Snell's Law Calculator
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🔍 Snell's Law Calculator

Calculate refraction angles and indices using Snell's Law

📊 Snell's Law Formula

n₁sin(θ₁) = n₂sin(θ₂)
Where n₁,n₂ are refractive indices, θ₁,θ₂ are incident and refracted angles
Refracted Angle: -
Refractive Index: -
Critical Angle: -
Method Used: -

💡 Tips & Information

  • Light bends toward normal when entering denser medium
  • Light bends away from normal when entering less dense medium
  • Critical angle: θc = arcsin(n₂/n₁) where n₁ > n₂
  • Total internal reflection occurs when θ > θc
  • Air: n ≈ 1.0, Water: n ≈ 1.33, Glass: n ≈ 1.5
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