Light rays are straight lines that represent the path along which light travels. They are often used in physics to illustrate how light moves from one point to another. Light rays can be reflected, refracted, or absorbed when they encounter different surfaces or materials, such as mirrors or glass. In optics, the behavior of light rays is essential for understanding how we see objects. When light rays strike an object, they can bounce off or pass through it, allowing our eyes to perceive the object's color and shape. This interaction is fundamental to technologies like cameras and eyeglasses.