The two words science and technology are used interchangeably in the everyday world, but the fields are distinguishably different. As a technologist, one should have a profound appreciation of science; however, it is imperative that a technologist not only appreciate and understand general scientific concepts, but also be able to apply them to the everyday world. Essentially, science can be thought of as a body of knowledge with technology being the practical application of that knowledge. To be an effective electrical engineer or technician, for example, it helps to have an understanding of the actual physical theory of materials and electricity, but many times we will take a simplified approach to solve specific problems. To gain an understanding of the reasoning for simplification in problem solving, please refer to Figure 1-1, a drawing of the copper atom.