How does the change in the direction of a ray when passing from one medium to another depend on the speed

bystudin | October 28, 2020 | Education

How does the change in the direction of a ray when passing from one medium to another depend on the speed of propagation of light in them?

If the beam passes from a medium in which the speed of light is greater into a medium in which the speed of light is lower, the angle of refraction is less than the angle of incidence (b <a). The greater the difference in speed, the smaller the angle of refraction. If the beam passes from a medium in which the speed of light is lower to a medium in which the speed of light is higher, the angle of refraction is greater than the angle of incidence (b> a).

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