The rig uses a 60W ultrasonic transducer, operating at approximately 40 KHz, to generate a standing wave in combination with a reflector – essentially a rigid piece of material off which sound ...

Not so, if you use a pair of specialised ultrasonic transducer arrays to move the air instead! (Video, embedded below) Three banks of thrusters provide a 180 degree steerable net force Details are ...

It also highlights the use of ultrasound for mixing substances and therapeutic purposes, likening it to a form of massage. Keywords sound, sound waves, vibrations, pitch, ultrasound, visualization ...