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You searched for "double refraction of light"
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Weird rainbows
What are the northern lights?
Why is the sky blue?
What is an LED?
Light pollution - does anyone care?
How do 'invisibility cloaks' work?
The Science of His Dark Materials
Why is Pluto no longer considered a planet?
Science Places
London Science Uncovered
Time Twins
How do 3D films work?
How does auto-tune pitch correction work?
Aunt Sally's video
Where is that draught coming from?
A beginners' guide to exoplanets

Prism refraction
This colourful ray diagram shows the dispersion of white light by an equilateral triangle prism according to Snell's law. The angle of incidence and width of beam are variable.

Refraction and total internal reflection
Applet in two parts - the first a fish's view from under water. In the second the position of the cursor is the source of a light ray. Its path from within the water to an observer appears.

Refraction of light
An animated wave diagram showing how an incident wave is refracted for a variety of angles of incidence, and a variety of materials.

Mini magnifier - Marvin and Milo
A Marvin and Milo activity about light, refraction and lenses. All you need is sticky tape, water, teaspoon and some clear plastic.

Java Applet - reflection and refraction
A java applet that lets you investigate reflection and refraction. One of a series of simple applets that are good for display use in the classroom.


Could lightning keep the lights on?
Just how realistic is it to try and use lighting as a source of power.


The CSE Light Tour
The light tour will let you discover information about light in the universe and how astronomers make use of light wavelengths.


Messing about with Dr Light
Optics experiments with Infra-Red light, light bulbs and liquid crystal post cards.