1. Direction: The incident ray is the incoming light ray that hits the surface of an object, while the reflection ray is the outgoing light ray that bounces off the surface. The incident ray and the reflection ray lie on opposite sides of the normal, which is a line perpendicular to the surface at the point of incidence.
2. Angle: The angle of incidence is the angle between the incident ray and the normal to the surface, while the angle of reflection is the angle between the reflection ray and the normal. For a smooth, flat surface, the angle of reflection is equal to the angle of incidence. However, for curved or rough surfaces, the angle of reflection may differ from the angle of incidence.
3. Intensity: The intensity of an incident ray is the amount of light energy per unit area carried by the ray, while the intensity of a reflection ray is the amount of light energy per unit area reflected by the surface. The intensity of the reflection ray is typically less than the intensity of the incident ray, as some of the light energy is absorbed or scattered by the surface.
4. Polarization: The polarization of light refers to the orientation of the electric field of the light wave. Incident light can be either unpolarized or polarized, while reflected light can also be either unpolarized or polarized. The polarization of the reflection ray depends on the polarization of the incident ray and the properties of the surface.
