Quantum Mechanics Demystified 1st Edition by David McMahon | (PDF) Free Download

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User’s Reviews

Reviews from Amazon users which were colected at the time this book was published on the website:

⭐I really wanted to like this book, as I have other math and science books in the Demystified/Dummies series. But the book is just not a good introduction to QM. It is terribly organized, FILLED with typos (which stand out to even a QM novice like me) and dotted with random concepts with no background or proper explanation. If you want to start learning QM, and all you have is this book to start, I recommend brushing up on basic calculus and linear algebra first, and then reading the chapters in this order (applies to first edition):1 for a quick introduction to the background of QM4-8 for the math needed to do QM, Dirac notation and the postulates. Good explanations of matrix diagonalization and the characteristic polynomial.11 now that you know Dirac notation, learn about spin states2 don’t get bogged down here…just get a feel for wavefunctions3,9,10,12 Come back to these later once you have a better grasp (from other books) of the Schrodinger equations, harmonic oscillators, angular momentum, etc. The one good thing here is that most examples are completely calculated out.

⭐There are books that you hope will help you and books that actually do. If you are serious about teaching yourself quantum mechanics “Quantum Mechanics Demystified” by David McMahon is a must-have. The book is concise clear and he does a good job of explaining the reasons behind what’s going on. I will say you do need the undergrad math preparation in matrices and differential equations however. Hence I suspect, some of the lower star ratings. Dirac notation and density matrices are what I have been interested in learning. How many texts out there do a thorough job of getting you started with density matrices and their interpretation? Not many. Blum might be an example. Shankar? Forget it. McMahon gives just the right amount of hand holding to enable you to crack open these types of abstract ideas. There are numerous helpful examples. As a result, I am finally “getting it” at long last. The text does have a lot of typos, but there are lists of errata online to help you out. McMahon, I praise you for ability to explain this challenging kind of material. My original quantum mechanics prof by comparison seems clueless.

⭐Every time I open a Book by Professor McMahon I feel like a novice warrior ready to master a skill ,the easy and precise way.This book of quantum mechanics , presents a series of concepts ( Classical radiation ,Fourier Transform , Dirac Algebra , Angular Momentum ,Spherical harmonics , Spin States and the H-atom) and immediately , with no hesitation , shows you one or two or three examples ( , solved , step by step..no rush at all). Think of yourself as a timid novice which is taken from the frightening prefaces of other “excellent” books , into a dangerous jungle by the hand of professor McMahon..then he teaches you a lot of skills and you learn how to play the beast . You are ready with 136 solved examples ,fully written ,and then he takes you into the other side of the jungle , ready to fight other scenarios . I myself am following Dr Susskind’s Online Lesson .With the help of these two masters I have developed no fear for nobody . I am ready to tackle Tannoudji , Landau and others.Thank You Professor McMahon , Thank you Master.

⭐I do not recommend this book, because in my opinion it is poorly written and it fails in its stated purpose of “demystifying” Quantum Mechanics. In order to dispel mysteries, concepts should be clearly defined, but this author seems incapable of writing a clear definition. This book appears to have been written in a hurry and not adequately proof-read. Even someone new to Quantum Mechanics, such as myself, can easily find many mistakes. The extravagant claims made on the front and back covers should serve as a warning.Of all scientific subjects, Quantum Mechanics probably has the most mysteries, at least to the uninformed. Not only does this book fail to demystify; it doesn’t even mention the more mysterious phenomena, such as the fact that a particle can be in many places at once, or that one particle can commumicate with another at a distance instantly (faster than light). In fact it doesn’t even mention the paradox of Schrodinger’s cat, which is illustrated on the front cover.Anyone seriously interested in learning this difficult but important subject should read instead the far superior “Quantum Mechanics” in the Schaum’s Outline Series. For the mysteries the relevant Wikipedia articles should be consulted.

⭐This book is so full of mistakes, it’s hard to follow. The examples skip over a lot of the math, occasionally making it difficult to figure out how they got from point A to point B. This is made even worse by the fact that the answer they end up with might be full of typos. They do stupid stuff like using + instead of = or writing the wrong exponent on a variable, but they also skrew up important equations from time to time. I’m wasting a lot of time in my reading of this text trying to figure out when and where the book went wrong. I would definitely NOT recommend this text.

⭐This book is completely useless. It describes itself as basic enough for beginners yet complex enough for advanced students. I would consider myself somewhere in between this, but didn’t find either of these claims to be valid.Equations are introduced with no context what-so-ever. I expected something that would be a gentle enough (re-)introduction to the subject. No, it’s just straight in there with no explanation of anything. On the cover there is a nice cartoon of Schrodinger and his cat – which suggests the tone of book. Unfortunately, this is misleading (I know: books, covers, judging etc) – the cat never appears. Schrodingers equation appears – but I had to go elsewhere to find out its origins.I can’t suggest an alternative – but stay away from this one.

⭐A lot of reviews spend too much time on errors–yes but not a crippler. It’s the advanced algebra and calculus that takes time to go through— the quantum stuff is not too hard at all.

⭐This book is excellent in principle – BUT ….It is riddled with errors.They are the kind of errors which you would expect if the book were assembled from blocks of text cut out from pre-existing works and pasted together. The blocks are not compatible with each other. The intention should have been to clean it up and make it all consistent – but the rush to publish must have taken priority.Interestingly, the author acknowledges the help of those who reviewed the manuscript. With friends like these … … …It is really too ghastly to be useable.It may be, of course, that the book is itself, a weird manifestation of the uncertainty principle, which prevents one from reading it and understanding it at the same time.

⭐Very clear and easy to understand book. It’s got me though all my undergraduate Physics Modules on Quantum Mechanics with simple clear explanations, questions and worked examples. Price tag made this book VERY appealing. Highly recommended to any Physics student at University! I’ve seen books over 5 times its price which I don’t feel as useful.

⭐Purchased this book for my quantum midterm as im in my 2nd year of uni, and I found this book really helpfull as it explains it thoroughly but builds upto to the harder parts when your ready for it.Well worth the money

⭐I admit to reading only the first two chapters and doing the quizzes for those chapters. I did not go further because I found so many errors and misprints that made the text difficult to follow. The general idea of the book is good but the appalling editing of the final product (at least of the first two chapters) is such that I would not recommend this book to anyone. I am a retired professor of mathematics with a PhD and DSc in general relativity from the University of London and , while I have no expertise in quantum mechanics (that is why I bought the book), I know enough to realize that I wasted my money.

⭐Quantum Mechanics Demystified

⭐The idea behind this book, to do all the calculations line for line, is really great. It’s really easy to grasp the ideas in this way. BUT obviously no proof reading was done before this book was published: There is nearly no page without typing errors in the formulas, most pages contain two to four such errors. This makes this book unusable for a student without an already good grasp of the subject (or a sound mathematical background). Without the typos, it would have been 5 stars in my opinion. With them, it depends on your knowledge and could as well be one star only.

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