What we have: Supposed that we have a loudspeaker-based ultrasonic levitator. including a low voltage sine wave generator, an amplifier and a loudspeaker + a metal plate and some clamp-stands +some small polystyrene balls to levitate.
Main idea: This levitator is designed to work at a frequency (or pitch) of around 25 kHz which is above the audible range of humans.
How can we determine how much will be the movement of small polystyrene balls?
Details about other variables:
- The sine wave generator, generates a sine wave in the frequency range 20-30 kHz and an amplitude in the range 1-5 Volts (peak-to-peak).
- The amplifier: 100 Watts, able to amplify old fashioned analogue signals.
- The load speaker: high power tweeter or compression horn tweeter that works fine up to 30 kHz.
- The object: small polystyrene balls with the range 1-2 mm.
- Distance of plate and speaker: 50 mm.
This is very important that the exact movement of matters determined by mathematical formula.