A door in cooper science building at ball state university in muncie, in that makes different pitched tones depending on how fast wind is blowing outside it. The pitch can also be shifted by opening and closing the door slightly. (arcv).
A door in cooper science building at ball state university in muncie, in that makes different pitched tones depending on how fast wind is blowing outside it. The pitch can also be shifted by opening and closing the door slightly. (arcv).