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- Light is reflected at the same angle that it hits the surface. The angle between the incoming light and a line perpendicular to the surface we call the angle of incidence. The angle between the reflected light and a line perpendicular to the surface we call the angle of reflection. The perpendicular line we call the normal.
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Light reflects from a smooth surface at the same angle as it hits the surface. For a smooth surface, reflected light rays travel in the same direction. This is called specular reflection. For a rough surface, reflected light rays scatter in all directions. This is called diffuse reflection.
Nov 14, 2024 · Light rays change direction when they reflect off a surface, move from one transparent medium into another, or travel through a medium whose composition is continuously changing. The law of reflection states that, on reflection from a smooth surface, the angle of the reflected ray is equal to the angle of the incident ray.
If a ray of light could be observed approaching and reflecting off of a flat mirror, then the behavior of the light as it reflects would follow a predictable law known as the law of reflection. The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.
Dec 28, 2020 · When a light wave hits a surface, all or part of it will turn around sharply and reflect away from the surface again. For a smooth surface like a plane mirror, almost all of the light that hits it is reflected, and the resulting image is a clean, "specular" reflection.
When a light ray encounters a surface, one or more of the following three things occur, the light ray: Reflects off the surface and travels off in a different direction. Passes from one medium into the other and continue on a new, straight line path. Is absorbed. Often, more than one of these occur.
In reflection, a light ray strikes a smooth surface, such as a mirror, and bounces off. A reflected ray always comes off the surface of a material at an angle equal to the angle at which the incoming ray hit the surface.
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Figure \(\PageIndex{2}\): Light is diffused when it reflects from a rough surface. Here, many parallel rays are incident, but they are reflected at many different angles, because the surface is rough.
