How do I find index of refraction if I have the incident angle and refraction angle?

7 answers

Use snell's law. You have to have both indexes of refraction.
what do you mean by both indexes of refection? I put a lazer beam through water.
On side is air, one side is water.
take a look at Snell's Law

N1 SinTheta1=N2 SinTheta2 right?
and i`m trying to find n2 right?
Yes, if N2 is index of water.
Thanks so much :)