Customer Reviews

Introduction to Electrodynamics (3rd Edition)

5 star:		(56)
4 star:		(29)
3 star:		(12)
2 star:		(12)
1 star:		(9)

 

 

(Edit: 3/10/07)

-- I have visited this review three times now. I wrote it as an undergraduate, edited as a graduate student, and now I'm editing it again as a professional with a little more experience. After reading through this review I fear that an instructor, searching Amazon for a text for the upcoming academic year, might think that I am recommending Jackson over Griffiths for an undergraduate course. Heck no. Griffiths is the best book you will find on the subject for an undergraduate junior/senior level textbook. It is a must have text for students new to the field, as it is well written, quite readable, and worth keeping. The text speaks to the student, not the instructor. While you, as the instructor, might know that there is a lot more to the field than is covered in this text, you must set that aside and realize that this book is the best for your students who are still learning. This book is a foundation that will give them the experience and confidence to eventually tackle more difficult texts like Jackson (though I still wonder if anyone could possibly master that text). My original review follows. --

I orignially wrote a review for this book as an undergraduate. In that review, I credited Griffiths with a knack for presenting information in a clever and entertaining way. I still believe this is true. At the time, I also said that Griffiths included precise and complete examples. Looking back, I no longer believe this is true.

When I first started using this book, I was under the impression that Griffiths had discovered a method in the way of writing textbooks that was totally superior to all other authors of similar background. Now, after several years of using Griffiths as a reference, I find that his books serve as a wonderful resource for refreshing one's memory, however they lack a certain comprehensive quality that would make them a solid reference text. I am now a student of John David Jackson's text, that legendary text with the impossible exercises (Classical Electrodynamics), and the astounding thoroughness of his book dwarfs the Griffiths E&M text by comparison. Valuable information in the Griffiths text is often left as an exercise. This is very frustrating when one is searching for solutions to much more advanced problems. I contacted Dr. Griffiths and asked him if it would be possible for me to obtain a solutions manual to both his E&M and his Quantum texts, but he informed me that I could not obtain these manuals unless I was an instructor at the insistence of the publisher (Prentice Hall). This is unfortunate. However, it is remarkable that Griffiths responded to my email. I think this is a testament to his character - he wants to help his readers, and this is evident in his textbooks.

All in all, the text is a fantastic book for the undergraduate, and a helpful resource for the graduate student. The book is a valuable resource for the intermediate or slightly advanced undergraduate physics student, and I encourage instructors at the undergraduate level to use the Griffiths text. For the physics student, the first exposure to E&M should come from Halliday and Resnick, the second should be Griffiths, and there really should be an intermediate step before they see Jackson, but no one has written that book yet.

I have taught from Griffiths' Introduction to Electrodynamics twice now. It is a very good book. The selection of topics is good, and the mathematics is clear. The prose is enjoyable. A few problems follow each section. These problems need the material just covered. The end of the chapter problems can be very challenging. This distribution of problems is very helpful. There are useful references to American Journal of Physics. Time with Griffiths is very well spent.

Here are a few flaws. The first half of the book is much more complete. Perhaps, Griffiths became weary after chapter 7. There are indications. Figures and references are fewer. Surprisingly, the third edition did not correct this imbalance. It is essentially the second edition with some renumbering of sections and problems (making the second edition less valuable as a used book). An even bigger surprise is that in the third edition some examples became problems!

The text is often too brief. If you want the full text of subtle arguments, go to Purcell. Compare, for example, the two discussions of the average field, or the two discussions on multipole expansions.

A more striking difference between Purcell and Griffiths is the special relativity connection. In Purcell it is the heart of the discussion of magnetism. With just the transformation of forces between frames, magnetism appears. In Griffiths it is the last chapter. Griffiths is very formal with superscripts and subscripts unleased in full force.

The book (like Jackson) is often a vehicle to teach mathematical physics. There is very little real life electricity and magnetism in Griffiths, e.g. no bubble jet printers in electrostatics, no magnetic tape in magnetism. We need to look elsewhere for practical matters.

This introductory book on Electrodynamics is one of the coolest and informal books I have ever read in my student life. I have used the book as an undergraduate and I still use it even now in my post-graduate study. The physical insights offered by the author in almost all the chapters are invaluable and interesting.Problems in Electrodynamics can be mathematically very demanding, but the book stands on it's own feet and the mathematical background required to use the book is more or less sufficient. The exercises are well thought-out /collected,but a major source of irritation is the lack of solutions or even answers for that matter. Dr Griffiths should understand that an elementary treatise such as this is used by a good proportion of the student community (who do not always have contact with a good teacher) for self-study. Such students need someone to hold his hands and be led into such an interesting area of classical physics. Moreover, when Landau can offer offer solutions to the problems in his Course of Theoretical Physics, Dr Griffiths shouldn't mind giving hints and solutions to the problems. If the author doesn't want to share the solutions in the textbook, a solutions manual should be sold in the market. However, a solution manual is available,from the publishers, but only for teachers who should be able to solve the problems on their own. Even many teachers have privately admitted the problems are beyond their capacity without suitable hints. So, how can the author expect students to solve most of the problems on their own? I have seen many students not following the book, precisely due to lack of solutions , and due to that I can only give four stars out of five. Also, the author needs to dispense with the idea of introducing new concepts in the exercises. But if one forgets that, I would say, the book is surely raccommended to beginners and a good book to start with before graduating to Jackson.

I am a graduate student of physics.

I used this book as an undergraduate. It was invaluable. I understood what Electricity and Magnetism means.

I used this book to study for the GRE physics test. It was invaluable. I wouldnt have made it without it. Everything was there, self contained, crystal clear.

I used this book as a supplement to Jackson to the graduate school. Jackson was inpenetrable some times and this book paved the way for the more advanced material.

I used this book to prepare for the comprehensive examinations of my physics department. The book was invaluable. It refreshed my memory (by that time I knew the material!) and I went quickly through solved and unsolved problems. I passed the exams.

Isn't that enough ? How more usefull a book can be ? If you are a physics major you ought to yourself to buy this book. Dont complain later when you move to Jackson. If I was a millionaire I would buy this book to all the physics major of the world. Enough said.

Great textbook, amazingly readable, but watch out which edition you have. The so-called "Eastern Economy Edition" (paperback and marketed in Asia)is missing a few things, notably labels on some problem diagrams. If you don't have friends with the real one, be sure to avoid that.

I'll begin with the NEGATIVES because there are fewer:

- No solutions and difficult end-of-chapter problems for some of the chapters make it very difficult to use this outside of a class
-Examples are good but they ill-prepare you for the end-problems

POSITIVE
-Very easy to read
-Good descriptions and explanations of phenomena
-Good simple examples with straightforward solutions (would like more)

Overall, I give it a 4/5. It's the first book I've used to study E&M beyond basic physics and I was mostly happy.

If you have never used a textbook by Griffiths, then stop wasting your time and buy this one. I am a current physics graduate student who did NOT use this textbook during undergraduate study and I am left wondering why...
In Introduction to Electrodynamics, the reader is expected to have a basic understanding of vector operations, and a firm grasp of calculus. Beyond this, the text clearly and accurately explains the fundamentals of electrodynamics, from steady-state electric fields (up to the concept of multipole expansions), to steady-state magnetic field topics, and even more advanced topics. The entire book is increadibly readable and contains many pre-worked examples of pivitol problems.
Any undergraduate student of Physics should not be without this text. If you are a graduate student currently hacking your way through Jackson's Electrodynamics, you ALSO should not be without Griffith's E&M. This book is without a doubt, the best introduction to electromagnetic phenomena around.

There is a reason most junior/senior level introductory E&M class uses this book. It is simply the best one for that level of introduction. It does not presume any knowledge of vector calculus. In fact, it gives a very detailed introduction to the various vector analysis needed in the various parts of E&M. By the end of it, you will learn E&M, the math behind it, and have a great intuition on gradients, divergence and curl. Some may say it's too elementary. The reality is that most students would need to walk before they run, and freshman intro physics classes really don't prepare them for the more advanced studies such as Jacobson.

Several texts I've encountered in advanced-undergraduate levels are set up pretty much the same --- a chapter of information containing a lecture explaining equations and physical principles, examples interspersed throughout the lecture portion, and then about thirty to sixty problems on the material covered in the chapter. So the student eats a big meal --- a lecture and examples on an entire chapter --- and then must digest it all at one time and show what they've learned by regurgitating answers on a piece of paper (to continue with perhaps and ill-chosen metaphor).

However, it has also been my experience as a physics student at the advanced undergraduate level that some of the texts I've found most useful have been set up differently --- instead of a whole chapter to digest at once, Griffiths is set up in sections within chapters which have problems of their own. So the digestion of the material is slower and, in my opinion, healthier (in that the student can think about concepts in smaller packages right after they've read them, and then be able to build on that knowledge-base as they continue through the chapter to concepts related to what they've already learned and tested themselves on). Griffiths also has many additional problems at the back of each chapter which are more challenging than the problems at the end of each section, thus pushing the student to an even higher level of understanding.

The only grief that I have with this tome is the lack of answers to the problems at the end of the sections of the chapters. I am mainly an independent learner, and answers are very useful, especially when one is first learning a new mathematical technique or trying to master a new concept. While true that he includes some answers to the problems at the end of each chapter, by that point it is expected that I am already familiar with the problem-solving techniques, so they aren't as useful as they could be. I'd prefer it if he set it up the other way around --- answers for the problems at the end of each section, and then maybe only a few answers for the problems at the end of each chapter.

All in all this is a good text which will give an undergrad at the junior level a thorough education in electrodynamics. I recommend, however, that the professor use an additional text explaining in finer detail partial differential equations and vector calculus.

Pros:
- Well Written for the most part
- Never loses sight of the physics behind things, provides some good insight (especially on the time dependent fields/potentials, and radiation sections)
- Strikes an interesting balance between formal and informal, could be used for an intro or a second undergraduate course, depending on what parts the teacher focuses on
- Good first time introduction to solving Laplace's equation, covers separation of variables, and eigenvalue expansions well,

Cons:
- Kind of low level at some points, which is good some times, but at other times, it makes it tricky to follow, for example, in deriving the retarded potential, griffiths simply quotes the final answer, and plugs it in to check that it is the solution. It's much more informative (not to mention less messy, and not unduely difficult) to solve for the green's function to the inhomogeneous wave equation.
- My other complaint is that relativity is introduced very late in the game. It would have been nice to do the covariant formulation of E&M before doing radiation & time dependent potentials, and then the connections to SR could have been made more manifest, and the discussion could have been higher level

Overall:
Good book, though not as good as his QM book. Slightly low level (there still needs to be something halfway in between this and Jackson, to bridge the gap). For undergrad's, I'd recommend using this book primarily, and reading through some of the sections of Jackson as you go to fill in the mathematical rigor.