Principle 18. Mechanical vibration

1. Cause an object to oscillate or vibrate.
   Electric carving knife with vibrating blades
2. Increase its frequency (even up to the ultrasonic).
   Distribute powder with vibration.
3. Use an object's resonant frequency.
   Destroy gall stones or kidney stones using ultrasonic resonance.
4. Use piezoelectric vibrators instead of mechanical ones.
   Quartz crystal oscillations drive high accuracy clocks.
5. Use combined ultrasonic and electromagnetic field oscillations.
   Mixing alloys in an induction furnace