To understand and appreciate the effect that each of the experimental factors have upon the final DSC trace, it is useful to have a basic understanding of the heat flow and heat transfer processes occurring within the DSC during an experiment. The specific heat flow path will vary from one type of DSC design to another, but some general rules will apply. As this topic has been covered in more detail in Chapter 1, it is considered helpful to revisit some of the very basic concepts to provide a context for explaining the influence of experimental parameters.