This animation allows a viewer to experiment with changing the various constants that define a cosine wave function, and then view the results of their changes on a dynamic wave.
This animation shows the slowed-down response of a regular voltmeter when connected to AC power lines. It is meant to convey the idea to students that the voltage is oscillating and not constant.
This instructional animation allows a student to experiment with the linear combinations of the sine and cosine functions, as the principle components of Fourier series.