From the origins of the earth to the exploration of the heavens, Ben Bova, a multiple winner of science fiction's Hugo Award, unveils the beauty and science of light. In accessible prose, he explains new discoveries in areas ranging from relativity and quantum physics to perspective and the Renaissance painters' use of light.

This book presents the essential aspects of relativistic quantum field theory, with minimal use of mathematics. It covers the development of quantum field theory from the original quantization of electromagnetic field to the gauge field theory of interactions among quarks and leptons.Aimed at both scientists and non-specialists, it requires only some rudimentary knowledge of the Lagrangian and Hamiltonian formulation of Newtonian mechanics and a basic understanding of the special theory of relativity and quantum mechanics.

This book is the first of its kind devoted to the key role played by light and electromagnetic radiation in the universe. Readers are introduced to philosophical hypotheses such as the economy, symmetry and the universality of natural laws, and are then guided to practical consequences such as the rules of geometrical optics and even Einstein''s well-known but mysterious relationship, E = mc2. Most chapters feature a pen picture of the life and character of a relevant scientific figure. These OCyHistorical InterludesOCO include, among others, Galileo''s conflicts with the Inquisition, Fourier''s taunting of the guillotine, Neils Bohr and World War II, and the unique character of Richard Feynman.The second edition has been revised and made more accessible to the general reader. Whenever possible, the mathematical material of the first edition has been replaced by appropriate text to give a verbal account of the mystery of the phenomenon of light and how its understanding has developed from pre-historic to present times. The emphasis is on reading for interest and enjoyment; formulae or equations which underpin and reinforce the argument are presented in a form which does not interfere with the flow of the text.The book will be of interest to students and teachers, as well as general readers interested in physics.

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.

A boy rides a bicycle down a dusty road. But in his mind, he envisions himself traveling at a speed beyond imagining, on a beam of light. This brilliant mind will one day offer up some of the most revolutionary ideas ever conceived. From a boy endlessly fascinated by the wonders around him, Albert Einstein ultimately grows into a man of genius recognized the world over for profoundly illuminating our understanding of the universe. Jennifer Berne and Vladimir Radunsky invite the reader to travel along with Einstein on a journey full of curiosity, laughter, and scientific discovery. Parents and children alike will appreciate this moving story of the powerful difference imagination can make in any life.

A faint echo of the past, a memory crossing the mists of time, was Bridget's first clue of a life she once lived. The first step of the journey to understand the most pondered enigma of all time, life. Bridget's purpose is to find that spiritual talisman sought by people of all ages, the Philosopher's Stone or Holy Grail. Dependent on her success is her own salvation and that of the world. Using the accumulated wisdom of five millennia of human thought, together with 21st-century science, Bridget must learn the true nature of herself, life, and that vast being known by scientists as the Cosmos and the religious as deity, reconciling the fundamental paradoxes of life and death, good and evil, science and God. She undertook the quest before, as an Iron Age priestess. Now, history is repeating itself. The world again descends into chaos and Bridget must walk The Path once more. ,

Elephant is so heavy, and all the other animals are so light. How will the seesaw ever go up and down? Toddlers will be drawn in by repetition, opposites, humor, and an unexpected twist in this board book story about Elephant's quest to get the seesaw to teeter. A cast of friendly animals--who are all so light--try to help move the seesaw, but Elephant's side won't budge. He's so heavy. Then what happens when a child swoops in with other plans? Short, simple, and memorable, this board book offers a satisfying story arc. "Such a heavyweight for such a light little book—delightful" — Kirkus Reviews STARRED REVIEW "An amusing introduction to the concepts of weight, balance, and opposites" — Publisher's Weekly

#1 NEW YORK TIMES BESTSELLER • The groundbreaking account of life after death that has become a source of comfort, inspiration, and solace to millions “I felt a surge of energy, and my spirit was suddenly drawn through my chest and pulled upward. My first impression is that I was free. . . .” On the night of November 19, 1973, following surgery, thirty-one-year-old wife and mother Betty J. Eadie died. This is her extraordinary story of the events that followed, her astonishing proof of life after physical death. She saw more, perhaps than any other person has seen before and shares her almost photographic recollections of the remarkable details. Compelling, inspiring, and infinitely reassuring, her vivid account gives us a glimpse of the peace and unconditional love that awaits us all. More important, Betty's journey offers a simple message that can transform our lives today, showing us our purpose and guiding us to live the way we were meant to—joyously, abundantly, and with love. Praise for Embraced by the Light “The most detailed and spellbinding near-death experience I have ever heard.”—Kimberly Clark-Sharp, president, Seattle International Association of Near-Death Studies

Roger and Carolyn Perron purchased the home of their dreams and eventual nightmares in December of 1970. The Arnold Estate, located just beyond the village of Harrisville, Rhode Island seemed the idyllic setting in which to raise a family. The couple unwittingly moved their five young daughters into the ancient and mysterious farmhouse. Secrets were kept and then revealed within a space shared by mortal and immortal alike. Time suddenly became irrelevant; fractured by spirits making their presence known then dispersing into the ether. The house is a portal to the past and a passage to the future. This is a sacred story of spiritual enlightenment, told some thirty years hence. The family is now somewhat less reticent to divulge a closely-guarded experience. Their odyssey is chronicled by the eldest sibling and is an unabridged account of a supernatural excursion. Ed and Lorraine Warren investigated this haunting in a futile attempt to intervene on their behalf. They consider the Perron family saga to be one of the most compelling and significant of a famously ghost-storied career as paranormal researchers. During a seance gone horribly wrong, they unleashed an unholy hostess; the spirit called Bathsheba; a God-forsaken soul. Perceiving herself to be the mistress of the house, she did not appreciate the competition. Carolyn had long been under siege; overt threats issued in the form of firea mother's greatest fear. It transformed the woman in unimaginable ways. After nearly a decade the family left a once beloved home behind though it will never leave them, as each remains haunted by a memory. This tale is an inspiring testament to the resilience of the human spirit on a pathway of discovery: an eternal journey for the living and the dead.

In this companion to Glass Slipper, Gold Sandal, Newbery Medal winner Paul Fleischman and Julie Paschkis turn to the universal story of creation. In the beginning there was only darkness. . . . There was fire and ice. . . . There was a single drop of milk. Combining elements of the creation story from different traditions, this narrative weaves together one complete picture of how the world began. First Light, First Life is a celebration of the many and varied peoples of the earth, of their commonalities and their differences. It is a celebration of life. Learn more about the creation of First Light, First Life: https://booksaroundthetable.wordpress.com/2016/09/30/first-light-first-life/ http://www.paulfleischman.net/bio.htm#FirstLightArticle