Meters energy and frequency in ultrasonic and megasonic cleaning tanks used in the semiconductor, wafer, disk drive, flat-panel display, electronics and parts precision cleaning industries.

sonic shockwaves

The 2047U/C combines the features of a standard electronic stethoscope - with those of an ultrasonic (sounds higher in frequency than the ear can hear) detector.

Peter Hoekje, Assistant Professor, Department of Physics, UNI

NASA (USA)

Electronic kit. Hear car brakes, gas leaks or even bats.

Unclassified/commercial mind control technology.

AQUAMATIC, Denmark

United States Patent: 6,146,674

Includes a first and a second transducer coupled together through a coupling medium communicating undulating pressure wave for the transfer of electrical power into an undulating pressure wave communicated into an electrical response. This is a signal that can be converted into useful power for an embedded sensory and actuation control unit. The primary advantage is the transfer of power through a coupling medium without the use of electrical power wires.