👉 The term "renormalize" refers to a process or procedure used in physics and engineering, where one quantity is adjusted so that it can be treated as if it were another. This adjustment is often done because of the fundamental nature of quantum mechanics, which suggests that quantities should not change when measured, but rather they should behave differently under certain conditions. In mathematical terms, renormalization involves changing a function or operator such that its properties are unchanged under a given set of transformations. For example,