# Find the angles of refraction for these two colors.

1. Jan 8, 2008

### Aamun

1. The problem statement, all variables and given/known data

The index of Refraction for a diamond for red light, 656 nm, is 2.410, while that for blue light, 434 nm, is 2.450. Suppose white light is incident on the diamond at 30.0 Degrees. Find the angles of refraction for these two colors.

2. Relevant equations

sinr/sini = n2/n1 = wvlngth1/wvlngth2

3. The attempt at a solution

My problem is where to start on this question. I was thinking maybe use the index of refraction for air over the red, and then figure out each angle, would that be correct? Or am I missing something?

Last edited: Jan 8, 2008
2. Jan 8, 2008

### olgranpappy

it's two separate questions.

use ur equation sinr/sini = n1/n2.

sini is the same in both questions. only n2 changes. you solve for sinr.

3. Jan 8, 2008

### Aamun

I know about the two separate equations.. but is n1=air?

4. Jan 8, 2008

### olgranpappy

yeah. to be sure you get the right answer you should probably look it up in your book and use the value they give to 4 sig figs or more because the n2 values given are to four

5. Jan 8, 2008

### Aamun

Ok, got it! Thanks for the help =)

6. Jan 8, 2008

ur welcome.