Tractor beam levitates large orbs with sound
A styrofoam particle, 0.6 inches (1.6 cm) in size, levitates in the center of an ultrasonic generator of virtual vortices.(University of Bristol) A brand-new “tractor beam” can levitate large things in midair, utilizing just sound. So far, scientists have actually drifted spheres as large as 0.6 inches (16 millimeters) in size and moved orbs as…