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Table 2.
Parameters of lubricants.
| Lubricant | Refractive index | Dynamic viscosity (22 °C, mPas) |
|---|---|---|
| Oil | 1.46 | 840 |
| 99 % Glycerol | 1.47 | 704 |
| 65 % Glycerol | 1.45 | 14 |