Principle of Ultrasonic Cleaning - A ultrasonic wave of 46,000 cycles per second is generated through the cleansing liquid. The action of this long iudinal wave causes dielectric pressure to build up, resulting in numberous mirco-vacuum bubbles producing the effect of cavitation. When these bubbles explode, the force of their explosion removes the encrusted dirt, grime or other undesirable substance, even in tiny, hard-to-reach corners. Its efficiency is remarkable.