👉 Portliness is a concept in physics that describes how well a system or object can be described by a set of mathematical equations. It is often used to analyze the behavior of complex systems, such as those involving electrical circuits and mechanical devices. In the context of portliness, a system or object is considered portly if it can be expressed mathematically in terms that are easy to understand and interpret. This means that the system or object can be described using simple mathematical operations, equations, and formulas