In terms of looking mathematically dense, I guess it depends on how comfortable people are with equations and scientific principles but people shouldn't necessarily let long or complex looking equations put them off. Don't see it as a string of symbols, try and see it as an algebraic expression of a relationship between parameters and it is generally much less intimidating. I don't know about this book but it is not uncommon for technical books to provide simplified equations most should be able to understand. And even if it is a bit heavy, it sounds as if there is enough for people without having to understand the mathematical bits.