Tyndall, John, 1820-1893 · New York : Appleton · leaf 180
isrepresented in Fig. 6Q. Thus far plates of glass have been employed held by aclamp at the centre. Plates of metal are still more suitablefor such experiments. Here is a plate of brass, 12 inchessquare, and supported on a suitable stand. Damping it VIBRATIONS OF SQUARE PLATES. 171 with the finger… … The beautiful series of patterns shown on page 172were obtained by Chladni, by damping and exciting squareplates in different ways. It is not only interesting butstartling to see the suddenness with which these sharply-defined figures are formed by the sweep of the bow of askillful experimenter. §…
Sound
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