The art of music is solely a practical one ... The instrument called the syren for counting the number of sound waves produced in a second of time, will yield the same tones in water as in ...
15don MSN
By combining ultrasound with a concept called nonlinear acoustics, you can create sound that stays silent until it reaches a ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback