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Black Holes And Baby Universes And Other Essays

Author : Stephen Hawking
ISBN : 9780307790453
Genre : Science
File Size : 88. 24 MB
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NEW YORK TIMES BESTSELLER THIRTEEN EXTRAORDINARY ESSAYS SHED NEW LIGHT ON THE MYSTERIES OF THE UNIVERSE—AND ON ONE OF THE MOST BRILLIANT THINKERS OF OUR TIME. In his phenomenal bestseller A Brief History of Time, Stephen Hawking literally transformed the way we think about physics, the universe, reality itself. In these thirteen essays and one remarkable extended interview, the man widely regarded as the most brilliant theoretical physicist since Einstein returns to reveal an amazing array of possibilities for understanding our universe. Building on his earlier work, Hawking discusses imaginary time, how black holes can give birth to baby universes, and scientists’ efforts to find a complete unified theory that would predict everything in the universe. With his characteristic mastery of language, his sense of humor and commitment to plain speaking, Stephen Hawking invites us to know him better—and to share his passion for the voyage of intellect and imagination that has opened new ways to understanding the very nature of the cosmos. From the Trade Paperback edition.

Black Holes And Baby Universes And Other Essays

Author : Stephen Hawking
ISBN : 0553374117
Genre : Science
File Size : 40. 29 MB
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NEW YORK TIMES BESTSELLER * Thirteen extraordinary essays shed new light on the mystery of the universe--and on one of the most brilliant thinkers of our time. In his phenomenal bestseller A Brief History of Time, Stephen Hawking literally transformed the way we think about physics, the universe, reality itself. In these thirteen essays and one remarkable extended interview, the man widely regarded as the most brilliant theoretical physicist since Einstein returns to reveal an amazing array of possibilities for understanding our universe. Building on his earlier work, Hawking discusses imaginary time, how black holes can give birth to baby universes, and scientists' efforts to find a complete unified theory that would predict everything in the universe. With his characteristic mastery of language, his sense of humor and commitment to plain speaking, Stephen Hawking invites us to know him better--and to share his passion for the voyage of intellect and imagination that has opened new ways to understanding the very nature of the cosmos.

Black Holes Baby Universes And Random Matrices

Author : Philip Saad
ISBN : OCLC:1183028780
Genre :
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There is a lot of evidence that black holes follow the usual rules of quantum mechanics, and exhibit all of the fundamental properties of quantum systems such as a discrete set of energy levels. However, many of these properties are difficult to see directly in gravity; there is an apparent tension between the gravitational description of black holes in terms of smooth geometry and the discrete 'quantum' aspects of quantum mechanics. In this work we focus on understanding certain probes of the discreteness of the black hole energy spectrum which exhibit this tension, such as an averaged version of the two-point function of operators widely separated in time outside of a black hole in AdS space. The chaotic dynamics of black holes indicates that its energy levels should have random matrix statistics, and its energy eigenstates should obey the Eigenstate Thermalization Hypothesis. These expectations allow us to make precise predictions for the behavior of our probes. We find strong evidence that contributions from spacetime geometries with nontrivial topology, and even arbitrary numbers of disconnected components, are responsible for reproducing the expected behavior of our probes. Physically, these contributions correspond to including effects from the absorption and emission of closed 'baby' universes from the black hole spacetime. These processes have a small amplitude, but may provide the dominant contribution to the transitions between very distinct states of the black hole.

Black Holes And Baby Universes And Other Essays

Author : Stephen Hawking
ISBN : 9780553406634
Genre : Cosmology
File Size : 55. 34 MB
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Readers worldwide know the work of Stephen Hawking through his phenomenal bestseller A Brief History of Time. In this collection of essays and other pieces - on subjects that range from warmly personal to the wholly scientific- he is revealed variously as the scientist, the man, the concerned world citizen, and - as always - the rigorous and imaginative thinker. Whether remembering his first experience of nursery school; puncturing the arrogance of those who think science can best be understood only by other scientists and should be left to them; exploring the origins and the future of the universe; or reflecting on the phenomenon of A Brief History of Time, Stephen's wit, directness of style and absence of pomp are vital characteristics at all times.

Hawking On The Big Bang And Black Holes

Author : Stephen W. Hawking
ISBN : 9810210787
Genre : Science
File Size : 69. 47 MB
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Stephen Hawking, the Lucasian Professor of Mathematics at Cambridge University, has made important theoretical contributions to gravitational theory and has played a major role in the development of cosmology and black hole physics. Hawking's early work, partly in collaboration with Roger Penrose, showed the significance of spacetime singularities for the big bang and black holes. His later work has been concerned with a deeper understanding of these two issues. The work required extensive use of the two great intellectual achievements of the first half of the Twentieth Century: general relativity and quantum mechanics; and these are reflected in the reprinted articles. Hawking's key contributions on black hole radiation and the no-boundary condition on the origin of the universe are included. The present compilation of Stephen Hawking's most important work also includes an introduction by him, which guides the reader though the major highlights of the volume. This volume is thus an essentialitem in any library and will be an important reference source for those interested in theoretical physics and applied mathematics. It is an excellent thing to have so many of Professor Hawking's most important contributions to the theory of black holes and space-time singularities all collected together in one handy volume. I am very glad to have them". Roger Penrose (Oxford) "This was an excellent idea to put the best papers by Stephen Hawking together. Even his papers written many years ago remain extremely useful for those who study classical and quantum gravity. By watching the evolution of his ideas one can get a very clear picture of the development of quantum cosmology during thelast quarter of this century". Andrei Linde (Stanford) "This review could have been quite short: 'The book contains a selection of 21 of Stephen Hawking's most significant papers with an overview written by the author'. This w

Black Holes

Author : Stephen Hawking
ISBN : 9780399179006
Genre : Science
File Size : 79. 71 MB
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The legendary physicist explores his favorite subject in a pair of enlightening, accessible, and cleverly illustrated essays for curious readers, originally delivered as BBC lectures. “It is said that fact is sometimes stranger than fiction, and nowhere is that more true than in the case of black holes. Black holes are stranger than anything dreamed up by science-fiction writers, but they are firmly matters of science fact.” For decades, Stephen Hawking has been fascinated by black holes. He believes that if we understood the challenges they pose to the very nature of space and time, we could unlock the secrets of the universe. In these conversational pieces, Hawking’s sense of wonder is infectious as he holds forth on what we know about black holes, what we still don’t know, and theoretical answers to more specific questions, such as: What would happen if you ever got sucked into one? Annotated and with an introduction by BBC News science editor David Shukman, featuring whimsical and illuminating illustrations, Black Holes offers a candid peek into one of the great scientific mysteries of all time. Praise for Stephen Hawking “[Hawking] can explain the complexities of cosmological physics with an engaging combination of clarity and wit. . . . His is a brain of extraordinary power.”—The New York Review of Books “Hawking clearly possesses a natural teacher’s gifts—easy, good-natured humor and an ability to illustrate highly complex propositions with analogies plucked from daily life.”—The New York Times “A high priest of physics, one of a handful of theorists who may be on the verge of reading God’s mind.”—Los Angeles Times

The Universe In A Nutshell

Author : Stephen W. Hawking
ISBN : 9780553802023
Genre : Science
File Size : 43. 35 MB
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The author explores recent scientific breakthroughs in the fields of supergravity, supersymmetry, quantum theory, superstring theory, and p-branes as he searches for the Theory of Everything that lies at the heart of the cosmos.

A Brief History Of Time

Author : Stephen W. Hawking
ISBN : 9780553380163
Genre : Science
File Size : 89. 65 MB
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An anniversary edition of a now-classic survey of the origin and nature of the universe features a new introduction by the author and a new chapter on the possibility of time travel and "wormholes" in space

The Fire In The Equations

Author : Kitty Ferguson
ISBN : 9781932031676
Genre : Religion
File Size : 78. 72 MB
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“ In this beautifully and intelligently written book, Ferguson not only reports on some of the intellectual tremors jolting the world of thinking women and men, but also considers the basic questions with penetrating analysis, yet at a very readable level. . . . An excellent book.” —Choice Heralded for its readability and scholarship, The Fire in the Equations offers a fascinating discussion of scientific discoveries and their impact on our beliefs. The book’s title is derived from Dr. Stephen Hawking’s pondering, “What is it that breathes fire into the equations and makes a universe for them to describe?” Originally published in the U.S. in 1995, it provides an excursion through new theories of quantum physics and cosmology, ranging from the nature of time, the big bang, the “unreasonable effectiveness” of mathematics, laws of nature and their possible relation to God, chaos theory, black holes, Heisenberg’s uncertainty principle, particle physics, Darwin's theory of evolution, and the role of God in all these equations. It even raises such questions as “how God might answer prayers” from the point of view of physics. While she gives no absolute answers, Kitty Ferguson takes the reader through a world of paradoxes and improbabilities, explaining how it is possible to believe both in a pre-determined universe and in free will as a theory of human behavior. She concludes that what we know about science doesn't necessarily make God inevitable, but does not rule God out either.

The Illustrated A Brief History Of Time

Author : Stephen W. Hawking
ISBN : 9780553103748
Genre : Science
File Size : 52. 18 MB
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An illustrated, large-format edition of the best-seller has been expanded to encompass the remarkable advances that have occurred in science and technology over the past eight years, with a new chapter on Wormholes and Time Travel and more than 240 full-color, captioned illustrations. 100,000 first printing.

Euclidean Quantum Gravity

Author : G. W. Gibbons
ISBN : 9810205163
Genre : Science
File Size : 57. 5 MB
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The Euclidean approach to Quantum Gravity was initiated almost 15 years ago in an attempt to understand the difficulties raised by the spacetime singularities of classical general relativity which arise in the gravitational collapse of stars to form black holes and the entire universe in the Big Bang. An important motivation was to develop an approach capable of dealing with the nonlinear, non-perturbative aspects of quantum gravity due to topologically non-trivial spacetimes. There are important links with a Riemannian geometry. Since its inception the theory has been applied to a number of important physical problems including the thermodynamic properties of black holes, quantum cosmology and the problem of the cosmological constant. It is currently at the centre of a great deal of interest.This is a collection of survey lectures and reprints of some important lectures on the Euclidean approach to quantum gravity in which one expresses the Feynman path integral as a sum over Riemannian metrics. As well as papers on the basic formalism there are sections on Black Holes, Quantum Cosmology, Wormholes and Gravitational Instantons.

Big Bang Black Holes

Author : Jon Schiller
ISBN : 9781452865522
Genre : Science
File Size : 90. 56 MB
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Your author decided to write this book about the Big Bang & Black Holes after attending a Caltech Associates dinner in which Dr. Sean Carroll gave a dynamic talk entitled: The Origin of the Universe and the Arrow of Time. During his lecture Dr. Carroll mentioned the Baby Universes concept of Stephen Hawking, a theory described in this book.

Three Hundred Years Of Gravitation

Author : S. W. Hawking
ISBN : 0521379768
Genre : Science
File Size : 90. 96 MB
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A collection of reviews by prominent researchers in cosmology, relativity and particle physics commemorates the 300th anniversary of Newton's Philosophiae Naturalis Principia Mathematica.

The Future Of Spacetime

Author : Stephen W. Hawking
ISBN : 0393020223
Genre : Science
File Size : 22. 63 MB
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A group of leading physicists--Stephen Hawking, Kip S. Thorne, Igor Novikov, Timothy Ferris, and Alan Lightman--paints a vivid portrait of the possible future of black holes, gravity holes, and time travel in six readible essays that explore the deepest mysteries of the universe.

My Brief History

Author : Stephen Hawking
ISBN : 9780345539137
Genre : Science
File Size : 20. 1 MB
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NATIONAL BESTSELLER Stephen Hawking has dazzled readers worldwide with a string of bestsellers exploring the mysteries of the universe. Now, for the first time, perhaps the most brilliant cosmologist of our age turns his gaze inward for a revealing look at his own life and intellectual evolution. My Brief History recounts Stephen Hawking’s improbable journey, from his postwar London boyhood to his years of international acclaim and celebrity. Lavishly illustrated with rarely seen photographs, this concise, witty, and candid account introduces readers to a Hawking rarely glimpsed in previous books: the inquisitive schoolboy whose classmates nicknamed him Einstein; the jokester who once placed a bet with a colleague over the existence of a particular black hole; and the young husband and father struggling to gain a foothold in the world of physics and cosmology. Writing with characteristic humility and humor, Hawking opens up about the challenges that confronted him following his diagnosis of ALS at age twenty-one. Tracing his development as a thinker, he explains how the prospect of an early death urged him onward through numerous intellectual breakthroughs, and talks about the genesis of his masterpiece A Brief History of Time—one of the iconic books of the twentieth century. Clear-eyed, intimate, and wise, My Brief History opens a window for the rest of us into Hawking’s personal cosmos.

Stephen Hawking Deluxe Set

Author : Stephen W. Hawking
ISBN : 0553676431
Genre :
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The Black Hole War

Author : Leonard Susskind
ISBN : 9780316032698
Genre : Science
File Size : 34. 64 MB
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What happens when something is sucked into a black hole? Does it disappear? Three decades ago, a young physicist named Stephen Hawking claimed it did, and in doing so put at risk everything we know about physics and the fundamental laws of the universe. Most scientists didn't recognize the import of Hawking's claims, but Leonard Susskind and Gerard t'Hooft realized the threat, and responded with a counterattack that changed the course of physics. The Black Hole War is the thrilling story of their united effort to reconcile Hawking's revolutionary theories of black holes with their own sense of reality -- effort that would eventually result in Hawking admitting he was wrong, paying up, and Susskind and t'Hooft realizing that our world is a hologram projected from the outer boundaries of space. A brilliant book about modern physics, quantum mechanics, the fate of stars and the deep mysteries of black holes, Leonard Susskind's account of the Black Hole War is mind-bending and exhilarating reading.

Stephen Hawking S A Brief History Of Time

Author : Stephen W. Hawking
ISBN : 0553077724
Genre : Nature
File Size : 71. 18 MB
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Interviews with Hawking, his family, colleagues, and friends provide a close-up look at one of the world's greatest physicists, as well as a lucid explanation of his major theories

Orbit Stephen Hawking Riddles Of Time Space

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ISBN :
Genre : Comics & Graphic Novels
File Size : 49. 97 MB
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Stephen Hawking is one of the most brilliant minds of this century. StormFront Productions is bringing you his life story in this unique comic book format. Find out all about the man the myth and the legend!

Brief Answers To The Big Questions

Author : Stephen Hawking
ISBN : 9781473696006
Genre : Biography & Autobiography
File Size : 33. 96 MB
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THE NO.1 SUNDAY TIMES BESTSELLER 'A beautiful little book by a brilliant mind' DAILY TELEGRAPH 'Effortlessly instructive, absorbing, up to the minute and - where it matters - witty' GUARDIAN The world-famous cosmologist and #1 bestselling author of A Brief History of Time leaves us with his final thoughts on the universe's biggest questions in this brilliant posthumous work. Is there a God? How did it all begin? Can we predict the future? What is inside a black hole? Is there other intelligent life in the universe? Will artificial intelligence outsmart us? How do we shape the future? Will we survive on Earth? Should we colonise space? Is time travel possible? Throughout his extraordinary career, Stephen Hawking expanded our understanding of the universe and unravelled some of its greatest mysteries. But even as his theoretical work on black holes, imaginary time and multiple histories took his mind to the furthest reaches of space, Hawking always believed that science could also be used to fix the problems on our planet. And now, as we face potentially catastrophic changes here on Earth - from climate change to dwindling natural resources to the threat of artificial super-intelligence - Stephen Hawking turns his attention to the most urgent issues for humankind. Wide-ranging, intellectually stimulating, passionately argued, and infused with his characteristic humour, Brief Answers to the Big Questions, the final book from one of the greatest minds in history, is a personal view on the challenges we face as a human race, and where we, as a planet, are heading next. A percentage of all royalties will go to charity.

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