In the video after the break, [Eduardo] demonstrates his extremely simple setup for using ultrasonic transducers for one-way data communication. Powered by a pair of Arduinos and using transducers ...

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 ...

According to UDOT, the bridge connects northbound I-215 to westbound I-80 and was built in 1985. The ultrasonic technology used a transducer to transmit high-frequency sound waves into ...