Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 276
on wooden frames. In the drum., the skins are stretched on the ends of a cylindrical box.When one end is struck, it communicates its vibrations to the internalcolumn of air, and the sound is thus considerably strengthened. The cordsstretched against the lower skin strike against it when it… … provided these vibrations are sufficiently intense. Fig. 258 shows a mem-brane vibrating under the influence of the vibrations in the air caused bya sounding bell. Fine sand strewn on the membrane shows the formationof nodal lines just as upon plates. Membranes are eminently fitted for taking up…
Physics
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