ultraschall
Ultraschall (ultrasound) denotes sound waves and the corresponding imaging and measurement techniques that operate at frequencies
Physically, ultrasound relies on piezoelectric transducers that convert electrical impulses into mechanical waves and back. The
Medical use: Diagnostic ultrasound provides real-time visualization of organs and fetus, guidance of procedures, and assessment
Industrial and other uses: In industry ultrasound is used for non-destructive testing, flaw detection in metals
Safety and regulation: Ultrasound is generally non-ionizing and considered safe when used appropriately, but excessive exposure
History: The piezoelectric effect was discovered by the Curie brothers in 1880. Military sonar development in