A reference system is a framework used to define the position and orientation of objects in space. It provides a set of coordinates that help identify locations, making it easier to understand spatial relationships. Common examples include the Cartesian coordinate system, which uses x, y, and z axes, and the geographic coordinate system, which uses latitude and longitude. In various fields, such as physics, engineering, and geography, reference systems are essential for accurate measurements and analyses. They allow scientists and professionals to communicate effectively about positions and movements, ensuring consistency and clarity in their work.