Index of Refraction | Material | Index | | | Vacuum | 1.00000 | | Air at STP | 1.00029 | | Ice | 1.31 | | Water at 20 C | 1.33 | | Acetone | 1.36 | | Ethyl alcohol | 1.36 | | Sugar solution(30%) | 1.38 | | Fluorite | 1.433 | | Fused quartz | 1.46 | | Glycerine | 1.473 | | Sugar solution (80%) | 1.49 | | Typical crown glass | 1.52 | | Crown glasses | 1.52-1.62 | | Spectacle crown, C-1 | 1.523 | | Sodium chloride | 1.54 | | Polystyrene | 1.55-1.59 | | Carbon disulfide | 1.63 | | Flint glasses | 1.57-1.75 | | Heavy flint glass | 1.65 | | Extra dense flint, EDF-3 | 1.7200 | | Methylene iodide | 1.74 | | Sapphire | 1.77 | | Rare earth flint | 1.7-1.84 | | Lanthanum flint | 1.82-1.98 | | Arsenic trisulfide glass | 2.04 | | Diamond | 2.417 |
| Index
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