"Percuss" Quotes from Famous Books
 ... will observe a distinct difference in the pitch of the note produced. I will first produce the vowel sound oo and proceed with the vowel sounds to i; you will observe that the pitch rises an octave; that this is due to the changes in the form of the resonator is shown when I percuss the resonator in the position of the different vowel sounds. You will observe that I start the scale of C with oo on f and proceed through a series of vowel sounds as in whispering who, owe, or, on, ah. I rise a fifth from f to c, and the diagram shows the change in ...
— The Brain and the Voice in Speech and Song • F. W. Mott
... suppose Glass to be a medium, which does less resist the pulse of light, and consequently, that most of the Rays incident on it enter into it, and are refracted towards the perpendicular; whereas the air I suppose to be a body that does more resist it, and consequently more are re-percuss'd then do enter it: the same kind of trials have I made, with Crystalline Glass, with drops of fluid bodies, and several other ways, which do all seem to agree very exactly with this Theory. So that from this Principle well establish'd, ...
— Micrographia • Robert Hooke |
