Air to Water
Angle of Incidence (degrees): 30 degrees; Index of Refraction of Medium 1: 1.0003; Index of Refraction of Medium 2: 1.333
Angle of Refraction (degrees): 22.0370641 degrees
Snell's Law Calculator
Physics0.0(0)
Calculates the angle of refraction of light as it passes from one medium to another, using Snell's Law. This law describes how light bends when it transitions between two different substances with varying indices of refraction.
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How To Use
How to use this calculator
Start with your values, or try a preset.
Step 1
Enter Angle of Incidence (degrees), Index of Refraction of Medium 1, and Index of Refraction of Medium 2 in the units shown.
Step 2
Read Angle of Refraction (degrees) in the results panel. Results update as you change the inputs.
Step 3
Choose a preset to load an example, then adjust the values for your situation.
Worked Examples
Example calculations
See the inputs and their calculated results.
Air to Glass
Angle of Incidence (degrees): 45 degrees; Index of Refraction of Medium 1: 1.0003; Index of Refraction of Medium 2: 1.5
Angle of Refraction (degrees): 28.13469386 degrees
Water to Air
Angle of Incidence (degrees): 20 degrees; Index of Refraction of Medium 1: 1.333; Index of Refraction of Medium 2: 1.0003
Angle of Refraction (degrees): 27.11488217 degrees
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