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Electromagnetism
> Refraction and Reflection
Refraction and Reflection
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The refraction is described by Snell's law, which is given by:
sinθ
1
/ sinθ
2
= v
1
/v
2
= n
2
/n
1
Where we have:
θ
1
and θ
2
are the angle of incidence and refraction respectively. Note θ
1
= θ
3
v
1
and v
2
are the velocities of the wave from medium 1 to medium 2
n
1
and n
2
are the refractive indices
The ratio of the refractive indices from medium 1 to medium 2 can be determined by:
n
12
= sinθ
1
/ sinθ
2
or
n
12
= v
1
/v
2
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