Elektricitet och magnetism

Skillnaden mellan den elektromagnetiska miljö som rådde i början av 1800-talet innan elektricitet och trådlös teknik började användas är som att jämföra mörkret en molnig natt med direkt solljus. Hur har samhället hanterat det när vi samtidigt vet att elektricitet är en avgörande del i kroppens funktioner? EMF handboken tar upp viktiga händelser som Sovjetunionens bestrålning av USA:s ambassad i Moskva med mikrovågor, Världshälsoorganisationens projekt att övertala länder som har lägre gränsvärden att höja dessa, debatten i EU inför beslutet att rekommendera de gränsvärden som vi därefter införde i Sverige. Utgångspunkter för riskutvärderingar som är avgörande för resultatet beskrivs. På nationell nivå har Sverige och Stockholm fått tjäna som exempel. Boken kan ses som en fallstudie hur samhällets hälsoskydd har fungerat. Resultatet är att en tredjedel av befolkningen uppger att de har mer eller mindre besvär de sätter i samband med konstgjorda elektromagnetiska fält.

Elkrafthandboken är ett verk i tre delar som behandlar elproduktion, distribution, elanvändning, mätteknik och elmaskiner. Den är ett referensverk inom det elkrafttekniska området och ett lämpligt utbildningsmaterial på högskolenivå och annan högre teknisk utbildning. De tre delarna är: Elmaskiner och elektriska drivsystem, Elkraftsystem 1, Elkraftsystem 2.

I Elmaskiner och elektriska drivsystem behandlas bland annat transformatorer, synkron- och asynkronmaskiner, likströmsmaskiner, andra maskintyper, strömriktare och elektriska drivsystem.

Nyheter för denna reviderade upplaga inkluderar:

Genomräknade dimensioneringsexempel i kapitlen. Övningsuppgifter i varje kapitel med svar och anvisningar i slutet av boken. Ett uppdaterat och utökat kapitel om standarder och EU-direktiv. Uppdaterade, kompletterade och utökade kapitel om transformatorer", strömriktare och elektriska drivsystem. Ny modern formgivning och fler foton.

Relaterad information: Elkrafthandboken - elkraftsystem 1

Relaterad information: Elkrafthandboken - elkraftsystem 2

Om författarnaAlf Alfredsson är civilingenjör inom elektroteknik och har under många år arbetat med produktutveckling och företagsanpassad utbildning på elkraftområdet. Han är författare till mer än ett dussin böcker. Karl Axel Jacobsson är ingenjör med elkraftteknisk lärarutbildning från KTH. Han har tidigare verkat inom gymnasie- och högskolan och även som konsult inom industrin. Mångårig läroboks- och fackboksförfattare.

In this new edition of the standard undergraduate textbook on electricity and magnetism, David Griffiths provides expanded discussions on topics such as the nature of field lines, the crystal ambiguity, eddy currents, and the Thomson kink model. Ideal for junior and senior undergraduate students from physics and electrical engineering, the book now includes many new examples and problems, including numerical applications (in Mathematica) to reflect the increasing importance of computational techniques in contemporary physics. Many figures have been redrawn, while updated references to recent research articles not only emphasize that new discoveries are constantly made in this field, but also help to expand readers' understanding of the topic and of its importance in current physics research.

Electricity has shaped the modern world. But how has it affected our health and environment?Over the last 220 years, society has evolved a universal belief that electricity is ‘safe’ for humanity and the planet. Scientist and journalist Arthur Firstenberg disrupts this conviction by telling the story of electricity in a way it has never been told before - from an environmental point of view - by detailing the effects that this fundamental societal building block has had on our health and our planet.In The Invisible Rainbow, Firstenberg traces the history of electricity from the early eighteenth century to the present, making a compelling case that many environmental problems, as well as the major diseases of industrialised civilisation - heart disease, diabetes, and cancer - are related to electrical pollution.

Elkrafthandboken är ett verk i tre delar som behandlar elproduktion, distribution, elanvändning, mätteknik och elmaskiner. Den är ett referensverk inom det elkrafttekniska området och ett lämpligt utbildningsmaterial på högskolenivå och annan högre teknisk utbildning. De tre delarna är: Elmaskiner och elektriska drivsystem, Elkraftsystem 1, Elkraftsystem 2.

Elkraftsystem 2 omfattar bland annat elkraftanvändning, framtagning av nyanläggning, systembyggnad och dokumentation, driftsäkerhet, elkraftekonomi, elkraftberäkningar, EMC, mätteknik, provning och simulering, kraftsystem i IT-åldern, utvecklingstendenser, formler och data.

I samband med att revideringen av Elkrafthandbokens tre delar påbörjades, konsulterades högskolor och universitet med teknisk utbildning. Man såg Elkrafthandboken som ett viktigt komplement till engelskspråkig och mer teoretisk litteratur. När det gällde önskemål om ändringar så påpekades just att IT, vindkraft, driftsäkerhet och smarta elnät skulle behandlas mer utförligt.Den nya Elkrafthandboken har därför uppdaterats inom alla avsnitt för att spegla utvecklingen och önskemålen enligt ovan.

I Elkraftsystem 2 syns bland annat följande nyheter i denna reviderade upplaga:

Helt omarbetade kapitel om driftsäkerhet, smarta elnät och utvecklingstendenser. Ett helt nyskrivet kapitel om systemuppbyggnad och dokumentation. Uppdaterade, kompletterade och utökade kapitel om elkraftssanvändning, elkraftsberäkningar, EMC och mätteknik.

Relaterat meterial: Elkrafthandboken - elkraftsystem 1

Relaterat meterial: Elkrafthandboken - Elmaskiner

Om författarnaKarl Axel Jacobsson är ingenjör med elkraftteknisk lärarutbildning från KTH. Han har tidigare verkat inom gymnasie- och högskolan och även som konsult inom industrin. Mångårig läroboks- och fackboksförfattare.

Stig Lidström är högskoleingenjör inom elkraft med lång erfarenhet från Vattenfall avseende driftledning, allmänna kontrollanläggningsfrågor, igångkörning, reläskyddsplanering, störningsanalyser och nätutredningar. Han har även flera års erfarenhet från ABB GA Products, teknisk applikationssupport inom reläskydd för HV- och EHV-system, teknisk marknadsföring samt utbildning. Han är medlem i Cigré där han har medverkat i ett antal internationella arbetsgrupper.

Carl Öhlén är civilingenjör inom elkraft från KTH och författare i Elkrafthandboken sedan första upplagan. Han har 40 års internationell erfarenhet inom elkraftbranschen genom arbete för Vattenfall, ABB, Programma, Ripasso Energy och STRI . Under senare år har han för Energimyndigheten varit aktiv inom IEA/ISGAN samt som expert för EC DG-ENERGY i Bryssel.

Per Norberg är civilingenjör och började på Sydkraft. Han har därefter arbetat inom Vattenfalls nätverksamhet i olika tekniska roller. Han är sedan 2009 adjungerad professor i elkraftteknik vid Chalmers tekniska högskola.

"The text provides an interesting history of previous and anticipated accomplishments, ending with a chapter on the relationship of fusion power to nuclear weaponry. They conclude on an optimistic note, well worth being understood by the general public."CHOICEThe gap between the state of fusion energy research and public understanding is vast. In an entertaining and engaging narrative, this popular science book gives readers the basic tools to understand how fusion works, its potential, and contemporary research problems.Written by two young researchers in the field, The Future of Fusion Energy explains how physical laws and the Earth's energy resources motivate the current fusion program — a program that is approaching a critical point. The world's largest science project and biggest ever fusion reactor, ITER, is nearing completion. Its success could trigger a worldwide race to build a power plant, but failure could delay fusion by decades. To these ends, this book details how ITER's results could be used to design an economically competitive power plant as well as some of the many alternative fusion concepts.

A fresh look at electricity and its powerful role in life on EarthWhen we think of electricity, we likely imagine the energy humming inside our home appliances or lighting up our electronic devices—or perhaps we envision the lightning-streaked clouds of a stormy sky. But electricity is more than an external source of power, heat, or illumination. Life at its essence is nothing if not electrical.The story of how we came to understand electricity’s essential role in all life is rooted in our observations of its influences on the body—influences governed by the body’s central nervous system. Spark explains the science of electricity from this fresh, biological perspective. Through vivid tales of scientists and individuals—from Benjamin Franklin to Elon Musk—Timothy Jorgensen shows how our views of electricity and the nervous system evolved in tandem, and how progress in one area enabled advancements in the other. He explains how these developments have allowed us to understand—and replicate—the ways electricity enables the body’s essential functions of sight, hearing, touch, and movement itself.Throughout, Jorgensen examines our fascination with electricity and how it can help or harm us. He explores a broad range of topics and events, including the Nobel Prize–winning discoveries of the electron and neuron, the history of experimentation involving electricity’s effects on the body, and recent breakthroughs in the use of electricity to treat disease.Filled with gripping adventures in scientific exploration, Spark offers an indispensable look at electricity, how it works, and how it animates our lives from within and without.

Following the critically acclaimed An Illustrated History of Electric Lighting (2016), Professor Emeritus Adam Allerhand of Indiana University, USA, is back with yet another masterpiece. Starting from 1300 BC and progressing steadily to the present, this book is the ultimate guide to the history of the science of electricity. It is the result of 15 years of research through a vast and daunting literature which is hard for beginners and experts alike to navigate, bringing together many widely scattered and obscure facts that have hitherto eluded even the most ardent aficionados. There is particular emphasis on practical applications, including electricity for illumination, communication, medicine and industry. For non-specialists with an interest in the subject, fret not, for the text is written with a minimum of technical jargon, and is richly illustrated with over 100 images, many of them created by the author.

A BEST BOOK OF 2023 FOR THE TELEGRAPH, FINANCIAL TIMES, NEW SCIENTIST AND STYLIST A NEXT BIG IDEA CLUB MUST READ 2023Discover the next frontier of scientific understanding: your body's electrome.Every cell in your body - bones, skin, nerves, muscle - has a voltage, like a tiny battery. This bioelectricity is why your brain can send signals to your body, why it develops and how it heals itself.In We Are Electric, award-winning science writer Sally Adee explores the colourful history of bioelectricity and journeys into the remarkable future of the discipline, through today's laboratories where real-world medical applications are being developed.

The story of two brilliant nineteenth-century scientists who discovered the electromagnetic field, laying the groundwork for the amazing technological and theoretical breakthroughs of the twentieth centuryTwo of the boldest and most creative scientists of all time were Michael Faraday (1791-1867) and James Clerk Maxwell (1831-1879). This is the story of how these two men - separated in age by forty years - discovered the existence of the electromagnetic field and devised a radically new theory which overturned the strictly mechanical view of the world that had prevailed since Newton's time.The authors, veteran science writers with special expertise in physics and engineering, have created a lively narrative that interweaves rich biographical detail from each man's life with clear explanations of their scientific accomplishments. Faraday was an autodidact, who overcame class prejudice and a lack of mathematical training to become renowned for his acute powers of experimental observation, technological skills, and prodigious scientific imagination. James Clerk Maxwell was highly regarded as one of the most brilliant mathematical physicists of the age. He made an enormous number of advances in his own right. But when he translated Faraday's ideas into mathematical language, thus creating field theory, this unified framework of electricity, magnetism and light became the basis for much of later, 20th-century physics.Faraday's and Maxwell's collaborative efforts gave rise to many of the technological innovations we take for granted today - from electric power generation to television, and much more. Told with panache, warmth, and clarity, this captivating story of their greatest work - in which each played an equal part - and their inspiring lives will bring new appreciation to these giants of science.

Latest research and applications of analytical models and designs of phased array antennas and systems Phased Array Antennas presents precise analytical models and designs of phased array antennas and systems in a logical and comprehensive manner starting from fundamental principles of phased array radiation. Numerous relevant and practical design examples and detailed derivations of theorems and concepts are included to make the book as self-contained as possible. This new edition includes information on recent developments in the phased array arena published in journals and conference proceedings, a chapter devoted to metamaterial analysis from fundamental principles of electromagnetism, and the most updated phased array structures and beam formers. The book is divided into three sections. The first section is mostly devoted to the development of the Floquet model-based approach for infinite and finite phased arrays. This section begins with an introduction of the traditional approach and its drawbacks. The second section presents applications of the Floquet modal analysis to important phased array structures. The third section covers several important aspects of a phased array design including array tolerance analysis. Phased Array Antennas includes information on sample topics such as: Scan characteristics of a pencil beam array in light of gain, grating lobe, beam-width beam squint, and mitigation of beam-squint issueScan characteristics of array-fed confocal reflectorsThe relationship between a Floquet mode and observable array parameters such as active element pattern, mutual coupling, scan blindnessGeneralized Scattering Matrix (GSM) approach to analyze multilayer array structures, including stacked patches, ring-slot radiators, FSS and screen polarizersFinite array modeling including the edge effects on input match and radiation patternCharacteristics of step and multi-flared horns for enhanced radiation efficiencyFrequency selective surfaces, meander line polarizer screens, printed reflect-array antennas, metamaterial and their fundamental propertiesBeam formers, beam shaping algorithms, array system analysis and array tolerance analysisPhased Array Antennas is an excellent reference for advanced graduate students who are seeking professional careers in antenna and microwave engineering as well as antenna design engineers and technical consultants seeking to understand and apply the latest Floquet model for analyzing practical phased array structures.

This textbook gives a basic introduction to theoretical physics. It deals with mechanics, electrodynamics, theory of relativity, quantum mechanics and statistical physics, thus covering all the standard disciplines of theoretical physics in a single volume. The material is presented in a concise style, enabling the reader to follow the central themes. Various excursions rarely found in other textbooks are designed to give deeper insight into interesting and current topics. A chapter on the mathematical background gives easy access to the other chapters and many exercises are included to support learning. The book is an ideal resource for advanced undergraduate and graduate students seeking to consolidate their knowledge.

The third volume in Leonard Susskind's one-of-a-kind physics series cracks open Einstein's special relativity and field theoryIn the first two books in his wildly popular The Theoretical Minimum series, world-class physicist Leonard Susskind provided a brilliant first course in classical and quantum mechanics, offering readers not an oversimplified introduction, but the real thing - everything you need to start doing physics, and nothing more. Now, thankfully, Susskind and his former student Art Friedman are back, this time to introduce readers to special relativity and classical field theory. At last, waves, forces and particles will be demystified. Using their typical brand of relatively simple maths, enlightening sketches and the same fictional counterparts, Art and Lenny, Special Relativity and Classical Field Theory takes us on an enlightening journey through a world now governed by the laws of special relativity. Starting in their new watering hole, Hermann's Hideaway, with a lesson on relativity, Art and Lenny walk us through the complexities of Einstein's famous theory. Combining rigor with humour, Susskind and Friedman guarantee that Special Relativity and Classical Field Theory will become part of the reader's physics toolbox.

This text introduces the key concepts of superconductivity, superfluidity and Bose-Einstein condensates, three extremely important and rapidly developing fields of research which are closely related intellectually, in spite of their very different physical systems. The topics are developed alongside the necessary mathematical tools and no previous knowledge of quantum many-body theory is necessary.

Elkrafthandboken är ett verk i tre delar som behandlar elproduktion, distribution, elanvändning, mätteknik och elmaskiner. Den är ett referensverk inom det elkrafttekniska området och ett lämpligt utbildningsmaterial på högskolenivå och annan högre teknisk utbildning. De tre delarna är: Elmaskiner och elektriska drivsystem, Elkraftsystem 1, Elkraftsystem 2.

Elkraftsystem 1 behandlar bland annat elsäkerhet, standarder, elproduktionsanläggningar, överföring av växelström och likström, distributionsanläggningar, övervakning och automatisering, drift och underhåll.

I samband med att revideringen av Elkrafthandbokens tre delar påbörjades, konsulterades högskolor och universitet med teknisk utbildning. Man såg Elkrafthandboken som ett viktigt komplement till engelskspråkig och mer teoretisk litteratur. När det gällde önskemål om ändringar så påpekades just att IT, vindkraft, driftsäkerhet och smarta elnät skulle behandlas mer utförligt.

Den nya Elkrafthandboken har därför uppdaterats inom alla avsnitt för att spegla utvecklingen och önskemålen enligt ovan.

I Elkraftsystem 1 syns bland annat följande nyheter i denna reviderade upplaga:

Hel omarbetade kapitel om högspänd likström, automatisering och fjärrstyrning , drift och underhåll. Uppdaterat och utökat kapitel om lagstiftning och standardisering. Mer om nya energiformer och hur dessa kompletterar varandra. Nya avsnitt om bland annat nät- och ställverks uppbyggnader, och om brytare/ brytarmanöverdon/frånskiljare. Reaktiv effektkompensering och FACTS.

Om författarnaKarl Axel Jacobsson är ingenjör med elkraftteknisk lärarutbildning från KTH. Han har tidigare verkat inom gymnasie- och högskolan och även som konsult inom industrin. Mångårig läroboks- och fackboksförfattare.Stig Lidström är högskoleingenjör inom elkraft med lång erfarenhet från Vattenfall avseende driftledning, allmänna kontrollanläggningsfrågor, igångkörning, reläskyddsplanering, störningsanalyser och nätutredningar. Han har även flera års erfarenhet från ABB GA Products, teknisk applikationssupport inom reläskydd för HV- och EHV-system, teknisk marknadsföring samt utbildning. Han är medlem i Cigré där han har medverkat i ett antal internationella arbetsgrupper.

Carl Öhlén är civilingenjör inom elkraft från KTH och författare i Elkrafthandboken sedan första upplagan. Han har 40 års internationell erfarenhet inom elkraftbranschen genom arbete för Vattenfall, ABB, Programma, Ripasso Energy och STRI . Under senare år har han för Energimyndigheten varit aktiv inom IEA/ISGAN samt som expert för EC DG-ENERGY i Bryssel.

This book is a comprehensive guide to computer simulations for Electromagnetic Compatibility (EMC) in electronic systems. It brings together the key domains a simulation engineer must master—circuit simulation, field simulation, numerical methods, and expertise in EMC phenomena—to effectively model, analyze and predict the EMC of electronic systems.Using classical EMC scenarios as case studies, the book demonstrates how simulation supports design decisions and performance predictions, with a focus on industrial applications and efficient simulation workflows. A consistent modeling approach is followed throughout: every EMC problem is decomposed into source, coupling path, and sink, with appropriate modeling techniques introduced for each part. Early chapters introduce circuit-level models and field simulation methods. As the book progresses, more advanced numerical methods and simulation workflows are introduced, enabling the simulation of complex EMC challenges. In the later sections, simulations based on standardized EMC test setups are explored. These typically involve large, computationally demanding models—here, strategies for model simplification and their impact on results are examined.Key Features:A complete framework for EMC simulation using combined circuit and field simulationStep-by-step guidance on how to virtually analyze and predict the EMC of electronic systemsPractical, industry-related examples that reflect common challenges faced by EMC engineersMore than 150 simulation models based on CST Studio Suite are available through Springer’s GitHub repository

This advanced undergraduate- and graduate-level text by the 1988 Nobel Prize winner establishes the subject's mathematical background, reviews the principles of electrostatics, then introduces Einstein's special theory of relativity and applies it throughout the book in topics ranging from Gauss' theorem and Coulomb's law to electric and magnetic susceptibility.

Signals and Systems Using MATLAB, Fourth Edition features a pedagogically rich and accessible approach to what can commonly be a mathematically dry subject. Historical notes and common mistakes combined with applications in controls, communications, and signal processing help students understand and appreciate the usefulness of the techniques described in the text. This new edition features more worked examples and a variety of new end-of-chapter problems, suggestions for labs, and more explanation of MATLAB code.Introduces both continuous and discrete systems early and then studies each separately more in-depthContains an extensive set of worked examples and homework assignments with applications to controls, communications, and signal processingBegins with a review of all the background math necessary to study the subjectIncludes MATLAB� problems and applications in every chapter

For centuries, electricity was viewed as little more than a curious property of certain substances that sparked when rubbed. Then, in the 1790s, Alessandro Volta began the scientific investigation that ignited an explosion of knowledge and invention, transforming our world. The force that once seemed inconsequential was revealed to be responsible for everything from the structure of the atom to the functioning of our brains. A superb storyteller, Bodanis weaves tales of romance, divine inspiration, and fraud through lucid accounts of scientific breakthrough. The great discoverers come to life in all their brilliance and idiosyncrasy, including the visionary Michael Faraday, who struggled against the prejudices of the British class system, and Alexander Graham Bell, driven to invent by his love for a young deaf student. From the cold waters of the Atlantic, to the streets of Hamburg during a World War II firestorm and the interior of the human body, Electric Universe is a mesmerizing journey of discovery by a master science writer.

This textbook presents a basic undergraduate course in physics covering all essential aspects of mechanics, mechanical properties of matter, thermal properties of matter, elementary thermodynamics, electrodynamics, electricity, magnetism, light, optics and sound. It includes simple mathematical approaches to each physical principle, with carefully selected examples and exercises supporting each chapter.This second edition of a widely popular textbook – boasting close to 6 million downloads – adds many new exercises and solutions, a new summary for each chapter, boxed features separating the examples from the text, and highlights fundamental physical outcomes and rules. The appendices provide a quick and helpful point of reference for all fundamental conversion factors and basic formulas, as well as rules for differentiation and integration, helping students to understand the elementary mathematical steps used for solving the examples and exercises. Visually impressive and full of real-word examples with step-by-step solutions, this textbook is an indispensable tool for both instructors and students seeking direct access to a broad spectrum of physics.

Earth's Magnetosphere: Formed by the Low Latitude Boundary Layer, Second Edition, provides a fully updated overview of both historical and current data related to the magnetosphere and how it is formed. With a focus on experimental data and space missions, the book goes in depth relating space physics to the Earth's magnetosphere and its interaction with the solar wind. Starting with Newton's law, this book also examines Maxwell's equations and subsidiary equations such as continuity, constitutive relations and the Lorentz transformation, Helmholtz' theorem, and Poynting's theorem, among other methods for understanding this interaction.This new edition of Earth's Magnetosphere is updated with information on such topics as 3D reconnection, space weather implications, recent missions such as MMS, ionosphere outflow and coupling, and the inner magnetosphere. With the addition of end-of-chapter problems as well, this book is an excellent foundational reference for geophysicists, space physicists, plasma physicists, and graduate students alike. Offers an historical perspective of early magnetospheric research, combined with progress up to the present Describes observations from various spacecraft in a variety of regions, with explanations and discussions of each Includes chapters on prompt particle acceleration to high energies, plasma transfer event, and the low latitude boundary layer

The Earth's magnetic field has existed for hundreds of millions of years, far longer than life has existed on Earth, and affects our lives in many ways. We can use it to orient buildings and navigate across unmarked territory. Moreover, it protects us from harmful radiation from space.Intended as an introductory guide for non-specialist readers, this book describes the historical importance of the Earth's magnetic field and its role in protecting the planet from harmful high-energy radiation from the Sun. With explanations of underlying physics of processes and references to original scientific works, the reader can explore the Earth's magnetic field and the various ways in which geomagnetics are used and measured, including the analysis of modern satellite-based investigations and the effects of solar activity on the geomagnetic field.

Many times through deep history Earth’s magnetic poles have switched places, leaving our planet’s protective shield weaker and life vulnerable to devastating solar storms. The last time it happened was 780,000 years ago, long before humans emerged, but it won’t be long until it happens again. And when it does, will it send us back to the Stone Age?The Spinning Magnet is a fascinating insight into what may lie ahead.From the pivotal discoveries of Victorian scientists to the possibility of solar radiation wiping out power grids, and the secrets of electromagnetism, Alanna Mitchell reveals the truth behind one of the most powerful forces in the universe.

The emerging field of semiconductor quantum optics combines semiconductor physics and quantum optics, with the aim of developing quantum devices with unprecedented performance. In this book researchers and graduate students alike will reach a new level of understanding to begin conducting state-of-the-art investigations. The book combines theoretical methods from quantum optics and solid-state physics to give a consistent microscopic description of light-matter- and many-body-interaction effects in low-dimensional semiconductor nanostructures. It develops the systematic theory needed to treat semiconductor quantum-optical effects, such as strong light-matter coupling, light-matter entanglement, squeezing, as well as quantum-optical semiconductor spectroscopy. Detailed derivations of key equations help readers learn the techniques and nearly 300 exercises help test their understanding of the materials covered. The book is accompanied by a website hosted by the authors, containing further discussions on topical issues, latest trends and publications on the field. The link can be found at www.cambridge.org/9780521875097.