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Paradox: The Nine Greatest Enigmas in Physics Kindle Edition

4.4 out of 5 stars 776 ratings

A fun and fascinating look at great scientific paradoxes.

Throughout history, scientists have come up with theories and ideas that just don't seem to make sense. These we call paradoxes. The paradoxes Al-Khalili offers are drawn chiefly from physics and astronomy and represent those that have stumped some of the finest minds. For example, how can a cat be both dead and alive at the same time?  Why will Achilles never beat a tortoise in a race, no matter how fast he runs? And how can a person be ten years older than his twin?

With elegant explanations that bring the reader inside the mind of those who've developed them, Al-Khalili helps us to see that, in fact, paradoxes can be solved if seen from the right angle. Just as surely as Al-Khalili narrates the enduring fascination of these classic paradoxes, he reveals their underlying logic. In doing so, he brings to life a select group of the most exciting concepts in human knowledge. 
Paradox is mind-expanding fun.

Editorial Reviews

From Booklist

This exploration of enigmas in physics is aimed at popular-science readers, but in places, it does require at least a working knowledge of higher math. Some of the famous paradoxes (or, rather, perceived paradoxes) that quantum physicist and university professor Al-Khalili dissects are relatively easy to grasp, such as the one that explains, despite what our brains might tell us, why you only need a group of 57 people to guarantee that at least two of them will share a birthday. But others, such as Zeno’s famous paradox of Achilles and the Tortoise (which seems to suggest that, no matter how fast Achilles runs, he can never catch up to the slower tortoise), take quite a bit of explaining and occasionally some physics history or mathematics. It’s a very interesting book with some nifty surprises: Olber’s Paradox, for example, which asks why the sky gets dark at night when there are billions of stars up there, provides proof of the Big Bang theory. Not for your average brain-teaser fan, but this volume should have definite appeal to readers with the necessary grounding in the subject. --David Pitt

Review

“Readers who enjoy mental challenges and scientific mysteries will have fun with Al-Khalili’s lighthearted, accessible discussion.” – Publishers Weekly

“A very interesting book with some nifty surprises.” – Booklist Online

Product details

  • ASIN ‏ : ‎ B0080KAZQ6
  • Publisher ‏ : ‎ Crown
  • Accessibility ‏ : ‎ Learn more
  • Publication date ‏ : ‎ October 23, 2012
  • Edition ‏ : ‎ Reprint
  • Language ‏ : ‎ English
  • File size ‏ : ‎ 3.1 MB
  • Screen Reader ‏ : ‎ Supported
  • Enhanced typesetting ‏ : ‎ Enabled
  • X-Ray ‏ : ‎ Enabled
  • Word Wise ‏ : ‎ Enabled
  • Print length ‏ : ‎ 306 pages
  • ISBN-13 ‏ : ‎ 978-0307986801
  • Page Flip ‏ : ‎ Enabled
  • Customer Reviews:
    4.4 out of 5 stars 776 ratings

About the author

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Jim Al-Khalili
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Jim Al-Khalili CBE FRS is a quantum physicist, author and broadcaster and one of the best-known science communicators in Britain. He holds a Distinguished Chair in Physics at the University of Surrey where he teaches and conducts his research. He received a PhD in nuclear theory in 1989 and has since published over 100 research papers. He has written twelve books on popular science, between them translated into over twenty-six languages, as well as his first novel, Sunfall. He is a regular presenter of TV science documentaries and the long-running Radio 4 programme, The Life Scientific. He is a recipient of the Royal Society Faraday medal, the Institute of Physics Kelvin Medal and the Stephen Hawking Medal. His latest book, The World According to Physics, was published in 2020 by Princeton University Press. His new book, The Joy of Science, in out in Spring 2022.

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4.4 out of 5 stars
776 global ratings

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Customers find the book engaging and well-written, with clear explanations of complex concepts. They appreciate its visual style, with one customer noting the well-placed illustrations.

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38 customers mention "Readability"34 positive4 negative

Customers find the book engaging and well-written, providing a great summary of complex physics concepts in an understandable manner.

"...In doing so, it also provided a good overview of many of the conundrums that relativity theory and quantum mechanics have created...." Read more

"I just finished this book after almost a year, lol. It's a great read; I've reread the chapters many times over the past year because it's just so..." Read more

"...You may find it a very interesting and well written if you are not familiar with any of these." Read more

"This is a great understandable description of complex and counter intuitive behaviors in the natural world...." Read more

3 customers mention "Visual style"3 positive0 negative

Customers appreciate the visual style of the book, with one noting the well-placed illustrations.

"...It is engaging and presented with a degree of humbleness and awe while respecting the scientific process...." Read more

"...Another point on the book's construction: there were illustrations that were well placed, but there were also a few places where the text very..." Read more

"...Khalili writes about the most amazing concepts in a clear and interesting fashion and never once 'talks down' to his readers." Read more

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Top reviews from the United States

  • Reviewed in the United States on October 1, 2015
    Format: PaperbackVerified Purchase
    I enjoyed this book and found that it helped to clarify the paradoxes discussed in this book (see below). In doing so, it also provided a good overview of many of the conundrums that relativity theory and quantum mechanics have created. I give this book 5-stars and recommend it to people, like myself (a retired research metallurgist with a long ago exposure to modern phyaics in graduate school and further reading since I have retired), which have some understanding of the ideas presented in this book, but with the reservation that those with little or no background in the subjects covered are likely to view the book less positively.

    What is in this book-
    This book discusses the most important paradoxes created by modern physics, plus two introductory chapters that discusses some logic paradoxes. The chapters and their content are as follows:

    Chapter 1 – The Game Show Paradox – Monty Hall and how his knowledge of what is behind the three curtains alters the odds when he lets a contestant switch from their initial choice to another one.

    Chapter 2 – Achilles and the Tortoise – Classical paradoxes and how they are resolved.

    Chapter 3 – Olbers’ Paradox – Why is the sky not covered with stars, making the nighttime as bright as the daytime? The physics here is about the finite nature of the visible universe and the ideas concerning the beginning and expansion of the universe.

    Chapter 4 – Maxell’s Demon – The physics of the second law of thermodynamics is discussed in this chapter.

    Chapter 5 – The Pole in the Barn Paradox - Special relativity and length contraction are discussed in this chapter.

    Chapter 6 – The Paradox of Twins – This chapter focuses on special relativity and time dilation.

    Chapter 7 – The Grandfather Paradox – This chapter focuses on relativity theory and the possibility of travel back in time that the theory allows for.

    Chapter 8 – The Paradox of Laplace’s Demon – This chapter deals with the ideas of a mechanically deterministic universe and free will.

    Chapter 9 – The Paradox of Schrodinger’s Cat - The basic paradox of Quantum Mechanics and the question of entanglement is discussed in this chapter.

    Chapter 10 – Fermi’s Paradox - Fermi asked - if there are aliens from other planets why haven’t they visited (at least as far as most people are concerned) or have given any indication of their existence? The physics is about the possibilities of life on other planets.

    Chapter 11 - Remaining questions – These are not paradoxes, but questions which the author thinks will be answered in his lifetime, answered but not in the foreseeable future and questions that may never be answered. This chapter is only 6-pages long and only lists the questions, but does not discuss them.
    6 people found this helpful
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  • Reviewed in the United States on January 3, 2015
    Format: KindleVerified Purchase
    First I will say that I am a relatively harsh critic. I would only give 5 stars to a book which I consider to be a “Break Through” type book which this is not. The book does not provide any new theories or insight, but rather is a review of many interesting paradoxes (& some are not really paradoxes) that have existed in physics. However, that being said, this book is very interesting and well written.
    The author starts off discussing several simple paradoxes that do not deal with physics. One example is the “Monty Hall Paradox” which comes from the TV show “Let’s make a Deal.” The author stated that considerable effort went into resolving this paradox, which I found puzzling since it seemed to be relatively simple.

    After this first chapter, the book moved into far more interesting topics. These included: paradoxes created when traveling close to the speed of light, Time travel, Parallel Universes and the existence of ET.

    Having an advanced technical degree, I would have preferred the author doing a deeper dive into the math; however, this author seemed to purposely avoid this. Rather, he went into a great deal of effort to explain his reasoning to an audience lacking any technical background.

    Over all I would recommend this book to anyone (at any level) who is interested in physics.
    6 people found this helpful
    Report
  • Reviewed in the United States on January 2, 2024
    Format: KindleVerified Purchase
    I just finished this book after almost a year, lol. It's a great read; I've reread the chapters many times over the past year because it's just so interesting. This is a perfect book for anyone interested in theoretical science or physics.
  • Reviewed in the United States on April 15, 2019
    Format: PaperbackVerified Purchase
    I think he does a good job of explaining all thees 9 paradoxes. But if you are familiar with most of them there is not much new in them except Jim's particular spin on them. You may find it a very interesting and well written if you are not familiar with any of these.
  • Reviewed in the United States on March 21, 2023
    Format: KindleVerified Purchase
    This is a great understandable description of complex and counter intuitive behaviors in the natural world. It is engaging and presented with a degree of humbleness and awe while respecting the scientific process. The literary technique of framing these as paradoxes helps the reader be challenged in trying to grasp the nuances of these behaviors and conundrums as if solving a puzzle.

Top reviews from other countries

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  • Lynne Marie Webb
    5.0 out of 5 stars Lynne Webb
    Reviewed in Spain on February 12, 2018
    Love this book. It is an informative and entertaining read. I will definitely be buying more from this author! Science rocks!
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  • Amazon Customer
    5.0 out of 5 stars The greatest q&a book i've ever read
    Reviewed in India on August 23, 2018
    Great explanations. Great handpicked paradoxes and brain teasers. Recommended for all
  • Erica Steer
    1.0 out of 5 stars Loved it!
    Reviewed in Australia on July 7, 2014
    I heard the author speaking about his book and had to have it.
    Absolutely fascinating, and almost comprehensible for a non-mathematical reader!
  • Amazon Customer
    5.0 out of 5 stars Explain without dumbing down
    Reviewed in the United Kingdom on May 10, 2023
    Jim takes the complexities of physics's big questions and breaks them into comprehensible text. It takes work to read but it is a great attempt to open the subject to those who want to understand.
  • P aus M
    5.0 out of 5 stars "So, where is everybody?" (S. 256)
    Reviewed in Germany on September 18, 2020
    Großartige Zusammenstellung zu den 'neun größten Enigmas (Paradoxien) in der Physik! Klar, kennen die meisten Schrödingers Katze, aber was bedeutet es lebend und tot zur gleichen Zeit und 'warum?'. Das ist gut dargelegt und recht verständlich geschrieben. So spannend es ist, den Geheimnissen der Physik zu ergründen, ich denke einige der vorgestellten neun Phänomene sind schlicht Gedankenexperimente und keine Paradoxien - dennoch sehr empfehlenswert.

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