What is Refraction law, Refraction law: For a wave-front travelling via a boundary among

What is Refraction law

Refraction law: For a wave-front travelling via a boundary among two media, the first with a refractive index of n₁, and the other with one of n₂, the angle of incidence theta is associated to the angle of refraction phi by:

n₁ sin theta = n₂ sin phi.

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