Acoustic Remote Cavitation Posted on May 3, 2007 by Robin Yes! A new way to destroy stuff! You send two sound waves and where they intersect the shock waves create a destructive cavitation field. Here’s some more stuff on supercavitation, which says it works on the surface and in the air as well (from a comment in the original article) Robin razor@edgarbv.com https://www.edgarbv.com