Because the acoustics, the resonance changes according as the weight of the water is equal to the law of falling water.
Acoustics that is.
The difficulties of interpretation since the significance of any event followed its occurrence as variably as the acoustic report followed the electrical discharge and of counterestimating against an actual loss by failure to interpret the total sum of possible losses proceeding originally from a successful interpretation.
There are no more uses of "acoustic" in the book.
Show samples from other sources
She plays an acoustic guitar.
Then this guy—he couldn’t have been any older than Kyle—walked out onto the stage wearing a fedora and holding an acoustic guitar.