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Calcimator

Snell's Law Calculator

Calculate the refraction angle when light passes between two media using Snell's law: n₁ sin(θ₁) = n₂ sin(θ₂). Includes critical angle and Fresnel reflectance.

Inputs

°

Results

Refraction Angle

48.59

Critical Angle41.81
Reflectance0.06
Transmittance0.94
How to Use This Calculator
  1. Enter Refractive Index n₁, Incident Angle, and Refractive Index n₂.
  2. Review the Refraction Angle result.
  3. Use Critical Angle and Reflectance to inform your decision.
  4. Use the chart to visualize the results and explore different scenarios by adjusting inputs.
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