👉 Retractible is a technical concept in physics and engineering terms. In simple terms, it refers to a physical system that allows its internal forces (such as gravity or electric fields) to be transmitted through a material without altering the state of matter of the system itself. This means that if you were to change one part of the material inside the system, such as changing the shape or size, it would not affect the rest of the system's behavior. Retractible systems are important in many areas
