Is There Time

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The Order of Time

Author : Carlo Rovelli
Publisher : Penguin
Page : 257 pages
File Size : 43,9 Mb
Release : 2019-12-10
Category : Science
ISBN : 9780735216112

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The Order of Time by Carlo Rovelli Pdf

One of TIME’s Ten Best Nonfiction Books of the Decade "Meet the new Stephen Hawking . . . The Order of Time is a dazzling book." --The Sunday Times From the bestselling author of Seven Brief Lessons on Physics, Reality Is Not What It Seems, Helgoland, and Anaximander comes a concise, elegant exploration of time. Why do we remember the past and not the future? What does it mean for time to "flow"? Do we exist in time or does time exist in us? In lyric, accessible prose, Carlo Rovelli invites us to consider questions about the nature of time that continue to puzzle physicists and philosophers alike. For most readers this is unfamiliar terrain. We all experience time, but the more scientists learn about it, the more mysterious it remains. We think of it as uniform and universal, moving steadily from past to future, measured by clocks. Rovelli tears down these assumptions one by one, revealing a strange universe where at the most fundamental level time disappears. He explains how the theory of quantum gravity attempts to understand and give meaning to the resulting extreme landscape of this timeless world. Weaving together ideas from philosophy, science and literature, he suggests that our perception of the flow of time depends on our perspective, better understood starting from the structure of our brain and emotions than from the physical universe. Already a bestseller in Italy, and written with the poetic vitality that made Seven Brief Lessons on Physics so appealing, The Order of Time offers a profoundly intelligent, culturally rich, novel appreciation of the mysteries of time.

The End of Time

Author : Julian Barbour
Publisher : Oxford University Press
Page : 385 pages
File Size : 44,7 Mb
Release : 2001-11-29
Category : Science
ISBN : 9780199760893

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The End of Time by Julian Barbour Pdf

Richard Feynman once quipped that "Time is what happens when nothing else does." But Julian Barbour disagrees: if nothing happened, if nothing changed, then time would stop. For time is nothing but change. It is change that we perceive occurring all around us, not time. Put simply, time does not exist. In this highly provocative volume, Barbour presents the basic evidence for a timeless universe, and shows why we still experience the world as intensely temporal. It is a book that strikes at the heart of modern physics. It casts doubt on Einstein's greatest contribution, the spacetime continuum, but also points to the solution of one of the great paradoxes of modern science, the chasm between classical and quantum physics. Indeed, Barbour argues that the holy grail of physicists--the unification of Einstein's general relativity with quantum mechanics--may well spell the end of time. Barbour writes with remarkable clarity as he ranges from the ancient philosophers Heraclitus and Parmenides, through the giants of science Galileo, Newton, and Einstein, to the work of the contemporary physicists John Wheeler, Roger Penrose, and Steven Hawking. Along the way he treats us to enticing glimpses of some of the mysteries of the universe, and presents intriguing ideas about multiple worlds, time travel, immortality, and, above all, the illusion of motion. The End of Time is a vibrantly written and revolutionary book. It turns our understanding of reality inside-out.

The Mathematical Reality

Author : Alexander Unzicker
Publisher : Unknown
Page : 222 pages
File Size : 40,7 Mb
Release : 2020-01-29
Category : Electronic
ISBN : 9798602252484

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The Mathematical Reality by Alexander Unzicker Pdf

Alexander Unzicker is a theoretical physicist and writes about elementary questions of natural philosophy. His critique of contemporary physics Bankrupting Physics (Macmillan) received the 'Science Book of the Year' award (German edition 2010). With The Mathematical Reality, Unzicker presents his most fundamental work to date, which is the result of years of study of natural laws and their historical development.The discovery of fundamental laws of nature has influenced the fate of Homo sapiens more than anything else. Has modern physics already understood these laws? Many puzzles formulated by Albert Einstein or Paul Dirac are still unsolved today, in particular the meaning of fundamental constants. In this book, Unzicker contends that a rational description of nature must do without any constants.A methodological and historical analysis shows, however, that the underlying problem of physics is deep, unexpected and fatal: the concepts of space and time themselves, the basis of science since Newton, could be fundamentally inappropriate for the description of reality, although-or precisely because-they are so easily accessible to human perception.A new understanding of reality can only arise from mathematics. By exploring the three-dimensional unitary sphere, which could replace the concepts of space and time, the author presents a mathematical vision that points the way to a new understanding of reality.

The Large Scale Structure of Space-Time

Author : S. W. Hawking,G. F. R. Ellis
Publisher : Cambridge University Press
Page : 128 pages
File Size : 44,5 Mb
Release : 1975-02-27
Category : Science
ISBN : 9781139810951

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The Large Scale Structure of Space-Time by S. W. Hawking,G. F. R. Ellis Pdf

Einstein's General Theory of Relativity leads to two remarkable predictions: first, that the ultimate destiny of many massive stars is to undergo gravitational collapse and to disappear from view, leaving behind a 'black hole' in space; and secondly, that there will exist singularities in space-time itself. These singularities are places where space-time begins or ends, and the presently known laws of physics break down. They will occur inside black holes, and in the past are what might be construed as the beginning of the universe. To show how these predictions arise, the authors discuss the General Theory of Relativity in the large. Starting with a precise formulation of the theory and an account of the necessary background of differential geometry, the significance of space-time curvature is discussed and the global properties of a number of exact solutions of Einstein's field equations are examined. The theory of the causal structure of a general space-time is developed, and is used to study black holes and to prove a number of theorems establishing the inevitability of singualarities under certain conditions. A discussion of the Cauchy problem for General Relativity is also included in this 1973 book.

An Experiment with Time

Author : J.W. Dunne
Publisher : Courier Dover Publications
Page : 174 pages
File Size : 52,9 Mb
Release : 2022-08-17
Category : Body, Mind & Spirit
ISBN : 9780486849942

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An Experiment with Time by J.W. Dunne Pdf

A fascinating look at author J. W. Dunne’s controversial model of multidimensional time, based on precognitive dreams. The proposed concept accounted for insights into higher consciousness and many of life’s mysteries.

Space, Time and the Limits of Human Understanding

Author : Shyam Wuppuluri,Giancarlo Ghirardi
Publisher : Springer
Page : 530 pages
File Size : 49,9 Mb
Release : 2016-12-01
Category : Science
ISBN : 9783319444185

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Space, Time and the Limits of Human Understanding by Shyam Wuppuluri,Giancarlo Ghirardi Pdf

In this compendium of essays, some of the world’s leading thinkers discuss their conceptions of space and time, as viewed through the lens of their own discipline. With an epilogue on the limits of human understanding, this volume hosts contributions from six or more diverse fields. It presumes only rudimentary background knowledge on the part of the reader. Time and again, through the prism of intellect, humans have tried to diffract reality into various distinct, yet seamless, atomic, yet holistic, independent, yet interrelated disciplines and have attempted to study it contextually. Philosophers debate the paradoxes, or engage in meditations, dialogues and reflections on the content and nature of space and time. Physicists, too, have been trying to mold space and time to fit their notions concerning micro- and macro-worlds. Mathematicians focus on the abstract aspects of space, time and measurement. While cognitive scientists ponder over the perceptual and experiential facets of our consciousness of space and time, computer scientists theoretically and practically try to optimize the space-time complexities in storing and retrieving data/information. The list is never-ending. Linguists, logicians, artists, evolutionary biologists, geographers etc., all are trying to weave a web of understanding around the same duo. However, our endeavour into a world of such endless imagination is restrained by intellectual dilemmas such as: Can humans comprehend everything? Are there any limits? Can finite thought fathom infinity? We have sought far and wide among the best minds to furnish articles that provide an overview of the above topics. We hope that, through this journey, a symphony of patterns and tapestry of intuitions will emerge, providing the reader with insights into the questions: What is Space? What is Time? Chapter [15] of this book is available open access under a CC BY 4.0 license.

A Brief History of Timekeeping

Author : Chad Orzel
Publisher : BenBella Books
Page : 337 pages
File Size : 52,6 Mb
Release : 2022-01-25
Category : Science
ISBN : 9781953295606

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A Brief History of Timekeeping by Chad Orzel Pdf

2022 NATIONAL INDIE EXCELLENCE AWARDS WINNER — HISTORY: GENERAL ". . . inherently interesting, unique, and highly recommended addition to personal, professional, community, college, and academic library Physics of Time & Scientific Measurement history collections, and supplemental curriculum studies lists.” —Midwest Book Review "A wonderful look into understanding and recording time, Orzel’s latest is appropriate for all readers who are curious about those ticks and tocks that mark nearly every aspect of our lives." —Booklist “A thorough, enjoyable exploration of the history and science behind measuring time.” —Foreword Reviews It’s all a matter of time—literally. From the movements of the spheres to the slipperiness of relativity, the story of science unfolds through the fascinating history of humanity’s efforts to keep time. Our modern lives are ruled by clocks and watches, smartphone apps and calendar programs. While our gadgets may be new, however, the drive to measure and master time is anything but—and in A Brief History of Timekeeping, Chad Orzel traces the path from Stonehenge to your smartphone. Predating written language and marching on through human history, the desire for ever-better timekeeping has spurred technological innovation and sparked theories that radically reshaped our understanding of the universe and our place in it. Orzel, a physicist and the bestselling author of Breakfast with Einstein and How to Teach Quantum Physics to Your Dog continues his tradition of demystifying thorny scientific concepts by using the clocks and calendars central to our everyday activities as a jumping-off point to explore the science underlying the ways we keep track of our time. Ancient solstice markers (which still work perfectly 5,000 years later) depend on the basic astrophysics of our solar system; mechanical clocks owe their development to Newtonian physics; and the ultra-precise atomic timekeeping that enables GPS hinges on the predictable oddities of quantum mechanics. Along the way, Orzel visits the delicate negotiations involved in Gregorian calendar reform, the intricate and entirely unique system employed by the Maya, and how the problem of synchronizing clocks at different locations ultimately required us to abandon the idea of time as an absolute and universal quantity. Sharp and engaging, A Brief History of Timekeeping is a story not just about the science of sundials, sandglasses, and mechanical clocks, but also the politics of calendars and time zones, the philosophy of measurement, and the nature of space and time itself. For those interested in science, technology, or history, or anyone who’s ever wondered about the instruments that divide our days into moments: the time you spend reading this book may fly, and it is certain to be well spent.

The Philosophy of Space and Time

Author : Hans Reichenbach
Publisher : Courier Corporation
Page : 336 pages
File Size : 51,9 Mb
Release : 2012-03-13
Category : Science
ISBN : 9780486138039

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The Philosophy of Space and Time by Hans Reichenbach Pdf

A clear, penetrating exposition of developments in physical science and mathematics brought about by non-Euclidean geometries, including in-depth coverage of the foundations of geometry, theory of time, other topics.

The Problem of Time

Author : Edward Anderson
Publisher : Springer
Page : 920 pages
File Size : 48,8 Mb
Release : 2017-09-18
Category : Science
ISBN : 9783319588483

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The Problem of Time by Edward Anderson Pdf

This book is a treatise on time and on background independence in physics. It first considers how time is conceived of in each accepted paradigm of physics: Newtonian, special relativity, quantum mechanics (QM) and general relativity (GR). Substantial differences are moreover uncovered between what is meant by time in QM and in GR. These differences jointly source the Problem of Time: Nine interlinked facets which arise upon attempting concurrent treatment of the QM and GR paradigms, as is required in particular for a background independent theory of quantum gravity. A sizeable proportion of current quantum gravity programs - e.g. geometrodynamical and loop quantum gravity approaches to quantum GR, quantum cosmology, supergravity and M-theory - are background independent in this sense. This book's foundational topic is thus furthermore of practical relevance in the ongoing development of quantum gravity programs. This book shows moreover that eight of the nine facets of the Problem of Time already occur upon entertaining background independence in classical (rather than quantum) physics. By this development, and interpreting shape theory as modelling background independence, this book further establishes background independence as a field of study. Background independent mechanics, as well as minisuperspace (spatially homogeneous) models of GR and perturbations thereabout are used to illustrate these points. As hitherto formulated, the different facets of the Problem of Time greatly interfere with each others' attempted resolutions. This book explains how, none the less, a local resolution of the Problem of Time can be arrived at after various reconceptualizations of the facets and reformulations of their mathematical implementation. Self-contained appendices on mathematical methods for basic and foundational quantum gravity are included. Finally, this book outlines how supergravity is refreshingly different from GR as a realization of background independence, and what background independence entails at the topological level and beyond.

The Singular Universe and the Reality of Time

Author : Roberto Mangabeira Unger,Lee Smolin
Publisher : Cambridge University Press
Page : 567 pages
File Size : 53,7 Mb
Release : 2015
Category : Science
ISBN : 9781107074064

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The Singular Universe and the Reality of Time by Roberto Mangabeira Unger,Lee Smolin Pdf

Roberto Mangabeira Unger and Lee Smolin argue for a revolution in our cosmological ideas. Ideal for non-scientists, physicists and cosmologists.

Next Time You See the Moon

Author : Emily Rachel Morgan
Publisher : NSTA Press
Page : 32 pages
File Size : 52,9 Mb
Release : 2014-07-01
Category : Education
ISBN : 9781938946554

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Next Time You See the Moon by Emily Rachel Morgan Pdf

This fascinating book will stay with children every time they gaze up at the night sky. Through vivid pictures and engaging explanations, children will learn about many of the Moon’s mysteries: what makes it look like a silvery crescent one time and a chalk-white ball a few nights later, why it sometimes appears in the daytime, where it gets its light, and how scientists can predict its shape on your birthday a thousand years from now. Next Time You See the Moon is an ideal way to explain the science behind the shape of the Moon and bring about an evening outing no child—or grown-up—will soon forget. Awaken a sense of wonder in a child with the Next Time You See series from NSTA Kids. The books will inspire elementary-age children to experience the enchantment of everyday phenomena such as sunsets, seashells, fireflies, pill bugs, and more. Free supplementary activities are available on the NSTA website. Especially designed to be experienced with an adult—be it a parent, teacher, or friend—Next Time You See books serve as a reminder that you don’t have to look far to find something remarkable in nature.

God and the Cosmos

Author : Harry Lee Poe,Jimmy H. Davis
Publisher : InterVarsity Press
Page : 305 pages
File Size : 52,5 Mb
Release : 2012-02-16
Category : Religion
ISBN : 9780830839544

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God and the Cosmos by Harry Lee Poe,Jimmy H. Davis Pdf

Theologian Harry Lee Poe and chemist Jimmy H. Davis argue that God's interaction with our world is a possibility affirmed equally by the Bible and the contemporary scientific record. Rather than confirming that the cosmos is closed to the actions of the divine, advancing scientific knowledge seems to indicate that the nature of the universe is actually open to the unique type of divine activity portrayed in the Bible.

From Eternity to Here

Author : Sean Carroll
Publisher : Penguin
Page : 448 pages
File Size : 55,6 Mb
Release : 2010-01-07
Category : Science
ISBN : 9781101152157

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From Eternity to Here by Sean Carroll Pdf

A rising star in theoretical physics offers his awesome vision of our universe and beyond, all beginning with a simple question: Why does time move forward? Time moves forward, not backward—everyone knows you can’t unscramble an egg. 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. Watch a Video

The Mystery of Existence

Author : John Leslie,Robert Lawrence Kuhn
Publisher : John Wiley & Sons
Page : 336 pages
File Size : 47,7 Mb
Release : 2013-04-22
Category : Philosophy
ISBN : 9780470673553

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The Mystery of Existence by John Leslie,Robert Lawrence Kuhn Pdf

This compelling study of the origins of all that exists, including explanations of the entire material world, traces the responses of philosophers and scientists to the most elemental and haunting question of all: why is anything here—or anything anywhere? Why is there something rather than nothing? Why not nothing? It includes the thoughts of dozens of luminaries from Plato and Aristotle to Aquinas and Leibniz to modern thinkers such as physicists Stephen Hawking and Steven Weinberg, philosophers Robert Nozick and Derek Parfit, philosophers of religion Alvin Plantinga and Richard Swinburne, and the Dalai Lama. The first accessible volume to cover a wide range of possible reasons for the existence of all reality, from over 50 renowned thinkers, including Plato, Aristotle, Aquinas, Descartes, Leibniz, Hume, Bertrand Russell, Stephen Hawking, Steven Weinberg, Robert Nozick, Derek Parfit, Alvin Plantinga, Richard Swinburne, John Polkinghorne, Paul Davies, and the Dalai Lama Features insights by scientists, philosophers, and theologians Includes informative and helpful editorial introductions to each section Provides a wealth of suggestions for further reading and research Presents material that is both comprehensive and comprehensible

The Time Machine Hypothesis

Author : Damien Broderick
Publisher : Springer
Page : 246 pages
File Size : 43,8 Mb
Release : 2019-07-12
Category : Science
ISBN : 9783030161781

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The Time Machine Hypothesis by Damien Broderick Pdf

Every age has characteristic inventions that change the world. In the 19th century it was the steam engine and the train. For the 20th, electric and gasoline power, aircraft, nuclear weapons, even ventures into space. Today, the planet is awash with electronic business, chatter and virtual-reality entertainment so brilliant that the division between real and simulated is hard to discern. But one new idea from the 19th century has failed, so far, to enter reality—time travel, using machines to turn the time dimension into a two-way highway. Will it come true, as foreseen in science fiction? Might we expect visits to and from the future, sooner than from space? That is the Time Machine Hypothesis, examined here by futurist Damien Broderick, an award-winning writer and theorist of the genre of the future. Broderick homes in on the topic through the lens of science as well as fiction, exploring some fifty different time-travel scenarios and conundrums found in the science fiction literature and film.