From the revelation of fire to mediaeval quests for the legendary Philosopher’s Stone, the alchemical path has attracted many great minds.Packed with recipes for herbal elixirs, soothing balms, heady scents, rich pigments, and potent solvents, The Alchemist’s Kitchen will appeal to anyone fascinated by the past and the occult world.From the legendary Emerald Tablet of Hermes Trismegistus and Paracelsus’s spagyric medicine, to the ancient science of the four elements and the symbolic associations of mediaeval pigment recipes, this book—illustrated with old engravings and original art—takes you inside mediaeval laboratories and kitchens to explore the sacred secrets of matter.

    Using Everett's unpublished papers (recently discovered in his son's basement) and dozens of interviews with his friends, colleagues, and surviving family members, Byrne paints, for the general reader, a detailed portrait of the genius who invented an astonishing way of describing our complex universe from the inside. Everett's mathematical model (called the "universal wave function") treats all possible events as "equally real," and concludes that countless copies of every person and thing exist in all possible configurations spread over an infinity of universes: many worlds. Afflicted by depression and addictions, Everett strove to bring rational order to the professional realms in which he played historically significant roles. In addition to his famous interpretation of quantum mechanics, Everett wrote a classic paper in game theory; created computer algorithms that revolutionized military operations research; and performed pioneering work in artificial intelligence for top secret government projects. He wrote the original software for targeting cities in a nuclear hot war; and he was one of the first scientists to recognize the danger of nuclear winter. As a Cold Warrior, he designed logical systems that modeled "rational" human and machine behaviors, and yet he was largely oblivious to the emotional damage his irrational personal behavior inflicted upon his family, lovers, and business partners. He died young, but left behind a fascinating record of his life, including correspondence with such philosophically inclined physicists as Niels Bohr, Norbert Wiener, and John Wheeler. These remarkable letters illuminate the long and often bitter struggle to explain the paradox of measurement at the heart of quantum physics. In recent years, Everett's solution to this mysterious problem-the existence of a universe of universes-has gained considerable traction in scientific circles, not as science fiction, but as an explanation of physical reality.

    Having just completed his masterpiece, The General Theory of Relativity—which provided a brand-new theory of gravity and promised a new perspective on the cosmos as a whole—he set out at once to share his excitement with as wide a public as possible in this popular and accessible book.Here published for the first time as a Penguin Classic, this edition of Relativity features a new introduction by bestselling science author Nigel Calder.

    Even after more than three centuries and the revolutions of Einsteinian relativity and quantum mechanics, Newtonian physics continues to account for many of the phenomena of the observed world, and Newtonian celestial dynamics is used to determine the orbits of our space vehicles.This completely new translation, the first in 270 years, is based on the third (1726) edition, the final revised version approved by Newton; it includes extracts from the earlier editions, corrects errors found in earlier versions, and replaces archaic English with contemporary prose and up-to-date mathematical forms. Newton's principles describe acceleration, deceleration, and inertial movement; fluid dynamics; and the motions of the earth, moon, planets, and comets. A great work in itself, the Principia also revolutionized the methods of scientific investigation. It set forth the fundamental three laws of motion and the law of universal gravity, the physical principles that account for the Copernican system of the world as emended by Kepler, thus effectively ending controversy concerning the Copernican planetary system.The illuminating Guide to the Principia by I. Bernard Cohen, along with his and Anne Whitman's translation, will make this preeminent work truly accessible for today's scientists, scholars, and students.

    This is a new view of mathematics, not the one we learned at school but a comprehensive guide to the patterns that recur through the universe and underlie human affairs. A Beginner's Guide to Constructing, the Universe shows you: Why cans, pizza, and manhole covers are round.Why one and two weren't considered numbers by the ancient Greeks.Why squares show up so often in goddess art and board games.What property makes the spiral the most widespread shape in nature, from embryos and hair curls to hurricanes and galaxies. How the human body shares the design of a bean plant and the solar system. How a snowflake is like Stonehenge, and a beehive like a calendar. How our ten fingers hold the secrets of both a lobster a cathedral, and much more.

    S. Lewis's famed but apparently disorganised Chronicles of Narnia have an underlying symbolic coherence, pointing to such possible unifying themes as the seven sacraments, the seven deadly sins, and the seven books of Spenser's Faerie Queene. None of these explanations has won general acceptance and the structure of Narnia's symbolism has remained a mystery.Michael Ward has finally solved the enigma. In Planet Narnia he demonstrates that medieval cosmology, a subject which fascinated Lewis throughout his life, provides the imaginative key to the seven novels. Drawing on the whole range of Lewis's writings (including previously unpublished drafts of the Chronicles), Ward reveals how the Narnia stories were designed to express the characteristics of the seven medieval planets - - Jupiter, Mars, Sol, Luna, Mercury, Venus, and Saturn - - planets which Lewis described as "spiritual symbols of permanent value" and "especially worthwhile in our own generation." Using these seven symbols, Lewis secretly constructed the Chronicles so that in each book the plot-line, the ornamental details, and, most important, the portrayal of the Christ-figure of Aslan, all serve to communicate the governing planetary personality. The cosmological theme of each Chronicle is what Lewis called 'the kappa element in romance', the atmospheric essence of a story, everywhere present but nowhere explicit. The reader inhabits this atmosphere and thus imaginatively gains connaitre knowledge of the spiritual character which the tale was created to embody.Planet Narnia is a ground-breaking study that will provoke a major revaluation not only of the Chronicles, but of Lewis's whole literary and theological outlook. Ward uncovers a much subtler writer and thinker than has previously been recognized, whose central interests were hiddenness, immanence, and knowledge by acquaintance."

    Lewis' The Discarded Image paints a lucid picture of the medieval world view, as historical and cultural background to the literature of the Middle Ages and Renaissance. It describes the image discarded by later ages as the medieval synthesis itself, the whole organization of their theology, science and history into a single, complex, harmonious mental model of the universe. This, Lewis' last book, was hailed as the final memorial to the work of a great scholar and teacher and a wise and noble mind.

    It covers the most fertile and the most lasting work on every significant area he published in.

    Far from being meek and mild, they were violent, ruthless and fundamentally intolerant. Unlike the polytheistic world, in which the addition of one new religion made no fundamental difference to the old ones, this new ideology stated not only that it was the way, the truth and the light but that, by extension, every single other way was wrong and had to be destroyed. From the 1st century to the 6th, those who didn't fall into step with its beliefs were pursued in every possible way: social, legal, financial and physical. Their altars were upturned and their temples demolished, their statues hacked to pieces and their priests killed. It was an annihilation.Authoritative, vividly written and utterly compelling, this is a remarkable debut from a brilliant young historian.

    In Battling the Gods, Tim Whitmarsh journeys into the ancient Mediterranean, a world almost unimaginably different from our own, to recover the stories and voices of those who first refused the divinities.Homer’s epic poems of human striving, journeying, and passion were ancient Greece’s only “sacred texts,” but no ancient Greek thought twice about questioning or mocking his stories of the gods. Priests were functionaries rather than sources of moral or cosmological wisdom. The absence of centralized religious authority made for an extraordinary variety of perspectives on sacred matters, from the devotional to the atheos, or “godless.” Whitmarsh explores this kaleidoscopic range of ideas about the gods, focusing on the colorful individuals who challenged their existence. Among these were some of the greatest ancient poets and philosophers and writers, as well as the less well known: Diagoras of Melos, perhaps the first self-professed atheist; Democritus, the first materialist; Socrates, executed for rejecting the gods of the Athenian state; Epicurus and his followers, who thought gods could not intervene in human affairs; the brilliantly mischievous satirist Lucian of Samosata.Before the revolutions of late antiquity, which saw the scriptural religions of Christianity and Islam enforced by imperial might, there were few constraints on belief. Everything changed, however, in the millennium between the appearance of the Homeric poems and Christianity’s establishment as Rome’s state religion in the fourth century AD. As successive Greco-Roman empires grew in size and complexity, and power was increasingly concentrated in central capitals, states sought to impose collective religious adherence, first to cults devoted to individual rulers, and ultimately to monotheism. In this new world, there was no room for outright disbelief: the label “atheist” was used now to demonize anyone who merely disagreed with the orthodoxy—and so it would remain for centuries.As the twenty-first century shapes up into a time of mass information, but also, paradoxically, of collective amnesia concerning the tangled histories of religions, Whitmarsh provides a bracing antidote to our assumptions about the roots of freethinking. By shining a light on atheism’s first thousand years, Battling the Gods offers a timely reminder that nonbelief has a wealth of tradition of its own, and, indeed, its own heroes. From the Hardcover edition.

    Adopting those aspects of the religion that suited his purposes, he turned Rome on a course from the relatively open, tolerant and pluralistic civilization of the Hellenistic world, towards a culture that was based on the rule of fixed authority, whether that of the Bible, or the writings of Ptolemy in astronomy and of Galen and Hippocrates in medicine. Only a thousand years later, with the advent of the Renaissance and the emergence of modern science, did Europe begin to free itself from the effects of Constantine's decision, yet the effects of his establishment of Christianity as a state religion remain with us, in many respects, today. Brilliantly wide-ranging and ambitious, this is a major work of history.

    A meld of history and science, this book is a group portrait of some of the greatest minds who ever lived as they wrestled with nature’s most sweeping mysteries. The answers they uncovered still hold the key to how we understand the world.At the end of the seventeenth century—an age of religious wars, plague, and the Great Fire of London—when most people saw the world as falling apart, these earliest scientists saw a world of perfect order. They declared that, chaotic as it looked, the universe was in fact as intricate and perfectly regulated as a clock. This was the tail end of Shakespeare’s century, when the natural land the supernatural still twined around each other. Disease was a punishment ordained by God, astronomy had not yet broken free from astrology, and the sky was filled with omens. It was a time when little was known and everything was new. These brilliant, ambitious, curious men believed in angels, alchemy, and the devil, and they also believed that the universe followed precise, mathematical laws—-a contradiction that tormented them and changed the course of history.The Clockwork Universe is the fascinating and compelling story of the bewildered geniuses of the Royal Society, the men who made the modern world.

    Breaking down the symbols themselves, they pose a series of questions: What is energy? What is mass? What has the speed of light got to do with energy and mass? In answering these questions, they take us to the site of one of the largest scientific experiments ever conducted. Lying beneath the city of Geneva, straddling the Franco-Swiss boarder, is a 27 km particle accelerator, known as the Large Hadron Collider. Using this gigantic machine—which can recreate conditions in the early Universe fractions of a second after the Big Bang—Cox and Forshaw will describe the current theory behind the origin of mass.Alongside questions of energy and mass, they will consider the third, and perhaps, most intriguing element of the equation: 'c' - or the speed of light. Why is it that the speed of light is the exchange rate? Answering this question is at the heart of the investigation as the authors demonstrate how, in order to truly understand why E=mc2, we first must understand why we must move forward in time and not backwards and how objects in our 3-dimensional world actually move in 4-dimensional space-time. In other words, how the very fabric of our world is constructed. A collaboration between two of the youngest professors in the UK, Why Does E=mc2? promises to be one of the most exciting and accessible explanations of the theory of relativity in recent years.

    In the hands of one of today’s hottest young physicists, that simple fact of breakfast becomes a doorway to understanding the Big Bang, the universe, and other universes, too. In From Eternity to Here, Sean Carroll argues that the arrow of time, pointing resolutely from the past to the future, owes its existence to conditions before the Big Bang itself, a period modern cosmology of which Einstein never dreamed. Increasingly, though, physicists are going out into realms that make the theory of relativity seem like child’s play. Carroll’s scenario is not only elegant, it’s laid out in the same easy-to- understand language that has made his group blog, Cosmic Variance, the most popular physics blog on the Net. From Eternity to Here uses ideas at the cutting edge of theoretical physics to explore how properties of spacetime before the Big Bang can explain the flow of time we experience in our everyday lives. Carroll suggests that we live in a baby universe, part of a large family of universes in which many of our siblings experience an arrow of time running in the opposite direction. It’s an ambitious, fascinating picture of the universe on an ultra-large scale, one that will captivate fans of popular physics blockbusters like Elegant Universe and A Brief History of Time.

    Wilczek’s groundbreaking work in quantum physics was inspired by his intuition to look for a deeper order of beauty in nature. In fact, every major advance in his career came from this intuition: to assume that the universe embodies beautiful forms, forms whose hallmarks are symmetry—harmony, balance, proportion—and economy. There are other meanings of “beauty,” but this is the deep logic of the universe—and it is no accident that it is also at the heart of what we find aesthetically pleasing and inspiring.Wilczek is hardly alone among great scientists in charting his course using beauty as his compass. As he reveals in A Beautiful Question, this has been the heart of scientific pursuit from Pythagoras, the ancient Greek who was the first to argue that “all things are number,” to Galileo, Newton, Maxwell, Einstein, and into the deep waters of twentiethcentury physics. Though the ancients weren’t right about everything, their ardent belief in the music of the spheres has proved true down to the quantum level. Indeed, Wilczek explores just how intertwined our ideas about beauty and art are with our scientific understanding of the cosmos.Wilczek brings us right to the edge of knowledge today, where the core insights of even the craziest quantum ideas apply principles we all understand. The equations for atoms and light are almost literally the same equations that govern musical instruments and sound; the subatomic particles that are responsible for most of our mass are determined by simple geometric symmetries. The universe itself, suggests Wilczek, seems to want to embody beautiful and elegant forms. Perhaps this force is the pure elegance of numbers, perhaps the work of a higher being, or somewhere between. Either way, we don’t depart from the infinite and infinitesimal after all; we’re profoundly connected to them, and we connect them. When we find that our sense of beauty is realized in the physical world, we are discovering something about the world, but also something about ourselves.Gorgeously illustrated, A Beautiful Question is a mind-shifting book that braids the age-old quest for beauty and the age-old quest for truth into a thrilling synthesis. It is a dazzling and important work from one of our best thinkers, whose humor and infectious sense of wonder animate every page. Yes: The world is a work of art, and its deepest truths are ones we already feel, as if they were somehow written in our souls.