[LAD] Audio Levitation

Dominique Michel dominique.michel at vtxnet.ch
Sat Jan 4 15:57:40 UTC 2014

Le Sat, 4 Jan 2014 13:39:05 +0000,
Fons Adriaensen <fons at linuxaudio.org> a écrit :

> On Sat, Jan 04, 2014 at 09:24:54PM +1100, Patrick Shirkey wrote:
> > Does cavitation have a role to play?
> No idea. If it does that could be rather destructive on some
> materials.

Acoustic, inclusive acoustic levitation, already have uses. The army
use it (at least from the Vietnam war), the chemical and drug industry
use it or have plans to use it, etc.



> What is clear is that acoustic radiation pressure plays a role.
> And that's a subject that has caused a lot of confusion and false
> results throughout the history of acoustics as a science. Some big
> names (including Rayleigh) have burnt their fingers on it, so it's
> not and easy matter. To prime the confusion, there are at least 
> two formulations of acoustic radiation pressure: one from Rayleigh
> (which depends on non-linearity) and one due to Langevin (which
> does not depend on it).
> Ciao,

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