Calculate any variable in the Snell's Law equation: n₁sin(θ₁) = n₂sin(θ₂). Select the variable you want to find and enter the other values.
Explore common scenarios to understand how Snell's Law works.
Calculate the angle of refraction when light passes from air into water at an angle.
n₁: 1
θ₁: 30°
n₂: 1.33
Calculate the required angle of incidence in glass to get a specific refraction angle in water.
n₁: 1.52
n₂: 1.33
θ₂: 45°
Light enters an unknown material from water (1.33) at 45° and refracts at 32°. Find the material's refractive index.
n₁: 1.33
θ₁: 45°
θ₂: 32°
Show what happens when light goes from a dense to a less dense medium (glass to air) at a large angle.
n₁: 1.52
θ₁: 45°
n₂: 1