Home
Browsing Animations: Waves and Sound
2 Animations
beats.iwp
The blue and green waves are superimposed to produce the red wave. When the frequencies are nearly the same, beats are produced. Determine the frequencies of the green and blue waves. Also determine the beat frequency. Note that the x-axis is a time axis. In order to spread out the waves for easier viewing, click on the Window tab above and change the value of X Max to something smaller.
plucked-cord.iwp
This animation represents waves on a string plucked at its center. The yellow line is the actual waveform that would appear. This can be thought of as the superposition of two waves (blue and red) that separate after t = 0, moving in opposite direcitons with equal speed, frequency, and wavelength. At any time, the sum of the blue and red waves is the yellow wave.