Refractive Index Calculator
Find Refraction Angle (θ2)
Formula
n1 × sin(θ1) = n2 × sin(θ2). Critical angle: θc = arcsin(n2/n1) when n1 > n2.
Frequently Asked Questions
What is Snell's Law?
Snell's Law describes refraction: n1×sin(θ1) = n2×sin(θ2). When light passes from one medium to another, it bends according to the ratio of refractive indices.
What is total internal reflection?
Total internal reflection occurs when light travels from a denser medium to a less dense medium at an angle exceeding the critical angle. All light is reflected back into the denser medium.
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