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This unit introduces students to some general concepts of astronomy. Topics include geocentric versus heliocentric theories of the solar system and how they explain the sun's movements, sidereal days versus solar days,...
This site offers information on the classical doppler effect, the relativistic doppler effect, aberration, and the transverse doppler effect. It also discusses wave fronts, first-order and second order effect,...
This Physlet--one of many Java applets on physics phenomena--shows the waves produced by a moving object whose speed is controlled by the user. The circular waves radiate out, and the observed change in wavelength when...
The wave simulator, created by Paul Falstad, can be used to create a wide range of demos with reflectors, lenses, cavities, and point sources. Common examples such as multiple source and multiple slit interference,...
This web page explains the physics of sonic shock waves. Text and animations describe and illustrate the wavefronts of sound from a moving point source for the cases of motion equal to, less than, and greater than the...
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