I will make this very clear: http://www.physicstoday.org/vol-59/iss-12/p51.html" [Broken] In fact, I strongly recommend you print this out, and give it to people who are not aware of physics, what it does, how it works, and how it permeates through their lives. This article emphasized so many of the points that I have been trying to get across to many people (and even to crackpots). 1. It illustrates the interconnectedness of various branches of physics. You just simply cannot study quantum mechanics alone without understanding classical mechanics and E&M. In many physical phenomena, it crosses many boundaries of the field of study, such as the one mentioned in the article: 2. Many people who are physicists, work in areas and are given titles in which the physics and their physics background are obscure. This leads to people not being aware that physics is at work, and physicists are the ones doing the work. There are many gems in this article. If you do not get Physics Today, then READ THIS ARTICLE! Zz.