t a musical sound may bemade by a series of taps is illustrated by the buzz, a toy consisting of a disk of tin having notched edges and provided with two holes on diametrically opposite sides of the center, and furnished with an endless cord passing through the holes. The disk is rotated by pulling… … found to be just twice as long as the closed pipe. If, Tf, while.the disk is revolving rapidly, its periphery of paper, the successive taps of the teeth of the disk upon. the paper produce a shrill musical sound, which varies in. pitch according to the speed of the disk. Such a disk mounted on a…
Internet Archive · Public domain (published before 1931). Free to use for anything.
