[quote author=Fu-Kwun Hwang link=topic=909.msg3419#msg3419 date=1233367341]
However, the mathematic calculation is a little more complicate if you want to draw visual representation for Longtinual Wave.
May be you are confused between wave function and visualization of wave motion.
[/quote]
Agreed. indeed i am thinking wave function can generate the Longitudinal visual representation.

looks like it is an un-finish applet.

think i will just make it animate one particular function, rather than simulate any wave function, in order to get the visual representation for Longitudinal wave correct for one function.

what do you think ?