# Refraction

## When light passes from one material to another it can change its angle of travel based on the new material.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Refraction

Students will learn why light refracts when entering different substances like water, glass, etc. and how to calculate the angle of refraction using Snell's Law.
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## Refraction of Light

Considers the refraction of light, Snell’s Law, the index of refraction, and angles of incidence and refraction.
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• Interactive Simulations

## Least Time

Understand why a ray of light passes from one point to another in such a way that the time taken is a minimum which indeed results in the law of refraction.
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• Interactive Simulations

## Diamond Cut

Learn about refraction, reflection, and total internal reflection in the context of a light ray passing into and out of a diamond.
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• PLIX

## Color: Light in a Prism

Refraction Interactive
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• PLIX

## Refraction: Light Entering Water

Refraction Interactive
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• PLIX

## Refraction Slider

Refraction Interactive
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• PLIX

## Band Gap

Refraction Interactive
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• Video

## Snell's Law

Explains Snell's Law and how to solve a standard physics Snell's law problem.
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• Video

## Refraction

Provides a thought experiment to explain refraction.
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• Video

## Rainbows

The physics of rainbows are explained.
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• Video

## Speed of Light in Glass

An explanation of how refraction works.
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• Video

## Why is it Dark at Night?

Real world application of knowledge of scattering and refraction of light.
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• 0
• Critical Thinking

## Refraction Discussion Questions

A list of student-submitted discussion questions for Refraction.
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• Real World Application

## Fish Hunting

Learn how to hunt fish using only a spear.
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• Real World Application

## Light Pipes

Discover how information is transmitted through light.
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• Study Guide