Refraction of Light Simulation
Explore Snell’s law and calculate refractive indices for different materials.

About This Simulation
Investigate how light bends when passing from air into transparent materials. Select a material, shine a ray of light, measure the angles of incidence and refraction, and apply Snell’s law to calculate the refractive index — a complete virtual optics experiment.
Why the Offline Version?
- A single standalone file that opens instantly in any browser — no installation, no updates, no compatibility issues
- Works on Windows, Mac, tablets, and Chromebooks
- One file, keeps forever — no server dependency, no expiry
- If you’ve already tried the free online version, you know exactly what you’re getting
- Your file is stamped with your name as proof of license and stored securely for re-download
What You Can Do
- Select from various transparent materials for the semi-disk
- Measure angles of incidence and refraction
- Apply Snell’s law to calculate refractive index
- Compare behavior across different materials
Learning Focus
Reinforces optics concepts and the mathematical relationship between angle and refractive index. Replicates a standard school optics practical without the need for physical equipment.
$2.99 — Your file is stamped with your name as proof of license
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