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The Nature of Space and Time (Princeton Science Library) [Englisch] [Taschenbuch]

Stephen Hawking , Roger Penrose
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Kurzbeschreibung

28. Februar 2010 Princeton Science Library
Einstein said that the most incomprehensible thing about the universe is that it is comprehensible. But was he right? Can the quantum theory of fields and Einstein's general theory of relativity, the two most accurate and successful theories in all of physics, be united in a single quantum theory of gravity? Can quantum and cosmos ever be combined? On this issue, two of the world's most famous physicists-Stephen Hawking (A Brief History of Time) and Roger Penrose (The Emperor's New Mind and Shadows of the Mind)-disagree. Here they explain their positions in a work based on six lectures with a final debate, all originally presented at the Isaac Newton Institute for Mathematical Sciences at the University of Cambridge. How could quantum gravity, a theory that could explain the earlier moments of the big bang and the physics of the enigmatic objects known as black holes, be constructed? Why does our patch of the universe look just as Einstein predicted, with no hint of quantum effects in sight? What strange quantum processes can cause black holes to evaporate, and what happens to all the information that they swallow? Why does time go forward, not backward? In this book, the two opponents touch on all these questions. Penrose, like Einstein, refuses to believe that quantum mechanics is a final theory. Hawking thinks otherwise, and argues that general relativity simply cannot account for how the universe began. Only a quantum theory of gravity, coupled with the no-boundary hypothesis, can ever hope to explain adequately what little we can observe about our universe. Penrose, playing the realist to Hawking's positivist, thinks that the universe is unbounded and will expand forever. The universe can be understood, he argues, in terms of the geometry of light cones, the compression and distortion of spacetime, and by the use of twistor theory.

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Produktinformation

  • Taschenbuch: 156 Seiten
  • Verlag: Princeton University Press (28. Februar 2010)
  • Sprache: Englisch
  • ISBN-10: 0691145709
  • ISBN-13: 978-0691145709
  • Größe und/oder Gewicht: 23,1 x 15,2 x 1,3 cm
  • Durchschnittliche Kundenbewertung: 3.5 von 5 Sternen  Alle Rezensionen anzeigen (4 Kundenrezensionen)
  • Amazon Bestseller-Rang: Nr. 265.666 in Fremdsprachige Bücher (Siehe Top 100 in Fremdsprachige Bücher)
  • Komplettes Inhaltsverzeichnis ansehen

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Produktbeschreibungen

Amazon.de

Who doesn't love a good argument? When physics heavyweights Stephen W. Hawking and Roger Penrose delivered three sets of back-and-forth lectures capped by a final debate at Cambridge's Isaac Newton Institute, the course of modern cosmological thinking was at stake. As it happens, The Nature of Space and Time, which collects these remarks, suggests that little has changed from the days when Einstein challenged Bohr by refusing to believe that God plays dice. The math is more abstruse, the arguments more refined, but the argument still hinges on whether our physical theories should be expected to model reality or merely predict measurements.

Hawking, clever and playful as usual, sides with Bohr and the Copenhagen interpretation and builds a strong case for quantum gravity. Penrose, inevitably a bit dry in comparison, shares Einstein's horror at such intuition-blasting thought experiments as Schrödinger's long-suffering cat--and scores just as many points for general relativity. The math is tough going for lay readers, but a few leaps of faith will carry them through to some deeply thought-provoking rhetoric. Though no questions find final answers in The Nature of Space and Time, the quality of discourse should be enough to satisfy the scientifically curious. --Rob Lightner -- Dieser Text bezieht sich auf eine vergriffene oder nicht verfügbare Ausgabe dieses Titels.

Pressestimmen

"This elegant little volume provides a clear account of two approaches to some of the greatest unsolved problems of gravitation and cosmology."--John Barrow, New Scientist "A debate between Hawking and Penrose ... raises the reader's expectations of a lively interaction, and this is fully bourne in the transcribed discussion... Hawking's effervescent sense of humour frequently enlivens the text."--Joseph Silk, Times Higher Education Praise for Princeton's previous editions:: "If there were such a thing as the World Professional Heavyweight Theory Debating Society, this would be the title bout."--Christopher Dornan, Toronto Globe & Mail Praise for Princeton's previous editions: "This is a very courteous and intellectually stimulating exchange between two first-rate minds."--Library Journal Praise for Princeton's previous editions: "This is an interesting book to read now, but it promises to become an even more interesting book for future generations of physicists."--Robert M. Wald, Science Praise for Princeton's previous editions: "As well as providing an accurate scientific record of the lectures, the text has lost none of the drama of the original occasion, which stemmed from the almost antithetical views of the two protagonists on almost everything except the classical theory of general relativity."--Gary Gibbons, Physics World Praise for Princeton's previous editions: "I found great satisfaction and not inconsiderable benefit from my efforts... The clarity and brilliance of Hawking's logic would break through in simple straightforward terms... This provided a real thrill."--Lucy Horwitz, Boston Book Review

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Kundenrezensionen

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3 von 3 Kunden fanden die folgende Rezension hilfreich
3.0 von 5 Sternen Interesting but not Great 25. Juli 2000
Von D. Harp
Format:Gebundene Ausgabe
In spite of the errors mentioned in another review the discussion was fairly interesting but not as great a "debate" as I anticipated. I'd spend my money on Penrose's "The Emporer's New Mind" before this one. For those interested in Black Holes, Kip Thorne's "Black Holes and Time Warps ..." is exceptionally well written and rewarding for the reader. For the technically [mathematically] apt who wants an fascinating treatice on spacetime, try John Wheeler and Ignazio Ciufolini's book on Geometrodynamics (Princeton Univ. Press).
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Von Ein Kunde
Format:Gebundene Ausgabe
Apart from the elementary, undergraduate level errors in thermodynamics, e.g. the first law of thermodynamics on page 24 is NOT the first law, nor is it a combination of the first and second laws due to a sign error; the Helmholtz free energy on page 50 is NOT the Helmholtz free energy again due to a sign error; the statement on page 135 that all Einstein needed not to go fishing after 1925 was 'Stephen's discovery, fifty-five years later, of black hole radiation' is offensive! Hawking's great surprise, on page 43, that black hole radiation emission was exactly thermal with a temperature derived from the Bekenstein-Hawking expression for black hole entropy in terms of the area of the horizon is ludicrous because it has to correspond to the entropy of black body radiation, which it doesn't. The above are merely examples which serve to call into question the contributions of these two researchers and certainly raise grave doubts concerning the worth of this book.
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5.0 von 5 Sternen Hawkingisch! 10. Dezember 2012
Format:Taschenbuch|Verifizierter Kauf
Das Papier cover-Buch ist sehr güstig, besonders für kleine Budgets. Ist trotzdem in berdigenden Zustand. Ich habe es sehr gern gelesen.
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5.0 von 5 Sternen A DEBATE OF THE CENTURY 8. März 1997
Von Ein Kunde
Format:Gebundene Ausgabe
I dug deeper into my sleeping bag and looked out into the universe. I was thankful for the Earth's attraction which held me close. The air was so thick with stars I was almost breathing them. Was there an end to the universe? How much stuff was really out there? How did it all begin? Why can't we remember the future or relive our mistakes?

Well, these questions didn't keep me awake for very long that night, but "The Nature of Space and Time" is a step toward answering them. This book, covering several lectures and a final debate between Stephen Hawking and Roger Penrose, provides insight into the prevailing wisdom.

They are two of the greatest minds of our century. Stephen is interested in answers to the extent that they lead toward practical or predictable solutions. Roger is interested in answers to the extent that they lead to a more complete understanding of reality. This difference between them makes the debate a lively and at times amusing one.

Copyright 1997 by Barbara Grant Ashton
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Amazon.com: 3.2 von 5 Sternen  15 Rezensionen
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4.0 von 5 Sternen A debate between two strong personalities in physics 5. August 2003
Von Charles Ashbacher - Veröffentlicht auf Amazon.com
Format:Gebundene Ausgabe
The current understanding of the physical structure of the universe is bipolar. There is Einstein's theory of relativity, which explains the macroscopic behavior of the universe to many places to the right of the decimal point. At the other end of the size spectrum, there is the quantum theory of fields, which explains the observed behavior of fundamental particles to many places to the right of the decimal point. Although one should always be very reluctant to state such a position, the resolution of this bipolar state into a unified one may be the last, great discovery of physics.
The purpose of this book is to present a debate between Stephen Hawking and Roger Penrose concerning the possibility of the issue being resolved, and in what manner. It is a series of six short lectures, three from each man and ends with a brief debate between them. These lectures are not for the general audience, as each lecturer assumes a fundamental understanding of general relativity and quantum theory. Nevertheless, there is a great deal of explanation, including diagrams, in the lectures. Therefore, it is possible to understand the material if you have a basic understanding of the two main topics. Without that, don't bother opening the book.
Of course, the issue is not resolved, as that must wait for a later date. It is interesting that Hawking tends to emphasize the points of difference, while Penrose goes to some length to describe how similar their positions are. Penrose continues with the position of Albert Einstein, in that he argues that quantum mechanics is not a final theory, but only the "gross" appearance of much subtler events. Hawking believes otherwise, arguing that the probabilistic features of quantum mechanics is the way nature does things, and there is no underlying mechanism yet to be discovered that will remove them.
The arguments are strong, yet unconvincing. Not due to their lack of power, but because they are made by two equally strong and forceful personalities. When two such powers collide, there is rarely resolution. Nevertheless, the debate sheds a great deal of light on the current state of thinking in physics, and points out some ways in which it may be resolved.
56 von 66 Kunden fanden die folgende Rezension hilfreich
3.0 von 5 Sternen hold on for dear life 9. März 2002
Von Bryan Erickson - Veröffentlicht auf Amazon.com
Format:Taschenbuch
This was an early attempt to capitalize on Hawking's commercial success with the Brief History. Roger Penrose, Hawking's PhD advisor, has also written some really fascinating books for lay readers on philosophical implications of physics such as on the nature of intelligence. However, combining the two in a debate, the form of this book, cancels out the reader-friendly accessibility of their solo works as their egos take charge and they try to outperform each other. It makes sense after the fact that if they're debating, they must be discussing matters on which they disagree, and since physics is so well settled and understood on all but the most esoteric and advanced questions, the subject matter of their disagreements must lie in that advanced realm. Of course, "advanced" is a vastly relative term to apply to physics, since many ordinary readers would balk at any physics material. But I have a degree in physics, albeit only a BS - and after the initial material I have to struggle to follow anything they're saying! They should stamp this book's cover with a caveat emptor; this is no "Brief History of Time" or "Elegant Universe." They even mention at the outset that they assume the reader has a basic understanding of physics, but these guys' idea of a basic understanding is a Ph.D. specializing in general relativity. Having said all that, the book still makes for heady reading from what I could pick up here and there, so it's a thrill if you're up to it.
42 von 53 Kunden fanden die folgende Rezension hilfreich
3.0 von 5 Sternen Interesting but not Great 25. Juli 2000
Von D. Harp - Veröffentlicht auf Amazon.com
Format:Gebundene Ausgabe
In spite of the errors mentioned in another review the discussion was fairly interesting but not as great a "debate" as I anticipated. I'd spend my money on Penrose's "The Emporer's New Mind" before this one. For those interested in Black Holes, Kip Thorne's "Black Holes and Time Warps ..." is exceptionally well written and rewarding for the reader. For the technically [mathematically] apt who wants an fascinating treatice on spacetime, try John Wheeler and Ignazio Ciufolini's book on Geometrodynamics (Princeton Univ. Press).
4 von 4 Kunden fanden die folgende Rezension hilfreich
4.0 von 5 Sternen Very interesting 16. November 2010
Von Light Pebble - Veröffentlicht auf Amazon.com
Format:Taschenbuch
I really enjoyed this book. It goes beyond the popular accounts of Hawking's and Penrose's ideas, without going into all the technical detail. You get to find out (sort of) why Hawking attributes entropy to black holes, and his explanation of why we don't see the galaxies in quantum superposition. And Penrose's ideas about twistors and quantizing them, and people's caveats about twistor theory.
It would help to be familiar with:
- Feynman integral over paths
- what is the action, and how it becomes a phase in quantum mechanics
- Euler characteristic
- special relativity, what spacelike, timelike and null mean
- Basic topology and analysis. Like what does "compact" imply.
- thermodynamic partition function
- contour integral in complex analysis
- what is a manifold
- how you find the expectation of an operator in quantum mechanics
- decoherence in quantum mechanics
- what is a conformal map
That sort of thing.
2 von 2 Kunden fanden die folgende Rezension hilfreich
4.0 von 5 Sternen Fascinating, yet complex. 22. Februar 2007
Von Peidyen - Veröffentlicht auf Amazon.com
Format:Taschenbuch
I found this to be a fascinating overview of some of the major issues in cosmology from both Hawking and Penroses point of view. What is amazing is the actual level of agreement between the two. Perhaps only the real physicists appreciate the nuances of their differences of opinion.

I would recommend this book for anyone who's gone to the trouble of picking up a basic understanding of relativity ( special and/or general ).

The math is not terrbily daunting in most places and you get a real overview for the big picture of the state of relativity and quantum gravity.
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