Search results for ""author robert wald""

A modern approach to classical electromagnetismElectromagnetism is one of 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fashion, starting from concepts formulated in the eighteenth and nineteenth centuries, but this tends to promote outdated ways of thinking about the theory.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 students Presents electromagnetism from a modern, mathematically precise perspective, formulating key conceptual ideas and results clearly and concisely Written by a world-class physicist and proven in the classroom Covers 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 equations Also ideal as a supplementary text or for self-study

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Biological races do not exist—and never have. This view is shared by all scientists who study variation in human populations. Yet racial prejudice and intolerance based on the myth of race remain deeply ingrained in Western society. In his powerful examination of a persistent, false, and poisonous idea, Robert Sussman explores how race emerged as a social construct from early biblical justifications to the pseudoscientific studies of today.The Myth of Race traces the origins of modern racist ideology to the Spanish Inquisition, revealing how sixteenth-century theories of racial degeneration became a crucial justification for Western imperialism and slavery. In the nineteenth century, these theories fused with Darwinism to produce the highly influential and pernicious eugenics movement. Believing that traits from cranial shape to raw intelligence were immutable, eugenicists developed hierarchies that classified certain races, especially fair-skinned “Aryans,” as superior to others. These ideologues proposed programs of intelligence testing, selective breeding, and human sterilization—policies that fed straight into Nazi genocide. Sussman examines how opponents of eugenics, guided by the German-American anthropologist Franz Boas’s new, scientifically supported concept of culture, exposed fallacies in racist thinking.Although eugenics is now widely discredited, some groups and individuals today claim a new scientific basis for old racist assumptions. Pondering the continuing influence of racist research and thought, despite all evidence to the contrary, Sussman explains why—when it comes to race—too many people still mistake bigotry for science.

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