Talk:Physics Textbook Recommendations/@comment-73.8.56.135-20161117204956/@comment-73.8.56.135-20161118044605

There is an enormous difference between the 2nd and 3rd, because David Morin more than doubled the number of problems, and many of the new problems are significantly harder than the old problems. Morin isn't exactly the best at presenting material, but he has a knack for writing challenging problems. Thankfully, the 3rd edition preserves Purcell's excellent text (updating to SI units). So overall the 3rd edition is the best of both world's -- great problems combined with great explanations.