Snell's Law Calculator
( Refractive Index Calculator)
Snell's Law formula:
n1sinθ1 = n2sinθ2
where:
n1: Indices of refraction of Medium 1, dimensionless
θ: Angle of incidence, in radian
n2: Indices of refraction of Medium 2, dimensionless
θ: Angle of transimission, in radian
Refractive Index Chart
| Material | Condition | Refractive Index |
|---|---|---|
| Vacuum | 1 (per definition) | |
| Air at standard atmosphere | 1.000277 | |
| Air | Gas at 0 0C, 1 atmosphere | 1.000293 |
| Helium | Gas at 0 0C, 1 atmosphere | 1.000036 |
| Hydrogen | Gas at 0 0C, 1 atmosphere | 1.000132 |
| "Carbon dioxide" | Gas at 0 0C, 1 atmosphere | 1.00045 |
| Benzene | Liquid at 20 0C | 1.501 |
| Carbon disulfide | Liquid at 20 0C | 1.628 |
| Carbon tetrachloride | Liquid at 20 0C | 1.461 |
| Ethanol | Liquid at 20 0C | 1.361 |
| Silicone oil | Liquid at 20 0C | 1.52045 |
| Water | Liquid at 20 0C | 1.3330 |
| Titanium dioxide | Solid at room temperature | 2.496 |
| Diamond | Solid at room temperature | 2.419 |
| Strontium titanate | Solid at room temperature | 2.41 |
| Amber | Solid at room temperature | 1.55 |
| Fused silica | Solid at room temperature | 1.458 |
| Sodium chloride | Solid at room temperature | 1.50 |
| Water ice | 1.31 | |
| Cornea (human) | 1.3375 | |
| Cryolite | 1.338 | |
| Acetone | 1.36 | |
| Ethanol | 1.36 | |
| Polytetrafluoroethylene | 1.35 - 1.38 | |
| Lens (anatomy) (human) | 1.386 - 1.406 | |
| Sylgard 184 | 1.43 | |
| Pyrex | 1.470 | |
| Glycerol | 1.4729 | |
| Acrylic glass | 1.490 - 1.492 | |
| Halite | 1.516 | |
| Crown glass (optics) | 1.50 - 1.54 | |
| Polycarbonate | 1.584 - 1.586 | |
| Poly(methyl methacrylate) | 1.4893 - 1.4899 | |
| PETg | 1.57 | |
| Polyethylene terephthalate (PET) | 1.5750 | |
| Flint glass (pure) | 1.60 - 1.62 | |
| Crown glass (impure) | 1.485 - 1.755 | |
| Bromine | 1.661 | |
| Sapphire | 1.762–1.778 | |
| Flint glass (impure) | 1.523 - 1.925 | |
| Cubic zirconia | 2.15 - 2.18 | |
| Potassium Niobate (KNbO3) | 2.28 | |
| Moissanite | 2.65 - 2.69 | |
| Cinnabar (Mercury sulfide) | 3.02 | |
| Gallium(III) phosphide | 3.5 | |
| Gallium(III) arsenide | 3.927 | |
| Zinc Oxide | 2.4 | |
| Silicon | 4.01 |
Data referenced from WikiPedia
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Angle converter
degree, radian [rad], grad, gon, minute, second, sign, mil, revolution [r], circle, turn, quadrant, right angle, sextant |
