# Snell’s Law Calculator

## Introduction

Understanding the principles of Snell’s Law is crucial in optics and physics. The law describes the relationship between the angles of incidence and refraction when light passes through different mediums. To simplify calculations, a Snell’s Law calculator proves invaluable. This article provides a user-friendly calculator along with an explanation of how to use it effectively.

## How to Use

To use the Snell’s Law calculator, follow these steps:

- Enter the angle of incidence (i) in degrees.
- Input the refractive index of the first medium (n1).
- Enter the refractive index of the second medium (n2).
- Click the “Calculate” button to obtain the angle of refraction (r).

The calculator employs the accurate formula:

## Formula

The Snell’s Law formula is represented as:

Where:

## Example

Suppose you have light passing from air (*n*1=1) to water (*n*2=1.33). If the angle of incidence is 30 degrees (*i*=30∘), the calculator will help determine the angle of refraction.

## FAQs

**Q: Can I use the calculator for any medium?**

A: Yes, the calculator is versatile and works for different mediums with known refractive indices.

**Q: Why is Snell’s Law important?**

A: Snell’s Law is fundamental for understanding how light changes direction when it passes through different materials.

## Conclusion

In conclusion, the Snell’s Law calculator simplifies the calculation of angles of refraction based on the incident angle and refractive indices of two mediums. This tool proves invaluable in optics, physics, and related fields, providing accurate results effortlessly.