Refraction is an important behavior of light that can be used to explain the operation of lenses, prisms, and optical fiber, as well as natural phenomena such as rainbows and mirages. The index of refraction, or...

In this video from the ICT Center, learn about the index of refraction and Snell’s law. Review a simple example of refraction, the speed of light in materials, and the formula for calculating the index of refraction....

Learning the laws and principles of optics is often a challenging task for physics students. The Physics Classroom has developed a great tutorial on Ray Optics to help students understand "how reflection and refraction...

Created by Tom Henderson of the Physics Classroom.com, this item is a chapter in a beginning physics tutorial. It explores the conceptual and mathematical principles governing the bending of waves as they cross the...

Created by Tom Henderson of Physics Classroom.com, this resource offers comprehensive background information on the nature of lenses and their refractive properties. Accompanying ray diagrams provide valuable tools for...