Wxs

Hi, Xavier --

Thank you for providing high-quality images to Wikipedia, but I think that, in your images on the acoustic resonance page, you've got the nodes and anti-nodes reversed. That is, the amplitude should be maximal at the open ends (including the end with the loudspeaker) and zero at the closed end. It would be great if you could update the images. (I'd do it myself, but I don't have the tools.)

Thanks, Fcy

(Don't know why, but I can't seem to log in, here. It tells me "no such user," but of course there is . . . Pro'ly something related to the domains -- I'm registered at wikipedia.org; this page lives at wikimedia.org. Or something like that . . .)