3 ms·
If we assume they want to hold objects with a size of half a centimeter, a quick calculation shows they are using a sound frequency of 68000Hz. -> 340m/s / 0.0
by deletes 13y ago
If we assume they want to hold objects with a size of half a centimeter, a quick calculation shows they are using a sound frequency of 68000Hz.
-> 340m/s / 0.005m = 68000Hz.
If we limit the frequency to above human hearing range (>20000Hz) then maximum size of objects held in this way would be about 1.7 centimeters.
- MarkPNeyer 13y agoi'd love to hear what it would sound like if you were in the room while this thing levitated something like a golf ball. i bet that becomes a new form of music.
- FreeFull 13y agoYou could probably approximate the sound by taking an ultrasound recording from a room that exists like this right now and slowing it down.
- zerohp 13y agoThe pressure wave would likely destroy your hearing because of the additional energy that would be required to lift a more massive object like a golf ball.
- dustingetz 13y agoMaybe not. The bass at a dubstep show hits your chest really hard, I can imagine it floating a golf ball. You can do some simple DSP to cancel out most of the amplitude too