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Light had been a mystery for centuries. Some experiments proved beyond the shadow of a doubt that light was waves. Some other experiments proved beyond the shadow of a doubt that light was particles. The truth about light was obviously hidden and it wasn't until that people began to understand that there was something very weird about the world of the small. Something that required a complete revision of understanding. It was decided that the world of the very small was governed by rules that were different from the rules that governed the world we can see, and regular or classical mechanics begat Quantum Mechanics.

And that unanticipated breach in mechanics spawned this very important rule:. Individual quantum particles are subjected to a completely different law than the law to which large objects made from quantum particles are subjected. The Quantum Mechanical era commenced in when Max Planck postulated that everything is made up of little bits he called quanta one quantum; two quanta.

Matter had its quanta but also the forces that kept material objects together. Forces could only come in little steps at the time; there was no more such a thing as infinitely small. Albert Einstein took matters further when he successfully described how light interacts with electrons but it wasn't until the 's that things began to fall together and some fundamental rules about the world of the small where wrought almost by pure thought.

The men who mined these rules were the arch beginners of Quantum Mechanics, the Breakfast Club of the modern era. They were Europeans, struck by the depression, huddled together on tiny attics peeking into a strange new world as once the twelve spies checked out the Promised Land.

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Let all due kudos abound. One of the toughest obstacles the early Quantum Mechanics explorers had to overcome was their own beliefs in determinism. What an excellent textbook. It is impossible to learn QM with only one text book, but this one is great nonetheless. A classic introduction. Very readable. Clearly not the most rigorous. Jan 02, Kelly rated it it was amazing Shelves: re-read.

The gateway book to the world of quantum mechanics, i. Aug 29, Munib Ur rated it it was amazing. This review has been hidden because it contains spoilers. To view it, click here.

## [] An Introduction to Quantum Mechanics for those who dwell in the macroscopic world

One of the best book, I can't describe how Prof D. Griffiths described QM. I really enjoyed it all the time when I learned it. Jan 11, Heather rated it liked it. Exists in a state of both memorable and boring.

### 3.4. Summary

May 09, Saurav Kantha rated it it was ok. If you want to really learn quantum mechanics, never pick this book up. Aug 29, Sean McLaughlin rated it really liked it. Good, but some of the concepts don't carry over as well to more advanced courses later. Mar 23, Rizki Fitriansyah rated it it was amazing.

Is the moon there when nobody looks? Jun 20, Gildardo Rivas Valles rated it it was amazing. Excellent undergraduate level course on quantum mechanics. I've used it to teach an introductory course for the last several years. Feb 11, Mayang Dwinta Trisniarti rated it it was amazing. Apr 20, Eric Winter added it Shelves: physics. Quantum Mechanics has a reputation for being one of the most esoteric topics in all of Physics. This reputation is largely well deserved, and it has it source in two aspects of Quantum Mechanics that make it particularly hard to understand. Conceptually, Quantum Mechanics puts to test some of our most deeply engrained intuitions about the Physical world.

Such notions as the reality of the world apart from our attempts to observe it, causality of events, ability to measure all of relevant quantit Quantum Mechanics has a reputation for being one of the most esoteric topics in all of Physics. Such notions as the reality of the world apart from our attempts to observe it, causality of events, ability to measure all of relevant quantities at the same time, and localization of physical object are all put to the extreme test. On the other hand the mathematical machinery and sophistication that is required for understanding even some of the simplest quantum mechanical systems is rather daunting.

Quantum Mechanics is usually one of the last undergraduate classes that Physics majors take, usually in their junior or senior year, after they have acquired a certain level of mathematical maturity and sophistication. There is a school of thought that posits that the conceptual subtlety of Quantum Mechanics can only be appreciated once the mathematical background is fully mastered.

I happen to subscribe to that school of thought, and in my opinion Griffiths' textbook is the surest and the most straightforward path to acquiring the requisite knowledge and mathematical skills for the fullest understanding of Quantum Mechanics. This should definitely not be the first exposure that one gets of the Quantum Mechanics, but those students who are already familiar with some basic problems and results can benefit greatly from this textbook.

In fact, in my opinion this is the best overall science textbook. The writing is clear and to the point, chapters and sections are self-contained and build on previous material in the book, there are plenty of worked-out examples, and the problems at the ends of the sections and chapters are designed to put the concepts and the material to its proper use. All of the problems are well-formulated, and there is hardly any ambiguous wording anywhere.

Some of the problems are extremely difficult, and can take many, many hours to work out.

Those should be attempted only by students who feel very comfortable with long calculus calculations. Most of us ended up using it more than the official textbook for the class or the professor's notes. I also relied a lot on this textbook for the concise and clear explanation of certain points when I was taking a graduate level Quantum Mechanics. Now that I am actually teaching this course I have used it as the primary textbook for my class and have been extremely satisfied with the decision.

No textbook, of course, is perfect and there are a few things that I would have liked changed about this one as well. It would be useful to have a list of important equations at the end of each chapter, with the explanation of what they are used for. Even though I appreciate its abstract and mathematical approach, many students would benefit from having more of real-world problems and explanations early on.

## 001 Introduction to Quantum Mechanics, Probability Amplitudes and Quantum States

It takes almost all of the semester to get to the first physical system that has any real-world relevance. But other than these problems, I think this is a truly remarkable and great textbook, and it's likely to remain the paragon of good Physics textbooks for at least a few more decades. View 1 comment. Feb 23, Jeffrey Sung rated it really liked it.

Great introductory textbook. But needs to be supplemented by something more advanced for even the upper-division undergraduate level. For example, doesn't even cover the Method of Images. Or at least, didn't as of the 2nd Ed. Jan 18, Adam Lantos rated it it was amazing. The most accessible Quantum Mechanics book out there. Although accessible, it does not simplify things on most occasions.

That being said, it does present some material with less mathematical detail than other treatments, but it does so only on occasions where this will not sacrifice understanding. The writing style of the book makes reading it a breeze as it gives you a great vibe like it's a popular science book. That means that it is well-written! The author offers enough intuition behind the p The most accessible Quantum Mechanics book out there.

The author offers enough intuition behind the physics, but does not discuss various subtleties, such as those that occur when using the Hilbert space formalism Dirac's bra-ket notation rather than working with an explicit form of the wavefunctions using the coordinate basis, to be more precise. But as an introductory textbook, someone shouldn't expect this, although it would be really cool if it alerted the reader about the subtle points of the formalism by using some easy examples, like that of the free particle.

This is one of the best introductions to Quantum Mechanics, but certanly not THE best; in particular, I find Shankar's treatment to be better because it is as pedagogical as this but on a higher level roughly graduate, but still accessible. All in all, the great writing style, the intuitive explanations behind everything and the level of pedagogy of this textbook make it ideal for a first introduction to Quantum Mechanics.

According to the title the book is intended to be an introduction to quantum mechanics , but in fact it introduces the reader to wave mechanics. This is the story with many other introductory books on the subject, and as an introduction to wave mechanics this book is not that bad , although not excellent. But wave mechanics is not the whole story: the wave function formalism is not the most fundamental one and besides it is not general.

There are a lot of quantum systems the state of which can not According to the title the book is intended to be an introduction to quantum mechanics , but in fact it introduces the reader to wave mechanics. There are a lot of quantum systems the state of which can not be described by any kind of function.

The educational tradition is that usually students are introduced to wave mechanics first, and then, if necessary, to more general and fundamental state vector formalism of quantum mechanics. From my experience I even doubt that introducing quantum mechanics in such a way, i. This book was our set book for Quantum mechanics. Although the descriptions were good and the calculations were admittedly useful the main point against it was that a lot of the topic was relegated to the questions. But you were left entirely on your own at this point as there were no solutions to the questions these were supplied in a separate book for academic staff only.

With the result that if you couldn't answer the question you were left with a gaping hole in your knowledge and probably This book was our set book for Quantum mechanics.

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With the result that if you couldn't answer the question you were left with a gaping hole in your knowledge and probably couldn't progress any further unless you had a fully supporting lecturer who had a lot of time for their students. In the end I had to forget this book and look elsewhere. I tried many books with little luck until it was virtually too late, when I found the book by Zettili ISBN - a brilliant book that should have been the set text.