Refract a ray (Snell's Law)
- Ryan Hirst
When a ray of light crosses the surface of a translucent medium of different density, its speed and direction change (it is refracted) according to Snell's Law.
NOTES: Constants η_1, η_2 are the Indices of Refraction (IOR) of the two media. The IOR of a substance is determined by observation. For convenience, we take IOR of air = 1. In words, for any two given media, the ratio of sines of the two angles is a constant. In general, two rays result. A fraction of the incident ray is reflected, and a fraction is transmitted into the new medium. ________ Reflection and Refraction 1. Reflect a ray: http://www.geogebratube.org/material/show/id/111895 2. One side is reflective: http://www.geogebratube.org/material/show/id/112443 3. Lamp: http://www.geogebratube.org/material/show/id/112549 →4. Refract a ray These are my self-study materials. Let me know how I can make them more useful to you.