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"This is a concise, beginning graduate-level textbook on classical electromagnetism, the branch of physics that describes the interaction of electric currents or fields and magnetic fields. Electromagnetism (also called electrodynamics) is one of the pillars of modern physics and, as such, of the modern physics curriculum, with courses on electromagnetism required at the undergraduate and graduate levels. These courses traditionally proceed in a quasi-historical fashion, starting from equations and laws that were first formulated in the eighteenth and nineteenth centuries and still form the foundations of our understanding of electromagnetism. However, as Robert Wald argues, teaching in this way can be imprecise and tends to promote outdated ways of thinking about the subject. This book rethinks how electromagnetism is presented at the graduate level, offering a corrective that aims to bring teaching up to date with our more modern understanding of the topic. The book begins by debunking four common misconceptions, or "myths," that can hinder a deep conceptual understanding of electromagnetism. Wald then proceeds through the major topics first-year grad courses (and textbooks) in electromagnetism typically cover, including electrostatics, dielectrics, magnetostatics, electrodynamics, geometric optics, special relativity, gauge theory, and point charge. Wald's aim throughout is to explain to students how to think about electromagnetism from a modern and mathematically precise perspective, formulating all the key conceptual ideas and results in the field clearly and concisely, while forgoing extensive collections of examples and applications. The book could be used as the basis for or as a supplement to a course, or for self-study by students seeking a deeper understanding than traditional courses and books offer"-- "A modern approach to classical electromagnetismElectromagnetism is one the pillars of modern physics. Robert Wald provides graduate students with a clear, concise, and mathematically precise introduction to the subject, covering all the core topics while bringing the teaching of electromagnetism up to date with our modern understanding of the subject. Electromagnetism is usually taught in a quasi-historical fashion, starting from concepts formulated in the eighteenth and nineteenth centuries, but this tends to promote outdated and unhealthy ways of thinking about the theory. Wald begins with Maxwell's equations-the foundation of electromagnetism-together with the formulas for the energy density, momentum density, and stress tensor of the electromagnetic field. He then proceeds through all the major topics in classical electromagnetism, such as electrostatics, dielectrics, magnetostatics, electrodynamics and radiation, diffraction, and special relativity. The last two chapters discuss electromagnetism as a gauge theory and the notion of a point charge-topics not normally treated in electromagnetism texts.Completely rethinks how to teach electromagnetism to first-year graduate studentsPresents electromagnetism from a modern, mathematically precise perspective, formulating key conceptual ideas and results clearly and conciselyWritten by a world-class physicist, proven in the classroomCovers all the subjects found in standard electromagnetism textbooks as well as additional topics such as the derivation of the initial value formulation for Maxwell's equationsAlso ideal as a supplementary text or for self-study"--

Electromagnetism --- SCIENCE / Physics / Electromagnetism --- SCIENCE / Physics / General

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Modern Physics intertwines active learning pedagogy with the material typically covered in an introductory survey, from the basics of relativity and quantum mechanics through recent developments in particle physics and cosmology. The flexible approach taken by the authors allows instructors to easily incorporate as much or as little active learning into their teaching as they choose. Chapters are enhanced by 'Discovery' and 'Active Reading' exercises to guide students through key ideas before or during class, while 'ConcepTests' help check student understanding and stimulate classroom discussions. Each chapter also includes extensive assessment material, with a range of basic comprehension questions, drill and practice calculations, computer-based problems, and explorations of advanced applications. A test bank and interactive animations as well as other support for instructors and students are available online. Students are engaged by an accessible and lively writing style, thorough explanations, 'Math Interludes' which account for varying levels of skill and experience, and advanced topics to further pique their interest in physics.

Physics --- Relativity (Physics) --- Quantum theory. --- Nuclear physics. --- Molecules. --- Cosmology. --- Statistical physics. --- Solids. --- SCIENCE / Physics / General --- Physique --- Relativité (physique) --- Théorie quantique --- Physique nucléaire --- Physique statistique. --- Solides. --- Molécules. --- Cosmologie. --- Étude et enseignement.

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"A survey of the criticality hypothesis which imports theory from physics to understand the brain and could be a grand unifying theory of the brain at a time when neuroscience is dominated by data"--

Neurosciences --- Cryogenics --- Neural networks & fuzzy systems --- Critical point --- Phase transition --- Cortex --- Neuronal avalanche --- Power law --- Homeostasis --- Optimality --- Universality --- Epilepsy --- Neural network --- Computational neuroscience --- Neuroscience --- Information theory --- Electrophysiology. --- Cerebral cortex. --- Brain. --- Neurology. --- SCIENCE / Life Sciences / Neuroscience --- SCIENCE / Physics / General --- COMPUTERS / Data Science / Neural Networks --- Medicine --- Nervous system --- Neuropsychiatry --- Cerebrum --- Mind --- Central nervous system --- Head --- Brain mantle --- Cortex, Cerebral --- Cortex cerebri --- Mantle of brain --- Pallium (Brain) --- Telencephalon --- Diseases