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"double refraction of light"
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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.
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.
A brief description of how Christmas Lights work from HowStuffWorks.com.
An animated wave diagram showing how an incident wave is refracted for a variety of angles of incidence, and a variety of materials.
A Marvin and Milo activity about light, refraction and lenses. All you need is sticky tape, water, teaspoon and some clear plastic.
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.
Just how realistic is it to try and use lighting as a source of power.
An experiment in mixing different coloured lights.
The light tour will let you discover information about light in the universe and how astronomers make use of light wavelengths.
Optics experiments with Infra-Red light, light bulbs and liquid crystal post cards.
Showing 21 - 30 of 286