Researchers demonstrate acoustic levitation of a large sphere
When placed in an acoustic field, small objects experience a net force that can be used to levitate the objects in air. In a new study, researchers have experimentally demonstrated the acoustic levitation of a 50-mm (2-inch) solid polystyrene sphere using ultrasound—acoustic waves that are above the frequency of human hearing. The demonstration is one Read more about Researchers demonstrate acoustic levitation of a large sphere[…]