Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
318 ACOUSTICS. Figure 25.—If the plate be confined near one of its angles, andthe bow applied to the middle of one of its sides, the sand Avill bearranged as shown by the dots in the figure. Fig. 25. … The space between the nodal lines is just double the distance betweenthe nodal lines and the edges of tlie plate. The signs plus and minusrepresent opposite phases of vibration. Fig. 26.
Physics · Astronomy
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