Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 574
FlG. 374. THE VIBEATIOXS OF STEIXGS. 563 a a … nite period of its own. On one side there was a small opentube, b (Fig. 375). designed to fit into the meatus of the ear,and opposite it another opening, a. bywhich the enclosed body of air mightreceive vibrations from without. Whenone ear is stopped and such a resonatorapplied to the other,…
Physics
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