This animation demonstrates several superpositions of simple wave forms.
Basic operation:
Select an animation from the drop down list at the top left.
The several checkboxes have obvious meanings. You can choose to see notes, wave 1, wave 2, and
the sum of both waves. You can choose to run the animation slowly for more careful study.
If you click the 'You'
button at the lower right, then you can drag your mouse across the
diagram horizontally to very slowly and carefully examine the interference. Click the
'Automatic' button to have the computer again run the animation.