An Interferometer Method of Studying the Vibrations of an Oscillating Quartz Plate
An Interferometer Method of Studying the Vibrations of an Oscillating Quartz Plate
复制标题
研究振荡石英板振动的干涉仪方法
DOI：
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发表时间：
1932
期刊：
影响因子：
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通讯作者：
H. Osterberg
中科院分区：
文献类型：
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作者：
H. Osterberg
An expression involving the fringe brightness as a function of the amplitude of vibration is obtained for the case of a Michelson or a similar interferometer in which one of the returning mirrors executes S.H.M. in a direction perpendicular to its plane. A detailed discussion of the application of this expression to the measurement of the amplitude of vibration of a quartz plate is given, together with the observations upon four such plates. The superposition of either the first or second overtone upon the fundamental is also considered.The observed vibrations are predominantly flexural. The experimental results of Doerffler relating to the frequency dependence of the velocity of flexural waves are confirmed and found to apply to X-waves in a Y-cut. There is evidence of low frequency flexural waves propagated diagonally across a quartz plate.An interferometer method is suggested for distinguishing between flexural and longitudinal vibrations.
