The basic nature of the text remains the same but numerous modifications have been made to enhance its teachability. Photometry units and definitions are now consistent with the latest publications. A discussion of ideal fluid flow with Bernoulli's equation and the conservation of mass has been added. An expanded mathematics section of the appendix includes logarithms and their equations as well as approximations and trigonometric identities. Problems are greater in both number and variety.
Good solid foundation. It has good graphics and good explanations.
I wish it had online support, more graphics, and more examples that are both conceptually and mathematically challenging. It's a little outdated, which happens to all books eventually.