Refraction Index

[Spectre32]

How do u figure out the ratio of the refraction index if you have to unknown materials, that of which, one is 1.25 greater than the speed of sound.

[Doc Al]

If you are asking about the optical index of refraction, could you please reword your question. You mention "speed of sound"--what's that got to do with it?

[HallsofIvy]

What is the DEFINITION of "refraction index"?

[Spectre32]

Well to figure out the refraction index the formula is liek n= c/v. Therefore knowing the speed of sound is important. I'm just baffled as to how to get that ratio.

[Doc Al]

Well to figure out the refraction index the formula is liek n= c/v. Therefore knowing the speed of sound is important.
You realize, I hope, that the speeds referred to in that equation for index of refraction are speeds of light, not sound!