Ray diagram

A ray diagram is a visual tool used to represent how light travels and interacts with objects, like lenses or mirrors. In these diagrams, straight lines, called rays, illustrate the path of light as it reflects or refracts. By following these rays, we can predict how images are formed, such as where they will appear and their size. Ray diagrams help us understand concepts in optics, making it easier to study how different shapes and materials affect light, which is essential in designing cameras, glasses, and other optical devices.