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An animation to illustrate the propagation of sound waves from a moving source. You can modify the wave speed, the source speed and wavelength.
The site explains what happen to electromagnetic waves when it is transmitted and come in contact with a boundary.
This site has good detail on light and sound waves.
This site is rather complex to use but allows users to set up two waves of a certain amplitude, frequency and wavelength and add them together.
A basic site dealing with the speed and wavelength of electromagnetic waves.
Introduction to magnetism, covering the magnetosphere, magnetic field lines and electromagnetic waves.
Animations which demonstrate both types of wave and illustrate the difference between the motion of the wave and the motion of the particles in the medium through which the wave is travelling.
A site from the ThinkQuest competition about light giving brief descriptions of electromagnetic radiation from radio waves and microwaves to x rays and gamma rays.
Picture of EM spectrum, with wavelength and frequency scale. Chart shows pictorial representation of size of wavelength and EM wave sources.
This animation allows the interference of two traveling waves to be explored. They can be made to travel in the same direction or opposite directions.
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