Ok it’s not really extreme, but it is ultrasonic acoustic levitation. Mike is experimenting with ultrasonic transducers and found that if you get the frequency right these large transducers will actually cause lightweight items like foam balls and smoke to be suspended in mid air by the air density pushing and pulling. I don’t have any ideas for practical applications for this at the moment, but it’s really neat to look at.
I wonder if we could scale this experiment up a little bit, add a cool cnc cut foam object and make it a desk toy.
Check out the video.