- #1

seanmcgowan

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## Homework Statement

The critical angle of refraction for calcite is 68.4 (degrees) when it forms a boundary with water. Use this information to determine the speed of light in calcite.

## Homework Equations

n=c/v

n= Index of refraction

c= Speed of light in a vacuum

v= Speed of light in medium

## The Attempt at a Solution

I am looking for v so i rearranged the equation to look like this: v=c/n

v= (3x10^8)/68.4= 4385964.91228

Is this right? Did the water have something to do with the equation? If not then could you please help, I have no idea how to work this problem otherwise.