? The New German Theories on Clothing.By Dora de BlaquiereGood Words Duelling, French.By H. R. HaweisBelgravia Economic Effect of War.

Esta segunda edición del tomo II del Curso de Física de Berkeley Electricidad y Magnetismo se ha hecho teniendo en cuenta tres amplios objetivos. Primero, hemos intentado hacer el texto más claro en muchos puntos. Un segundo objetivo era hacer el libro practicamente independiente del resto de los tomos del Curso de Fisica de Berkeley.Una tercera necesidad era modernizar el tratamiento de ciertos temas como la conduccion electrica, la Fisica de los semiconductores homogeneos, la Fisica de las particulas, etc. Tambien en los Apendices se han introducido temas especiales y de los 300 problemas que contiene este volumen, la mitad son nuevos.

In "Electricity and Magnetism," Elisha Gray presents a comprehensive exploration of the fundamental principles governing these two intertwined forces of nature. The book delves into the scientific laws and phenomena related to electricity and magnetism, employing a didactic style that merges rigorous analytical discourse with practical applications. Grays work is situated within the context of the late 19th-century scientific revolution, a time when the understanding of electromagnetism was rapidly evolving and influencing the burgeoning field of electrical engineering. Elisha Gray, a contemporary of Thomas Edison and Alexander Graham Bell, was an influential inventor and a pioneer in the realm of electrical communication. Grays background in both academia and practical invention, coupled with his fervent curiosity, motivated him to contribute extensively to the understanding of electrical concepts. His innovations, particularly in telegraphy, have cemented his legacy as a key figure in the advancement of electrical technology, ultimately leading him to pen this significant text on electricity and magnetism. I highly recommend "Electricity and Magnetism" to anyone interested in the foundational principles of electrical science and engineering. Whether you are a student, a professional in the field, or simply a curious reader, this book provides invaluable insights into the technological landscape that has shaped modern society. Grays profound knowledge paired with his clear exposition makes this work not only enlightening but also essential for understanding the intricacies of electromagnetism.

In "Electricity and Magnetism," Elisha Gray presents a comprehensive exploration of the fundamental principles governing these two intertwined forces. The book employs a meticulous blend of theoretical exposition and practical experimentation, emphasizing clarity and accessibility for its readers. Grays writing resonates with the scientific spirit of the late 19th century, a period characterized by rapid technological advancement and an insatiable curiosity about the natural world. His work reflects the eras transition from classical physics to more complex understandings of electromagnetism, underpinned by concise illustrations and empirical evidence that solidify his arguments. Elisha Gray, an instrumental figure in the history of electrical engineering, was driven by a deep fascination with the possibilities of electric communication and technology. His rivalry with Alexander Graham Bell and his contributions to the development of the telephone highlight the innovative spirit of his career. Grays insights were informed by his extensive background in both practical invention and theoretical science, which makes "Electricity and Magnetism" a remarkable synthesis of historical context and scientific discovery. This book is essential for anyone interested in the foundations of electromagnetic theory and its applications. Grays clear exposition and rich historical context make it an invaluable resource for students, educators, and enthusiasts alike, providing not only knowledge but also inspiration for future innovations in the field.In this enriched edition, we have carefully created added value for your reading experience:- A succinct Introduction situates the works timeless appeal and themes.- The Synopsis outlines the central plot, highlighting key developments without spoiling critical twists.- A detailed Historical Context immerses you in the eras events and influences that shaped the writing.- An Author Biography reveals milestones in the authors life, illuminating the personal insights behind the text.- A thorough Analysis dissects symbols, motifs, and character arcs to unearth underlying meanings.- Reflection questions prompt you to engage personally with the works messages, connecting them to modern life.- Handpicked Memorable Quotes shine a spotlight on moments of literary brilliance.- Interactive footnotes clarify unusual references, historical allusions, and archaic phrases for an effortless, more informed read.

Este libro trata del cálculo fácil de electroimanes de una manera práctica, tanto monofásicos, en C.A. y C.C, como trifásicos, y nace como consecuencia de la nula bibliografía específica de este tema, la mayoria de los libros tecnicos que existen en el mercado tratan el tema de una manera tangencial. En esta publicacion, se abordan en profundidad los calculos de electroimanes de una manera facil y sencilla teniendo en cuenta todos los parametros que intervienen en ellos, aportando soluciones ideales a aplicaciones concretas. El capitulo 1 del libro esta dedicado a las Nociones basicas de electromagnetismo, abordando las generalidades de los electroimanes, circuitos magneticos, amperivueltas, bobinas, imantacion, desimantacion, aplicaciones, ensayos, factor de utilizacion, espira de sombra, normativa, etc. Los capitulos 2, 3, 4 y 5 estan dedicados a los Calculos de electroimanes monofasicos de herradura, acorazados, de campana y de corredera, respectivamente, en todos ellos se incluye un ejemplo practico de calculo y comprobacion de electroiman. El capitulo 6 esta dedicado al Calculo de electroimanes trifasicos incluyendo tambien un ejemplo practico de calculo y comprobacion de electroiman trifasico. El libro esta recomendado a los tecnicos de la industria y, en especial, a ingenieros de proyectos, jefes de mantenimiento, tecnicos de talleres electromecanicos, profesores de enseñanzas tecnicas, alumnos de ingenieria y de ciclos formativos y, en general, a todos aquellos que le interese la electricidad, sera para ellos un buen manual.

Los experimentos de Coulomb revelaron que los campos eléctricos se deben a cargas eléctricas en reposo o en movimiento. Posteriores estudios de Oersted y Ampère mostraron que los campos magnéticos se

En la física básica, el electromagnetismo tiene cierta posición de privilegio: las interacciones electromagnéticas rigen la dinámica del entorno humano inmediato (físico, químico y biológico). Es por esa razon que los conocimientos basicos sobre esta materia ofrecen a los estudiantes una incomparable vision cuantitativa de los procesos fundamentales que dominan nuestra existencia. Esta obra se estructura en cinco capitulos a traves de los cuales se presentan y explican leyes fundamentales y sus aplicaciones elementales; se busca fortalecer la comprension de conceptos imprescindibles y se abordan temas teoricos especificos. Por ultimo, no esta ausente el planteo de ejercicios practicos y problemas.

Curso de ocho episodios para aprender las nociones fundamentales del mundo electromagnético. ¿Qué es la electrostática? ¿Cuáles son las características de un campo eléctrico? ¿Cómo se comportan los diferentes tipos de circuitos? ¿Que es la magnetostatica? Estas y otras preguntas encuentran respuestas en este material didactico elaborado por la profesora Estrada de la catedra de Electromagnetismo y Optica A del Departamento de Fisica de la UBA. Contiene actividades para trabajar los conceptos, ejercicios guiados para practicar y dos autoevaluaciones para fijar lo aprendido.

Este livro é a compilação de mais de uma década de pesquisa em eletromagnetismo aplicado e práticas de docência para cursos de Engenharia pelo Dr. Alexandre Maniçoba de Oliveira, professor D303 do In