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How to Build a Time Machine
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How to Build a Time Machine

3.8 of 5 stars 3.80  ·  rating details  ·  702 ratings  ·  75 reviews
With his unique knack for making cutting-edge theoretical science effortlessly accessible, world-renowned physicist Paul Davies now tackles an issue that has boggled minds for centuries: Is time travel possible? The answer, insists Davies, is definitely yes-once you iron out a few kinks in the space-time continuum. With tongue placed firmly in cheek, Davies explains the th ...more
Published by Penguin Books, Limited (UK) (first published 2001)
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قرأت هذا الكتاب لسببين
اولا لانه من تأليف عالم الفيزياء الشهير بول دايفيز و انا اثق فى اى كتاب عليه امضاء بول دايفيز من انه سيكون كتاب ممتع و مفيد فى الوقت ذاته
و ثانيا لاننى وجدت انه لا يوجد اى review عربى للكتاب
كلها تعليقات اجنبية و كأنه لا يوجد منا لعرب من هو مهتم بقرأة كتاب فيزيائى
ناهيك طبعا..عن كم الاستظراف و السخرية الذى وجدته من الاصدقاء المصريين وا لعرب... بسبب عنوان الكتاب..السذج فقط هم من يحكمون على كتاب من عنوانه.. السذج فقط هم من يسمعوا عنوان ال
Joanne G.
Contrary to the misleading title, this book does not contain any helpful schematics or step-by-step instructions to build a time machine. Once I recovered from my overwhelming disappointment, I enjoyed the simple (though deep) discussions of the different venues that could result in time travel.

As an avid science-fiction reader, I've nearly taken the idea of time travel for granted. The book cleared up some misconceptions. I hadn't realized that traveling backwards in time would be more problem
A very dear friend of mine bought this for me – and she was concerned that I might have read it already. I’ve read a couple of Davies’ books – but not this one. I can hardly remember what the others were called now – but they weren’t called How to Build a Time Machine of that I’m quite certain.

One of the others was also about time and also gave a rather involved discussion on why zapping off at the speed of light is even better than Oil of Olay if you are after younger looking skin. I’ve never u
Wonderfully brief, Davies turns in an easily-finished primer on the mechanics behind time travel, and the implications of taking such a trip - assuming you're not spaghettified in the process.

This is a deep subject, and while sci-fi is constantly referenced, the author manages to convey some of the major points with a subtlety that aids the physics clod (such as myself) who can find Hawking's books a little intimidating.

Davies has produced something that makes the gee gosh parts of time and sp
Lukasz Pruski
I quite liked Paul Davies' "The Eerie Silence: Renewing Our Search for Alien Intelligence", which I review here . I have not found my second book by this British physicist and famous popularizer of science, "How to Build a Time Machine", as interesting. Also, while the first part of the book, which mainly focuses on "spacetime", is clear and convincing, the part dedicated mostly to wormholes seems to do less than stellar a job.

Dr. Davies first debunks the commonsense picture of time that we use
aqeel fadil
عند قرائتك لعنوان الكتاب سيتبادر الى ذهنك انه يحتوي على خريطه هندسيه لصنع هذه الاله ماعليك سوى اخذها الى الورشه والبدء ببنائها
حقيقه الامر ليست بهذه البساطه فأله الزمن التي يتحدث عنها بول ديفيز هذا العالم الرائع صاحب المؤلفات الجميله من الصعب بنائها وابعض اجزائها من الصعب تكوينها فهي تحتاج الى طاقه يستحيل او من الصعب جداً الحصول عليها الطاقه السالبه
وأما الوقت الذي تحتاجه لكي تعمل يتراح بين دقائق الى مليارات السنين
ولكنه يأمل مع تقدم العلم والحضاره يمكن ايجاد وسائل يمكن من خلالها توفير الطاقه والوس
This book is really interesting. At times can be confusing, but is mostly really enjoyable. I have always dreamed of time travel, and this book was really good for me to read. It helped me understand a lot of parts of my theory. I would suggest this book if you really want to get sucked into an amazing philosophic idea.
Hugh Chatfield
It is kind of interesting to find out that although we don't have the technologies to carry this out - we can think of, and show how to construct such a device. There is nothing in Physics that says this can't be done.

I'd be quite happy to only discover how to send and detect signals going backward in time. Maxwell's equations show two solutions when solved. One is the forward in time e/m that we are all familiar with and make use of. The other is a backward in time e/m wave. Typically this sol
Surprisingly brief - it was all well and good until Davies started blabbering about the quantum multiverse, inflators and negative energy..then I got kind of confused. But it was a very curious read, (I'll recommend this to anyone who wants to get a clean-cut summary on the subject.)
I borrowed this book out as I wanted some more understanding on the science of time travel. I'm working on a story where my characters time-travel, and although it is magical based, I wished for scientific explanations, theories and laws to combine with it. This was a good book to come to.
It doesn't give step-by-step instructions of what to do, but rather goes into theoretical physics and ideas on how one COULD time travel (if one had the resources).
I'm not particularly physics or science savv
when i was younger i read a book about the possibilities of time travel and how to build a time machine. i brought this book with me thinking that it was the same one. not so.

the one i read in my youth was a how to book of many different amazing things, the crown jewel was time travel, but it also explained how ancient civilizations communicated with each other across the globe. it supposed that the pyramids were really more like ancient cell phone towers and the civilizations with pyramids coul

Paul Davies [PD] es uno de los mejores divulgadores de ciencia que he leído. Le conocí gracias a los libros de ciencia de Salvat, con “El Universo desbocado” y “Dios y la nueva física”, grandes títulos de divulgación. Mi libro favorito sigue siendo “Sobre el tiempo”, en el que habla del tiempo (no del meteorológico, sino del cronológico) desde el punto de vista físico. Impresionante libro. Recuerdo que cuando me fui de mochilero a dar la vuelta a Australia hace cuatro años pasé por la Universida

This was a tough book to get through. Its a beginner's primer to Einsteinian and Quantum physics, all in a tiny 125 pages. The purpose of the book is to incite curiosity: to make the reader want to know more, to finish it, and need to know more. Mission accomplished!

As a primer, its not a dense book, and it is well-written for laymen readers, but the concepts themselves, even simply and summarily explained, are very different from our everyday 'familiar and observable' way we experience reality
I daydream a lot and I highly believe in the possibility of time travel.
If I could travel back in time I would like to go back to the 1800s and meet Dostoevsky. I want to ask him about Raskolnikov and the use of voice in the novel.
I would also like to go cak in time to meet James Joyce. I want to ask him about the stream of conciousness and ask him to explain Finnegan's Wake to me.
I want to go back and meet Charles Dickens so that he can teach me to write with exceptional details.
Well, of cours
Sara Poole
Perhaps it was inevitable that my fondness for novels involving time travel would lead me to this slim but fascinating non-fiction work by physicist, Paul Davies. Despite the provocative title, Davies doesn’t actually give step-by-step instructions for building a time machine in your garage, more’s the pity. But he does explain in plain English why we’re already time travelers (moving toward the future at the stately pace of one second per second) and how the universe just might allow us to do f ...more
Not my next classroom science project, but definitely an enjoyable read and a fun opportunity to think about modern physics. The style of the writing and tone of the book made for a smooth read, and there are a lot of diagrams that provide helpful illustrations of what the author is talking about. He also provides cross-references to different parts of the book to remind the reader of other things he has talked about, which is especially helpful given the complexity of the topics. I think this i ...more
Aaron Dietz
A decent summary of how to construct a wormhole but of course it's stuck in the ol' conundrum: it can't REALLY explain how without getting too technical, but it doesn't want to get too technical. I would have preferred technical (give me the equations and everything!), but still a fun look at the subject.
Could have used a little more mathematical rigour, but I understand that this book is geared towards a general audience, with maybe an O level understanding of both maths and physics. I love the cartoons and the survey of books and movies on time travel.
Nuno Vargas
This is an interesting book, which starts out with a practical idea in mind. The text is very clear, and not difficult to follow. Unfortunately by the end of the book I was not much convinced that, even if the theory is sound, we can ever actually build a time machine. But I liked it in general and would have given it 3,5 stars if possible.
Unlike other science books I've read, this one is quite short and very fast to read. That's because it glances over some of the theory involved, just using it
في الحقيقة لم افهم الا القليل من هذه النظريات الفيزيائية الخيالية .
مبدأ اللا يقين هو كل ما بمكن ان تركز عليه بعد كل هذه القراءة يعني ما حدا عرفان شي ):
why is this universe rather than some other
كتاب أكثر من رائع لكن معقد كثير
So close. I was so close to following the book all the way through until he got to virtual photons and negative energy. I got a bit lost then.

A surprisingly short book, of the 135 pages every third page or so is an illustration of dubious helpfulness (and some atrocious portraits). I'd like him to have spent more time on the 'How to build' chapter. You can't just say "Tow the end of the wormhole next to a neutron star" without providing some extra practical information!

Slowly, I'm getting the ha
Kuldeep Yele
this is a nice book....
Mirjam Visscher
This is a little fun book.
It is not a paradox but simply a very weird state of affairs.
Paul Davies concisely describes the concepts of time, time travel, and time machines, giving a fairly simple recipe for creating a working time machine out of a wormhole. Simple, but difficult considering the amounts of energy and type of fuel required, both of which will prevent time machine experimentation for a long time (if not forever). I especially enjoyed the discussion on relativity of simultaneity, which is a truly mind-boggling concept. A short but very informative and easy to digest s ...more
Andrea LeClair
I took this out of the library the other day in a very determined manner: I was going to learn about physics. This may not, however, be the book to help me meet that goal, since in the first paragraph, the author declares that other people have better explained concepts of relativity and he was jumping straight into the time travel part. Still, the book seems both fun and, more importantly, accessible to someone whose only real grasp of physics was gained from sci-fi television shows.
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Time Travel: How to Build a Time Machine 1 26 Oct 16, 2013 04:26AM  
  • The Future of Spacetime
  • Time Travel in Einstein's Universe: The Physical Possibilities of Travel Through Time
  • Time: A Traveler's Guide
  • In Search of the Edge of Time: Black Holes, White Holes, Wormholes
  • Introducing Time (Introducing (Icon))
  • Time Traveler: A Scientist's Personal Mission to Make Time Travel a Reality
  • Faust in Copenhagen: A Struggle for the Soul of Physics
  • Great Physicists: The Life and Times of Leading Physicists from Galileo to Hawking
  • Einstein's Clocks, Poincaré's Maps: Empires of Time
  • Nature's Numbers: The Unreal Reality Of Mathematics
  • The Physics of Superheroes
  • Universe: The Definitive Visual Guide
  • An Introduction to Genetic Algorithms
  • Massive: The Missing Particle That Sparked the Greatest Hunt in Science
  • The Infinity Puzzle: Quantum Field Theory and the Hunt for an Orderly Universe
  • Science: A Four Thousand Year History
  • Relativity Simply Explained
  • Not Even Wrong: The Failure of String Theory and the Search for Unity in Physical Law
Paul Charles William Davies AM is a British-born physicist, writer and broadcaster, currently a professor at Arizona State University as well as the Director of BEYOND: Center for Fundamental Concepts in Science. He has held previous academic appointments at the University of Cambridge, University of London, University of Newcastle upon Tyne, University of Adelaide and Macquarie University. His re ...more
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