This book describes is a deep dive into not only the four official laws of thermodynamics, but an additional principle that deserves its place among them. Labeled in this book law 1.5, it describes how the application of energy affects the entropy of the system and that is being applied to.The laws of thermodynamics are an important part of physics, and this new principle published in 2012 is just as important to understanding entropy. In fact it actually turns out that this principle actually explains how both the second and third law work. This is why it is given the place it is in this book.