Snell's Law Calculator
Calculate the angle of refraction using n₁sin(θ₁) = n₂sin(θ₂). Enter refractive indices and incident angle.
How to Use Snell's Law Calculator
- Enter the refractive index of the first medium (air = 1.0, water = 1.33, glass = 1.5).
- Enter the incident angle in degrees.
- Enter the refractive index of the second medium.
Referencia Rápida
| De | A |
|---|---|
| Air (n=1.0) | Vacuum-like |
| Water (n=1.33) | Light bends toward normal |
| Glass (n=1.5) | Stronger refraction |
| Diamond (n=2.42) | High dispersion |
| Critical angle (glass→air) | 41.8° |
Casos de Uso
- •Optical lens and prism design.
- •Fiber optics engineering.
- •Physics problems on refraction.
Fórmula
n₁ × sin(θ₁) = n₂ × sin(θ₂) → θ₂ = arcsin(n₁·sin(θ₁)/n₂). Total internal reflection occurs if n₁·sin(θ₁)/n₂ > 1.
Preguntas Frecuentes
What is Snell's law?
It describes how light bends when passing between media with different refractive indices.
What is total internal reflection?
When light in a denser medium hits the boundary at an angle above the critical angle, it is completely reflected back.
Is this calculator free?
Yes, all OhMyCalc calculators are completely free.