Take it easy, Gramps! We gotta stay here ’til Evinrude brings us word from the mice.
Sound waves with frequencies just above human hearing can levitate tiny particles and liquid droplets and even move them around, a team of engineers has demonstrated. […]
In the new research, the team […] uses the setup to lift and spin a toothpick. Previously, no one had been able to control objects larger than a few millimeters in diameter.
