Hologram-like device animates objects using ultrasound waves

Unlike Star Wars projection, 3D technology whips polystyrene bead round at high speedIt may not rival the technology found in a galaxy far, far away, but everyone has to start somewhere. Researchers in Southampton have built a device that displays 3D animated objects that can talk and interact with onlookers.A demonstration of the display showed a butterfly flapping its wings, a countdown spelled out by numbers hanging in the air, and a rotating, multicoloured planet Earth. Beyond interactive di