Snell's Law Calculator

Theory & Logic

Theoretical Background

Physics describes the fundamental mechanism of the universe. The Snell's Law Calculator is an essential tool for understanding Snell's Law Calculator in quantitative terms. Calculate refraction angle.

Mathematical Formulation

The relationship between the variables is governed by the following equation:

Result = (Math.asin((n1 × Math.sin(a1 × π÷180)) ÷ n2)) × (180÷π)

Eq 1.1: Governing Formula

Variable Legend

Symbol	Parameter	Unit
n1	Index 1 (n1)
a1	Angle 1 (θ1)	deg
n2	Index 2 (n2)

Practical Calculation Example

Problem

Calculating the result when:

Index 1 (n1) = 1.4
Angle 1 (θ1) = 15 deg
Index 2 (n2) = 1.5

Solution

Substituting into Eq 1.1:

Result = (Math.asin((1.4 × Math.sin(15 × π÷180)) ÷ 1.5)) × (180÷π)