Most Helpful Customer Reviews
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14 of 14 people found the following review helpful:
4.0 out of 5 stars
Quarks, strangeness & charm!, 2 Jan 2007
I will admit that the title of this book grabbed me straight away. Having been self-studying quantum physics and evangelistically telling friends and anyone who would listen about the wonderful world of the sub-atomic, i thought a general reader on the subject would be good for 'summing up' etc.
In this regard Al-Khalili does not disappoint. The historical progress of thought from the world of classical (Newtonian) physics through the golden age where physics and philosophy walked uneasily hand-in-hand during the 1920's and 30's and the rise to prominence of the 'greats' of theoretical physics - Heisenberg, Schroedinger, Einstein, Bohr, Pauli, et al - is very well and clearly documented and engagingly presented.
The vibrancy of the crashing principles and ideas of quantum mechanics and the birth of subatomic theory is fascinating in itself, but it is Al-Khalili's sheer enthusiasm for the truly strange nature of the universe at the quantum level that is most infectious. This can often lead to hints of "no, look how weird this is!" but for the most part, the ideas are clearly presented and logically presented without resorting to jingoism and tenuous metaphor.
The only place the book really falls down is in its layout in this edition. Often very key principles are interrupted by small fly out boxes or spin-off articles within a chapter which can lead your train of thought to go "ooh, hang on, i better read that, it looks interesting" which can really wreck your train of thought on the main chapter text.
These articles are always interesting and are often practical examples of current research into matters being discussed within the chapter, often by prominent current researchers - it's just the layout that suffers a little.
If you are looking for a good introduction to quantum superposition, wavefunction, subatomic structure, the nature of energy and particles, quantum tunnelling, uncertainty principle, non-locality, relativity etc then this book is a very good place to start.
Strangely, my friend is reading Brian Greene's book "The Fabric of the Cosmos" at the mo and so the interruptions are often longer than just having to avoid interim articles as discussion flips between singularity and unification at the quantum level, so i shouldn't be so hard on Dr Al-Khalili really!
A good investment, particularly for the new quantum agers who are currently entralled by Doctor Who!
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13 of 13 people found the following review helpful:
5.0 out of 5 stars
Leaves one with that all-pervading sense of awe that the very existence of "anything at all" should rightly provoke in us., 1 Aug 2007
This is an extremely interesting book and, considering the subject matter, very accessible. The author present the ideas and theories of the Quantum world without, as I think some other writers do, ascribing an almost "black magic" side to the subject. This temptation to sensationalise I find in some writers on Quantum Mechanics (QM) who tend to present themselves practically as high-priests, allowing us, the uninitiated, a glimpse of the wonders that lie beyond our comprehension, but not necessarily beyond theirs. So, well done! to the author, Jim Al-Khalili, for avoiding that irritating style.
Also, I was very interested to learn that Schrödinger's famous thought-experiment about the dead / alive cat, dealing with one of the weirder aspects of Quantum Theory - the collapse of the wave function into actuality only on observation or measurement - was proposed by Schrödinger as a rebuttal of that theory, on the basis that he considered the notion of the cat being simultaneously alive and dead as being absurd. As do I. All other books that I have read to date on QM discuss Schrödinger's cat as one of the many bizarre realities of QM rather than as being a warning sign that the theory is incomplete.
The world, the universe, matter, time and space are all exceedingly strange things. We can only perceive them, or anything else, through our senses. Undoubtedly much lies "out there" that our senses do not perceive. We have, and can have, only a glimpse of reality. It is therefore virtually impossible for us, even in principle, to fully understand how it all works. But work it undoubtedly does. Science is a search for the explanation and continually seeks the Holy Grail of physics, the Grand Unified Theory or the Theory of Everything, a quest which may never succeed. Gödel's theorem tells us that in principle an "entity" cannot be fully explained from within itself, only from without; so to explain the universe we will need to view things from outside the universe - a tough proposition!
But we can have fun as best we can. Newtonian physics, Special Relativity, General Relativity, Quantum Mechanics and String Theory are progressions, additions and/or refinements to previously held "certainties". We must remember well that previous certainties have always eventually been found wanting in small or large part. And Quantum Mechanics is simply a theory that fits extremely well many experimental observations and predictions. That's all. And for me, the very fact that it is so mathematically precise denies it the "black magic" aspect that many who write about it seem to relish promoting above all else. The weirdness of the experimental observations of the workings of QM is, in my view, due to our current lack of understanding of the physical process at work.
Quantum Mechanics is a truly fascinating subject and is treated wonderfully well in this fine book, on a par to my mind with the also excellent "Quantum Reality", by Nick Herbert.
I highly recommended Mr Al-Khalili's work which informs us beautifully while avoiding sensationalism. And when we finish his book we are left with that all-pervading sense of awe that the very existence of "anything at all" should rightly provoke in us.
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25 of 26 people found the following review helpful:
5.0 out of 5 stars
It all makes sense now!?, 17 Jul 2003
By A Customer
The best book on this subject I have read. The author makes the concepts easy to understand with excellent explanations and examples. This book is not bogged down with obscure formula, which is all too common to book of this subject. The authors writing style is relaxed and often very witty. I for one will be reading more books by enthusiastic and knowledgeable author
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