| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| index of refraction bk7 | 0.6 | 0.4 | 4769 | 11 | 23 |
| index | 0.65 | 0.1 | 9036 | 25 | 5 |
| of | 0.53 | 0.8 | 3983 | 42 | 2 |
| refraction | 0.24 | 0.7 | 2883 | 4 | 10 |
| bk7 | 1.64 | 0.9 | 1330 | 18 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| index of refraction bk7 | 0.8 | 0.6 | 194 | 90 |
| nbk7 index of refraction | 1.4 | 0.6 | 1631 | 4 |
| n bk7 refractive index | 1.53 | 0.2 | 2214 | 59 |
| refractive index of bk7 glass | 1.3 | 0.2 | 1291 | 87 |
| refractive index of n-bk7 | 1.97 | 0.1 | 2778 | 25 |
| refractive index of nbk7 | 1.94 | 0.5 | 9619 | 62 |
| list of index of refraction | 0.52 | 0.7 | 5880 | 10 |
| refraction bending and index of refraction | 1.41 | 0.7 | 4719 | 34 |
| index of refraction index | 0.8 | 0.8 | 115 | 87 |
| refraction and index of refraction | 1.58 | 0.4 | 5064 | 9 |
| bottom index of refraction | 0.04 | 0.2 | 1055 | 3 |
| index of refraction n | 0.17 | 0.8 | 9307 | 25 |
| complex index of refraction | 1.01 | 0.7 | 7441 | 73 |
| refractive index n k | 0.03 | 0.8 | 2126 | 89 |
| index of refraction explained | 1.89 | 0.9 | 2798 | 26 |
| refractive index of bbo | 0.03 | 0.4 | 5800 | 60 |
| high index of refraction | 1.78 | 0.6 | 7857 | 68 |
