very best job http://xnxx.in.net/xnnx/ xnnx.com "A sample can be pushed into this region of zero acoustic pressure and it will levitate due to net force on it," says Daniele Foresti, an engineer at ETH Zurich, a university in Switzerland. "But how do we try to move this object? Can we think about a system or new concept to move around a standing wave, taking the sample with it?"