The first ray of light at sunrise is commonly referred to as the "first light" or the "dawn light." It is also known as the "first light of day" or "daybreak."
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The ray of light that hits a mirror is called the incident ray.
The ray that represents the light reflected by a surface is called the reflected ray.
A ray of light is used to represent a light path.
The name given to a change of direction of a ray of light is called refraction. Refraction occurs when light passes from one medium to another with a different optical density, causing the light ray to bend.
The two rays involved in reflection are the incident ray, which is the ray of light approaching the reflective surface, and the reflected ray, which is the ray of light that bounces off the surface after reflection.