The clerk was Albert Einstein. The paper outlined his Special Theory of Relativity, a revolutionary physical theory which discarded the concept of absolute motion in favor of relative motion in the context of a four-dimensional continuum of space-time. It proved to be the most profound revolution in physics since Newton.About ten years later, building on his earlier work, Einstein formulated the General Theory of Relativity in which he offered a new solution to the great problem of gravitation, postulating the non-Euclidean character of the space-time continuum. Together, the two theories constituted a radically reoriented way of looking at the physical universe, an approach that solved many of the unresolved difficulties of classical mechanics and paved the way for great advances in 20th-century physics. This concise volume contains two addresses by Dr. Einstein outlining aspects of the theories. Ether and Relativity (1920), delivered at the University of Leyden, discusses the properties demanded of the ether of space by the theory of relativity. Geometry and Experience (1921), given at the Prussian Academy of Sciences, describes the limits within which the Euclidean or any other practical geometric system can be held to be approximately true in connection with the concept of a finite universe.Both lectures are reprinted here complete and unabridged; both express elegant ideas in simple prose devoid of complicated equations or abstruse terminology; both offer scientists and laypeople unparalleled insight into the seminal thinking of the 20th century's greatest physicist.

    This book presents the fundamentals of discrete-time signals, systems, and modern digital processing and applications for students in electrical engineering, computer engineering, and computer science.The book is suitable for either a one-semester or a two-semester undergraduate level course in discrete systems and digital signal processing. It is also intended for use in a one-semester first-year graduate-level course in digital signal processing.

    Perform this genius seemingly-mathematical feat on any napkin, any receipt, or even on your friend's arm.You can learn the famous Magic Square, and you can learn it in under 10 minutes.You will have a magician's Grand Finale, in your hands at any moment. This gets audible gasps, and you can wow people with this for the rest of your life...**************************THE PERFORMANCE:**************************Your friend will name a random number. You then speedily write 16 different numbers into a 4x4 grid. With a smug flourish, you then reveal that all combinations and directions within the grid add up to their chosen number. It is simply mind-blowing.Effortlessly perform a trick that it seems only a computer could perform, and learn how in 10 minutes from right now.

    Under the bottom is the top--and the power to smash the Machine. After humanity becomes inextricably linked to the computers, a heroic couple makes a scale-ship journey beneath the smallest particles and through the largest cosmic structures, seeking a perfect world.

    It presents up-to-date information on materials that are used in the dental office and laboratory every day, emphasizing practical, clinical use, as well as the physical, chemical, and biological properties of materials. Extensive new clinical photographs in this edition illustrate the topics, and color plates are integrated close to related concepts as they're discussed in each chapter. A new glossary of key terms found at the beginning of every chapter defines terms in the appropriate context of the chapter's discussion. Also in this edition, critical thinking questions throughout the book stimulate the readers' curiosity on specific topics, test their existing knowledge, and heighten their awareness of important or controversial subjects.Content outlines at the beginning of each chapter provide a quick reference for specific topics.The roles played by key organizations in ensuring the safety and efficacy of dental materials and devices are described - such as the American Dental Association, the U.S. Food and Drug Administration, the International Organization for Standardization, and the F�d�ration Dentaire Internationale.Up-to-date Selected Readings are presented at the end of each chapter to direct readers to supplemental literature on each topic.Numerous boxes and tables throughout summarize and illustrate key concepts and compare characteristics and properties of various dental materials.Distinguished contributors lend their credibility and experience to the text.Content has been completely updated to include information on the most current dental materials available.Glossaries at the beginning of each chapter define key terms used within the context of that chapter.Revised artwork gives this edition a fresh look, with high-quality illustrations and clinical photos to aid in the visualization of materials and procedures described.Reorganization and consolidation of chapters into four major book parts presents the material in a more efficient way: Part I describes the principles of materials science that control the performance of dental materials in dental laboratories, research laboratories, student dental clinics, public health clinics, and private practice clinics. Part II focuses on impression materials, gypsum products, dental waxes, casting investments and procedures, and finishing and polishing abrasives and procedures.Part III provides an updated scientific and applied description of the composition, manipulation principles, properties, and clinical performance of bonded restorations, restorative resins, dental cements, dental amalgams, and direct-filling golds.Part IV presents a basic and applied description of materials that are processed in a laboratory or dental clinic.Critical thinking questions appear in every chapter to stimulate thinking and classroom discussion.The overall design has been improved to provide a more visually appealing format.

    Acclaimed for its readability and presentation of current knowledge, this textbook's philosophy is that OB knowledge is for everyone, not just traditional managers. The new reality is that everyone - sales representatives, production employees, physicians - needs OB knowledge to successfully work in and around organizations. Organizational Behavior is unparalleled in its ability to engage students by bringing cutting edge OB concepts closer to reality through the 'theory-practice link' approach. McShane and Von Glinow help readers connect OB theories to emerging workplace realities through hundreds of fascinating real-life stories from across the United States and around the world. be the source of the hottest topics, such as: employee engagement, resilience, four-drive theory, blogs and wikis, psychological harassment, learning orientation, Schwartz's values model, separating socioemotional from constructive conflict, and much, much, more.

    The author investigates three converging elements in his examination of human differences: individual attitudes and behaviors, cultural expectations, and institutional policies and practices. This examination provides the basis for the conceptual organization of the text.

    Beginning with a central problem that distinguishes sociology from most other ways of looking at the world, Randall Collins examines the limits of human rationality and sociological theories of religion, showing how they open up a general theory of social rituals that holds the key to much of the rest of sociology. With these conceptual tools in hand, he invites students to ponder how sociological analysis can illuminate a variety of urgent topics--power, crime, sex, love, and the position of women in society--as it reveals both their visible social symbols and their paradoxical deep structures. In a new final chapter, Collins stakes out an important role for sociology in the information age, while coming full circle to the theories of rationality and ritual with which he began, showing that artificial intelligence can approximate human creativity only if it can take part in ritual interactions. Uniquely engaging, Sociological Insight dramatizes the major issues and concerns of sociology in a way that gets students thinking and talking, and whets their appetites for more.

    In the warmly-written and engaging style that has become their hallmark, Diane Papalia and Ruth Feldman continue to provide a chronological view of child development; the new edition expands the coverage of cultural and historical influences on development, highlights the latest research in cognitive neuroscience and evolutionary theory, and features a new and improved Visual Assets Database for instructors.

    This best-selling text provides students with the most accessible, comprehensive and current introduction to the issues confronting racial and ethnic groups in both the U.S. and other countries. Organized first by issues and then by major racial and ethnic groups, the text examines each group's history, then explores its current situation and its concerns for the future. Richard Schaefer, a leading scholar in the area of racial and ethnic relations, grew up in Chicago in the 1960's, at a time when neighborhoods were going through transitions in ethnic and racial composition. He found himself increasingly intrigued by what was happening, how people were reacting, and how these changes were affecting neighborhoods and people's jobs. This life-long interest led to a career in sociology, specifically in the areas of race, gender and social class. This book grew out of his desire to help students to understand the changing dynamics of the U.S. population.

    Readers learn how to create control systems that support today's advanced technology and apply the latest computer methods to the analysis and design of control systems. * A methodology with clearly defined steps is presented for each type of design problem. * Continuous design examples give a realistic view of each stage in the control systems design process. * A complete tutorial on using MATLAB Version 5 in designing control systems prepares readers to use this important software tool.

    No matter what brings students into the introductory course and regardless of their initial motivation, Essentials of Understanding Psychology, Seventh Edition, draws students into the field and stimulates their thinking. This revision integrates a variety of elements that foster students' understanding of psychology and its impact on their everyday lives. It also provides instructors with a fully integrated supplements package to objectively gauge their students' mastery of psychology's key principles and concepts and to create dynamic lectures.

    Louis P. Pojman has carefully organized the essays in each section so that they present pro/con dialogues that allow students to compare and contrast the philosophers' positions. Topics covered include the nature of philosophy, the existence of God, immortality, knowledge, the mind-body question, personal identity, free will and determinism, ethics, political philosophy, and the meaning of life. The sixth edition offers selections from Plato, Ren� Descartes, John Locke, David Hume, William James, Bertrand Russell, John Hick, John Hospers, and James Rachels--as well as essays by Aristotle, Thomas Aquinas, Blaise Pascal, Thomas Hobbes, George Berkeley, Immanuel Kant, Gilbert Ryle, Albert Camus, Jean-Paul Sartre, Alvin Plantinga, and many others. In Philosophy: The Quest for Truth, Sixth Edition, Pojman offers substantial introductions to each of the nineteen philosophical problems. In addition, each of the seventy-six readings is accompanied by an individual introduction with a biographical sketch of the philosopher, study questions, and reflective questions that challenge students to analyze and critique the material. Short bibliographies following each major section and a detailed glossary further enhance the text's pedagogical value. Invaluable for introductory courses in philosophy, this highly acclaimed text inspires and guides students' quest for wisdom.New to the Sixth Edition: : * Six selections: William Lane Craig: The Kalam Cosmological Argument and the Anthropic Principle William Rowe: An Analysis of the Ontological Argument Daniel Dennett: Postmodernism and Truth William James: The Dilemma of Determinism Harry Frankfurt: Freedom of the Will and the Concept of a Person John Rawls: The Contemporary Liberal Answer * More exercises in the excursus on logic

    It encompasses lucid descriptions of behaviour, evolutionary history, development, proximate mechanisms and applications.