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The Nature of Space and Time

3.99 of 5 stars 3.99  ·  rating details  ·  600 ratings  ·  31 reviews
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 th ...more
ebook, 144 pages
Published February 8th 2010 by Princeton University Press (first published 1996)
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(showing 1-30 of 1,872)
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Ryan
May 13, 2008 Ryan rated it 4 of 5 stars  ·  review of another edition
Recommends it for: students of physics
Considerably more technical than either Hawking or Penrose's lay material (A Brief History of Time etc.) If you're seeking an introduction to the controversy behind Hawking's quantum gravity speculations (Hawking radiation, the no-hair theorem) then this is a good start. Is quantum information lost in black hole evaporation? There are still no solid answers to the questions posed here.
albin james
Rows and flows of angel hair
And ice cream castles in the air
And feather canyons everywhere
I've looked at clouds that way

But now they only block the sun
They rain and snow on everyone
So many things I would have done
But clouds got in my way

I've looked at clouds from both sides now
From up and down, and still somehow
It's cloud illusions I recall
I really don't know clouds at all

Moons and Junes and Ferris wheels
The dizzy dancing way you feel
As every fairy tale comes real
I've looked at love that way

But
...more
Caitee Nigro
This book was recommended to me by a good friend a while back, who insisted I purchase my own copy because he couldn't stand to part - even temporarily - with his. So I did. Maybe a month later, co-author Sir Roger Penrose spoke at a local university and I was fortunate enough to see him, as well as have my very untouched copy of The Nature of Space and Time signed by him. Only recently did I read it, and I'd be lying if I said I could comprehend more than half on my own.
Reading this book, more
...more
Artemis Fowl
We can understand the cosmos ? Will we ever find a general pattern by which explain what surrounds us ? Relativity and modern quantum theory will never get to a unification ? Think about the cosmos in terms of how much is the right way ? Why time flows in only one direction ? Stephen Hawking and Roger Penrose have charged with the daunting task of being able to give some clarification and some certainty about questions of this magnitude by comparing their ideas and reflections on cosmology, quan ...more
Todd
"Time is the fire in which we burn." Delmore Schwartz

"...time is a companion who goes with us on the journey and reminds us to cherish every moment, because it will never come again." Jean-Luc Picard

I found the information in this set of 3 lectures to be somewhat interesting but because I am not a student (or practitioner) of science I found it to be a bit too specific to the field of physics/quantum mechanics/advanced maths/etc. for my general interest.

That said, one big problem I have with thi
...more
Stefano
E' difficile definire questo libro un libro di divulgazione. In realt si tratta di una serie di lezioni (tre a testa pi una discussione finale) in cui gli autori dimostrano le proprie teorie in merito alla natura dello spaziotempo attraverso lo studio delle singolarit nell'ambito della meccanica quantistica e della relativit generale. Per farlo fanno ampio uso di strumenti matematici molto complessi. Per comprendere appieno le dimostrazioni necessaria una conoscenza specialistica di matematica ...more
Derek
I gave it a good college try, but was immediately swamped by the intense theoretical physics and deep mathematics involved. As a series of lectures between the two physicists as they voice disagreements about the nature of the universe, it was interesting to be a sort of fly on the wall, to see what these big brains talk about when the rest of us aren't around. On the other hand, they're discussing these things at their own level and not the level of a layman, so one might as well be a fly on th ...more
Jan
I listen to half of this and gave up. Way over my head, especially for vacation.
Jeff
This is collection of essays is an argument between Hawking and Penrose about the origin and ultimate fate of the universe, plus some entropy notions about black holes. I will say this: Hawking throws equations out there like you flat out know what he's talking about. His disclaimer is that he assumes you know some math and quantum mechanics. The QM arguments were easy enough, and while I've seen some topology before, I wasn't hugely familiar with GR, so his essays were sometimes hard to follow. ...more
Peter
As I suspected I got less than half of it.
But the interplay between Hawking and Penrose playing of each other is amazing.
Akshat Tandon
I could never understand what's in there!
Ur Salem
Aug 15, 2014 Ur Salem is currently reading it  ·  review of another edition
Shelves: cosmology
Hawking negates the debate's setting of his own with-Penrose coauthored book by accusing Penrose for being a Platonist on page 4. This should strike you as odd when you realise that Penrose represents Einstein's position (i.e., realist) and yet Hawking is the one speaking on behalf of Bohr!
Hayley
As much as I enjoyed the concepts that were meticulously laid out in this book; it hurt to read. The book required a lot from the reader to understand and keep up with the complex theories, unless of course you brought along your PHD in experimental physics and cosmology, which I did not.
Hugo Rodrigues
Este livro é um conjunto de ensaios escritos por Roger Penrose e provados (acabados) pelo Stephen Hawking, embora não concordem totalmente um com o outro, provaram que as singularidades(buracos- negros) resultam do colapso de um estrela (sol Gigante), um livro muito interessante...
Erickson
Great read, even when some technicalities are beyond pre-undergraduate knowledge of spacetime. The authors managed to bring out what are at stakes in GR and QT and QFT, making the discussion of the nature of spacetime appealing.
Aubrey
Full of facts and impeccable research and theory. Reading it is a bit daunting. The language is complex and not very engaging, but there is no question that the material is sound.
BOB
I am not sure how some read this book, but as an undergrad physics student, all I could read are the first couple of pages before the 1st equations.
Faith
the 1st 10 pages are difficult to go through without a course in GR... the figures alone are frightfully intimidating...
Sergio ruocchio
bella battaglia di menti....
a differenza degli altri testi della stessa collana , questo non è certo divulgativo.
Ewa
No stars. I can't rate the book from which the only part I was able to understand was its introduction.
Kevin
Couldn't follow it. Much physics and prior theory is required. Didn't make it through even half of the book.
Gourab Bhattacharya
I first come to know about Wheeler DeWitt equations via this book, thank you Roger and Stephen :)
BakuDreamer
Too much advanced mathematics for me, but, it still all comes down to that stupid cat ~
Chris Brimmer
Penrose just isn't as good at popular science as Hawking is alone.
Jay Wilkins
Penrose and Hawking arguing about cosmology, yada yada yada...
Mike
Aug 17, 2007 Mike rated it 2 of 5 stars  ·  review of another edition
Recommends it for: People with moderate physics knowledge
Pretty dry and less interesting than some their other books.
Gary Levin
Yet another Great book by Stephen Hawking!
Deepu P
really amazing !!!!!!!!!!!!!!!!!!!!!!
Marcia Berg Haskell
Reading this, but it is slow going.
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Stephen William Hawking was born on 8 January 1942 in Oxford, England. His parents' house was in north London, but during the second world war Oxford was considered a safer place to have babies. When he was eight, his family moved to St Albans, a town about 20 miles north of London. At eleven Stephen went to St Albans School, and then on to University College, Oxford, his father's old college. Ste ...more
More about Stephen Hawking...
A Brief History of Time The Grand Design The Universe in a Nutshell A Briefer History of Time Black Holes and Baby Universes

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