In this book we will develop a new approach to fundamental physics. It presents a different explanation for experimental findings that lie at its core. We call it Information Physics. As its name suggests, it is built around the concept of information. The notion of information is applied to fundamental physics in a way that is different from the current information theory,also known as Shannon's theory.Information Physics is a scientific theory because it explains experimental results stretching back hundreds of years. It also gives new predictions that can be tested. It is an alternative to a Relativistic point of view.