Ultrasonic cavitation
Ultrasonic cavitation is the phenomenon whereby the principle of ultrasonic cleaning can be understood. In a liquid medium the ultrasonic waves, generated by an apposite electronic ultrasounds generator and a special transducer suitably mounted under the bottom of a stainless steel tank, produce compression and vacuum waves at a very high speed, the speed depending on the working frequency of the ultrasounds generator. They normally work at a frequency between 28 and 50 kHz. The pressure and vacuum waves in the liquid cause the phenomenon known as "ultrasonic cavitation".