A Brief History of Time: From the Big Bang to Black Holes Reviews
October 1, 2010 by Actaphysica
Filed under Physics Book Reviews
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Many Different Angles,
Most people know that Hawking is a brilliant physicist, but after reading this book, one develops a respect for his other talents as well. Most noticeable is Stephen Hawking’s ability to make very complicated ideas seem quite clear through good explanations, clear comparisons to real life events, and a soft humor. The organization of chapers mostly follows a chronological order, which gives a sense of history from Aristotle to present day, yet also establishes concepts in an order that builds on itself. One also realizes that A Brief History of Time was written by a writer, not a scientist who happened to put ideas to paper. This makes a big difference in the enjoyment of a book, since good information in a dry, dull form can be difficult to read (remember trying to keep your eyes open while reading a dull textbook in a subject of interest?). On the other hand, interesting information presented in an interesting manner make A Brief History of Time as much of a ‘page-turner’ as physics can be.
In summary, a fountain of information from galaxies and black holes to quantum mechanics presented in such a way that is not only as easy to understand as it can be, but is an enjoyable experience to read.
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No master of the written word,
Hawking is no master of the written word. Early on, he warns us not to consult his earlier books for more detail – because they are “quite unreadable”. He also admits that, during the production of this book, his editor bombarded him with comments and questions. The impact of this editorial input is plain. The book wallows from unnecessarily long complex sentences written in the passive sense to snappy anecdotes from Hawking’s life.
I found the early chapters very useful as overviews of the theory of relativity and quantum mechanics. The middle chapters – on black holes and the origin of the Universe – were clearly written with enthusiasm.
However, that enthusiasm seemed to fade towards the end of the book. The chapter on the arrows of time seems to have been lifted from an old speech. Here’s what I’m about to tell you: this is what I’m saying: this is what I’ve just told you.
Also, the explanation of the cosmological arrow of time left a lot of questions hanging. Question: What will happen when the Universe starts to contract – will people start to experience time running backwards? Answer: Intelligent life could not exist because, by then, all the stars will have burned out. Well, OK – but does that answer whether time is in reverse or not?
Chapter 10 introduces string theory. Clearly this is an incredibly complicated subject and not capable of being explained in a book entitled “Brief History”. However, the way the subject is introduced and then dropped is tantalising. Apparently, string theories are only consistent if space-time has either ten or twenty-six dimensions. All these extra dimensions are curled up into space of a very small size. I, for one, would have liked more explanation of what that means.
In summary, a useful but frustrating book that varies in tone as the pages turn. I feel a better populist book would have resulted if Hawking had used a ghost writer to interpret his ideas, rather than simply submitting his own words to the scrutiny of an editor.
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Important but accessible classic,
This is probably the most readable book on those mind-boggling questions of cosmology and theoretical physics that engage many of the top minds today. Hawking explains it all in easily understandable language, almost conversationally, and even then, sometimes the concepts are tough sledding. But overall, this is a readable and enjoyable trip along some of the high roads of contemporary physical thought by one of its greatest thinkers. It had been some years since I’d had the time to read much about astronomy and cosmology, and this little book was a great place to start reading up on the subject again.
I usually try to do reviews that aren’t simply a rehash of the material in the book, but I would like to mention one thing Hawking discusses since it was so ironic. I was taught, of course, about the Big Bang theory in college (and no, it’s not about a hot party at Jimi Hendrix’s place back in the 60′s), and by that time it was pretty much accepted as an established fact. But Hawking points out that originally he had trouble convincing his fellow physicists that a singularity such as the big bang had actually occurred. His fellow physicists eventually came around to his view of things, but it took a while. However, Hawking discovered later that if certain quantum phenomena were brought into the picture, the necessity for a singularity disappeared–so he could have saved himself the trouble of the original controversy!
Overall, a great classic by a great scientist and teacher.
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