The angle at which a ray of light leaves the other side of a window pane is the same as the angle at which it strikes the glass.
Refraction is the change in direction of a wave when it passes from one medium to another or from a gradual to a sudden change in the medium.
When a wave of light passes from one medium to another, its direction is changed. This phenomenon is called refraction. It occurs because the speed of light is different in different media.
The amount of refraction that occurs depends on the difference in the speed of light in the two media, and the angle at which the light wave is incident on the boundary between the two media. The greater the difference in the speed of light, the greater the amount of refraction. The angle of incidence also affects the amount of refraction; the greater the angle, the greater the refraction.
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