I made a ppt animation of stationary waves in sound.. but i don't think its correct.. anyone care to check and see if its proper?? And yea suggest a way i can show the slide animation to you somehow? :P

Question

anonymous · Answer

I tried searching a lot for longitudinal stationary waves .. but didn't find any animation.. all were transverse!!

anonymous · Answer

You can attach the ppt file as an attachment to a post.

anonymous · Answer

but would it animate?

anonymous · Answer

Not locally. I can download the file and it should animate when I open it in PowerPoint.

anonymous · Answer

ok ll do it wait!

anonymous · Answer

here you go!

anonymous · Answer

Looks good to me. Further verification: http://www.walter-fendt.de/ph14e/stlwaves.htm

anonymous · Answer

i dunno.. i  felt something didn't add up.. i wasn't able to match it properly with the transverse

anonymous · Answer

oh yea i checked that :).. but there the compressions and rarefractions are not so dramatic :D.. !!

anonymous · Answer

i mean .. if you see the fundamental mode in both side open.. you ll see at all times the distance between all particles are the same :-/(it decreases.. but all particles at any time are at same distance from others)

anonymous · Answer

hmmm.. comparing i think my animation is right :) thanks anyways!

anonymous · Answer

Why is there a pressure node at displacement antinode and vice versa?

anonymous · Answer

Is it because the spacings between the particle layers do not change much at the antinodes?
We can see it from the animation itself. But how do we prove it?

anonymous · Answer

wait.. first of all m not sure if my animation is right ok? :P

ermm second of all .. nodes don't move much.. antinodes move a lot!!...

anonymous · Answer

Diwakar.. its always like that.. i just realized.. displacement node would always form pressure antinode.. if you look at displacement and pressure curves for any longitudinal waves.. you would see that.. i dunno how you would prove it.. but logically speaking maybe what you said is right.. cause the at the displacement nodes.. you would always have smaller displacements.. and hence the particles come close and go far away..