Besides the theorems of number, those of geometry also come in as premisses, where the effects take place in space, and involve motion and extension, as in mechanics, optics, acoustics, astronomy.
"A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)"
John Stuart Mill
But the ear is certainly dissatisfied: perhaps my acoustics were out of order, as well as other cephalic organs; but it struck me that Niagara hardly made any noise at all.
"Border and Bastille"
George A. Lawrence
The great Diderot, in a book called "The Nephew of Rameau," referred caustically to Rameau's experiments and theories in acoustics, and added: "He is a philosopher in his way; he thinks only of himself, and the rest of the universe is as the puff of a bellows.
"The Love Affairs of Great Musicians, Volume 1"
Rupert Hughes