Question

what do you mean by snell's law???????​

Answer 1

Snell's law (also known as Snell–Descartes lawand the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

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Answer 2

Explanation:

law stating that the ratio of the sines of the angles of incidence and refraction of a wave are constant when it passes between two given media.

The formula that describes refraction is also known as Snell's Law. The angle of refraction depends on the angle of incidence of the light, and the indexes of refraction of the two materials. ... As a reminder, the angles in Snell's Law are always measured relative to the normal (perpendicular) to the surface.

Snell's law, in optics, a relationship between the path taken by a ray of light in crossing the boundary or surface of separation between two contacting substances and the refractive index of each. ... The reason light is refracted in going from one medium to another is shown in the Figure.