A Tokyo student along with fellow researchers has managed to float objects in a 3D space, using ultrasound. Yoichi Ochiai, a University of Tokyo graduate, together with Takayuki Hoshi and Jun Rekimoto, have found out the way to levitate light objects and move them around in a 3D space. Even though ultrasound levitation has been possible for nearly 40 years, Ochiai says this is still new. “Nobody...