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The Meaning of Quantum Theory: A Guide for Students of Chemistry and Physics Hardcover – 16 Apr 1992


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Product details

  • Hardcover: 244 pages
  • Publisher: Oxford University Press (16 April 1992)
  • Language: English
  • ISBN-10: 0198555768
  • ISBN-13: 978-0198555766
  • Product Dimensions: 16.2 x 1.9 x 24.1 cm
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (2 customer reviews)
  • Amazon Bestsellers Rank: 4,794,351 in Books (See Top 100 in Books)
  • See Complete Table of Contents

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Review

I can recommend it warmly. Baggott has a practised, informal, attractive style that renders the potentially turgid digestible . . . , he gives a lucid, thoughtful, and helpful account of one of this century's great conundrums. (The Times Higher Education Supplement) --This text refers to an out of print or unavailable edition of this title.

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5 of 5 people found the following review helpful By Andreas P. Rauch on 30 Jun. 2007
Format: Paperback
Quantum systems behave in strange ways: If a water tap was a quantum system, the water might have only two possible temperatures, hot and cold, and nothing in between. Adding up water from a hot and a cold tap wouldn't end up with lukewarm water, but with water in a superposition: As soon as you put your finger in it, the water instantly becomes either hot, or cold, but nothing in between. Opening one tap further would not influence the resulting temperatur, but the chances of the water being hot or cold when you measure it.

Sounds confusing? It certainly is. Quantum theory is a very precise, widely-applicated theory that is in extremly good agreement with experiments. But some central concepts of this theory, which forms the heart of modern physics, are yet strangely vague. We do not yet know what exactly constitutes a measurement. We do not exactly understand what a "superposition of states" actually means, especially since it cannot be directly observed almost by defintion: With every observation, the system jumps into one state, randomly, as it appears.

While the mathematics underlying quantum physics are not that difficult to grasp once you've had your first year calculus and linear algebra classes, the world it describes is completely different from the one we seem to experience every day. We, therefore, cannot "understand" quantum physics by finding every day analogies. We need new concepts - and most textbooks on quatum physics downplay just how strange and problematic these concepts are.

Jim Baggott's book first gives a concise introduction to quantum physics that fills about half the book. It is scientifically sound, keeps the maths to a minimum and is therefore quite accessible to laypeople and undergraduate students of physics alike.
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By simon on 26 Sept. 2010
Format: Paperback
I got this book on a whim and thought that it may just be a fun little book to read. It has turned out to be one of the best books I've read on the subject. I approached this book from a background in chemistry and an inherent distrust of anything that had a complex number. This book goes a long way to explaining many aspects of quantum theory by relating its formulation (not necessarily its weirdness) to familiar situations.

I recommend this book to anyone who is getting into quantum mechanics.
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Most Helpful Customer Reviews on Amazon.com (beta)

Amazon.com: 18 reviews
20 of 20 people found the following review helpful
Insight into Quantum Theory - Great for Physics Students 9 Jun. 2003
By Michael Wischmeyer - Published on Amazon.com
Format: Paperback
I have a fascination for books on the meaning of quantum theory. Many target the layman and dispense with mathematics. Others assume the reader is adept at applying both wave mechanics and matrix mechanics to quantum problems. Published by Oxford University Press, "The Meaning of Quantum Theory", strikes a good balance that is ideal for undergraduate students of physics and chemistry, and is especially useful as a companion for a formal text on quantum theory.
The author, Jim Baggott, combines his experience as a freelance science writer with his skill as a respected lecturer in physical chemistry. In 1989 he was awarded the Marlow Medal from the Faraday Division of the Royal Society of Chemistry for his research contributions in chemical kinetics and spectroscopy. Baggott is an exceptional writer and I enjoy reading sections at random. I have twice read his book and probably will do so again.
About quantum theory Baggott says, "For the first time, students are taught about a theory which they have to accept and which they have to learn how to apply, but which they cannot be expected to be told its meaning." Baggott argues that beneath the mathematical formalism of quantum mechanics, there exists an interpretation, and a philosophy, that warrants investigation.
The first chapter (40 pages) offers a historical overview of the early development of quantum theory that is probably familiar to many readers.
Chapter 2 (35 pages), titled "Putting it into Practice", differentiates Baggott's work from many others. We learn about operator algebra, and then we encounter experimental evidence that we must either use non-commuting matrices, or non-commuting operators, to describe position-momentum relationships in quantum physics.
Baggott then carefully introduces the underlying postulates of quantum physics (and the mathematical formulation) as described by John von Neumann. We learn about complementary observables, the Dirac bracket notation, state vectors and eigenfunctions, and the usefulness of projection amplitudes. A substantial section is devoted to the Pauli exclusion principal, the polarization properties of photons, measurement operators, and the collapse of the wave function, all topics that are discussed later in the context of experimental results.
After 75 pages of preparation, Baggott asks "What Does it Mean"?, the title of chapter 3. Chapter 4 is "Putting it to the Test", and Chapter 5 is "What are the Alternatives?". A reader that skimmed the mathematical discourse in chapter 2 would still find the last three chapters intriguing, although some sections might be heavy going.
"The Ghost in the Atom: A Discussion of the Mysteries of Quantum Physics" by Davies and Brown is non-mathematical, but offers, nevertheless, an insightful look at alternative interpretations of quantum theory - standard interpretation (Copenhagen interpretation), conscious observer, parallel universes, hidden variables, and a statistical view - that dovetails rather well with Baggott's more detailed and more in-depth analysis. As a precursor to Baggott's book, I also highly recommend Richard Feynman's brilliant lectures published under the title "QED".
9 of 9 people found the following review helpful
Quantum Theory in Plain Language 24 Aug. 2000
By Matthew M. Yau - Published on Amazon.com
Format: Paperback
A book devoted to the development of quantum theory, Jim Baggott gives readers a much-desired rest from the mathematical rigidity of the subject. This book is fun, pleasant, and easy to read. It introduces the fundamental and key ideas of quantum theory through clever, to-the-point analogies and diagrams. Many physical chemistry students, or just science audience, will welcome this plain approach of the subject. Landmark concepts such as operators, postulates, Pauli principle, Bohr-Einstein debate and Bell's theorem are covered with a lucid and thoughtful account.
8 of 8 people found the following review helpful
Very readable and enlightening 12 Feb. 2003
By Mike - Published on Amazon.com
Format: Paperback Verified Purchase
This book concentrates more on the philosophical aspects of quantum theory rather than formalism and problem solving, though some simple and easy to follow derivations are presented that give real insights into the guts of the theory, which will help a reader who goes on to pursue quantum theory in greater detail. The historical debate between the positivists and realists during the theories development is presented in a very readable and entertaining way. A very well written and researched book that you will be glad you read.
6 of 6 people found the following review helpful
Schrodingers Cat in Graduate School 11 Dec. 2007
By Metallurgist - Published on Amazon.com
Format: Paperback
This book covers pretty much the same ground as Gribbins "In Search of Schrodingers Cat", but does so in a more mathematical manner. The math is not overly complex, it does not go beyond algebra, but does use very complicated notation systems (including Dirac's bracket notation). The reader should be familiar with the concept of an operator and not be frightened by the sight of partial differential equations, although none are actually solved. The book is aimed at students of Chemistry and Physics, but it is not a textbook per se, but rather an adjunct to a quantum theory text. This book is about the meaning of quantum theory, rather than about solving specific quantum problems. It focuses on the implications of the various interpretations of quantum theory. It not only goes into the standard Copenhagen interpretation (developed by Niels Bohr and colleagues) and the objections to it raised by Einstein and others, but also goes into several other interpretations, such as Einstein's hidden variable idea, DeBroglie's pilot waves and Bohm's quantum potentials. Baggott not only develops these other ideas, but also shows where many have been abandoned by their developers or proved to be inconsistent with quantum theory and experimental data.

By using some math the book Baggott is able to derive the Schridinger wave equation is a very simple manner. This derivation comes from Schrodingers own notebooks and is much simpler than the more sophisticated one that Schrodinger used in his paper describing the wave equation. Baggott also shows where the uncertainty principle comes from and why it is inherent in the mathematics of wave and matrix mechanics because it is a feature of all non-commuting operators. In my opinion the derivation of the wave equation and this analysis of the uncertainty principle are alone worth the price of the book.
Baggott also goes into the EPR thought experiment, derives Bell's inequality and describes in some detail the various tests for the EPR experiment and Bell's inequality. Much of this material is also included in "In Search of Schrodingers Cat", but because no math is included, Gribbin's discussion is not as detailed or complete as Baggott's. (This is not a criticism of Gribbin's book, as it is aimed at a more general audience.)

Baggott's book a great choice for someone studying quantum mechanics, but is probably beyond those with an insufficient background in mathematics. I recommend Gribbins "In Search of Schrodingers Cat" (see my review of this book for more details on it) for those who want a non-mathematical treatment of this subject.
4 of 4 people found the following review helpful
Accessible Overview of Quantum Theory 16 Nov. 2000
By Thomas Hopper - Published on Amazon.com
Format: Paperback
For those interested in modern physics, you could do far worse than read The Meaning of Quantum Theory. This is by far the most intelligable and complete look at Quatum Theory that I have come across. Bagott has written this book for the technically litterate, but has avoided using mathematics for anything other than illustration of some of the finer points of the theory. Whether you have a degree in the physical sciences or not, you will probably find that this book make Quantum Theory as clear as it can be. Having read it at the same time I was taking an undergraduate quantum mechanics course, I found this book helped me make sense of the mathematics. Students who have been, are being, or expect to be exposed to the theory should buy this book and read it; everything will make much more sense.
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