A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 709
. fork must be sufficiently rapid to produce compression in the air,or there will be no wave. The action is similar to that of gun-powder. If this burns slowly in the open, the gases produced areable to pass slowly outwards and there is no explosion. If, however,the powder can be exploded… … Fig. 633,— Crovas disc. The motion of the air. through which a harmonic wave is passingmay be illustrated very well by means of Crovas disc. A numberof circles increasing in radius by small steps are drawn with centresequally spaced round a small circle 123, etc. (Fig. 633). A strip ofcardboard or…
Physics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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