Theories Of Light

An Iranian scholar chronicles the life and legacy of the last Shah of Iran, including his role in the creation of the modern Islamic republic.

"No one interested in the history of optics, the history of eighteenth- and nineteenth-century physics, or the general phenomenon of theory change in science can afford to ignore Jed Buchwald's well-structured, highly detailed, and scrupulously researched book. . . . Buchwald's analysis will surely constitute the essential starting point for further work on this important and hitherto relatively neglected episode of theory change."—John Worrall, Isis

Celebrated for his brilliantly quirky insights into the physical world, Nobel laureate Richard Feynman also possessed an extraordinary talent for explaining difficult concepts to the general public. Here Feynman provides a classic and definitive introduction to QED (namely, quantum electrodynamics), that part of quantum field theory describing the interactions of light with charged particles. Using everyday language, spatial concepts, visualizations, and his renowned "Feynman diagrams" instead of advanced mathematics, Feynman clearly and humorously communicates both the substance and spirit of QED to the layperson. A. Zee's introduction places Feynman’s book and his seminal contribution to QED in historical context and further highlights Feynman’s uniquely appealing and illuminating style.

These ten short stories explore loss and sacrifice in American suburbia. In idyllic suburbs across the country, from Philadelphia to San Francisco, narrators struggle to find meaning or value in their lives because of (or in spite of) something that has happened in their pasts. In "Hole," a young man reconstructs the memory of his childhood friend's deadly fall. In "The Theory of Light and Matter," a woman second-guesses her choice between a soul mate and a comfortable one. Memories erode as Porter's characters struggle to determine what has happened to their loved ones and whether they are responsible. Children and teenagers carry heavy burdens in these stories: in "River Dog" the narrator cannot fully remember a drunken party where he suspects his older brother assaulted a classmate; in "Azul" a childless couple, craving the affection of an exchange student, fails to set the boundaries that would keep him safe; and in "Departure" a suburban teenage boy fascinated with the Amish makes a futile attempt to date a girl he can never be close to. Memory often replaces absence in these stories as characters reconstruct the events of their pasts in an attempt to understand what they have chosen to keep. These struggles lead to an array of secretive and escapist behavior as the characters, united by middle-class social pressures, try to maintain a sense of order in their lives. Drawing on the tradition of John Cheever, these stories recall and revisit the landscape of American suburbia through the lens of a new generation.

This book traces the evolution of our understanding and utilization of light from classical antiquity and the early thoughts of Pythagoras to the present time. From the earliest recorded theories and experiments to the latest applications in photonic communication and computation, the ways in which light has been put to use are numerous and astounding. Indeed, some of the latest advances in light science are in fields that until recently belonged to the realm of science fiction. The author, writing for an audience of both students and other scientifically interested readers, describes fundamental investigations of the nature of light and ongoing methods to measure its speed as well as the emergence of the wave theory of light and the complementary photon theory. The importance of light in the theory of relativity is discussed as is the development of electrically-driven light sources and lasers. The information here covers the range o f weak single-photon light sources to super-high power lasers and synchrotron light sources. Many cutting-edge topics are also introduced, including entanglement-based quantum communication through optical fibers and free space, quantum teleportation, and quantum computing. The nature and use of "squeezed light" - e.g. for gravitational wave detection - is another fascinating excursion, as is the topic of fabricated metamaterials, as used to create invisibility cloaks. Here the reader also learns about the realization of extremely slow speed and time-reversed light. The theories, experiments, and applications described in this book are, whenever possible, derived from original references. The many annotated drawings and level of detail make clear the goals, procedures, and conclusions of the original investigators. Where they are required, all specialist terms and mathematical symbols are defined and explained. The final part of the book covers light expe riments in the free space of the cosmos, and also speculates about scenarios for the cosmological origins of light and the expected fate of the photon in a dying universe.

The development of physical theory is one of our greatest intellectual achievements. Its products--the currently prevailing theories of physics, astronomy, and cosmology--have proved themselves to possess intrinsic beauty and to have enormous explanatory and predictive power. This anthology of primary readings chronicles the birth and maturation of five such theories (the heliocentric theory, the electromagnetic field theory, special and general relativity, quantum theory, and the big bang theory) in the words of the scientists who brought them to life. It is the first historical account that captures the rich substance of these theories, each of which represents a fascinating story of the interplay of evidence and insight--and of dialogue among great minds. Readers sit in with Copernicus, Kepler, and Galileo as they overturn the geocentric universe; observe the genius of Faraday and Maxwell as they "discover" the electromagnetic field; look over Einstein's shoulder as he works out the details of relativity; listen in as Einstein and Bohr argue for the soul of quantum mechanics in the Completeness Debate; and watch as Hubble and others reveal the history of the universe. The editors' approach highlights the moments of discovery that rise from scientific creativity, and the presentation humanizes the scientific process, revealing the extent to which great scientists were the first to consider the philosophical implications of their work. But, most significantly, the editors offer this as their central thesis: although each was ushered in by a revolution, and each contains counterintuitive elements that delayed its acceptance, these five theories exhibit a continuous rational development that has led them to a permanent place in the worldview of science. Accessible to the general reader yet sufficiently substantive that working scientists will find value in it, The Tests of Time offers an intimate look into how physical theory has been developed, by the brilliant people who have developed it.