Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 569
Fig. 366. a striking reed. MOUTHPIECES. 559 The free reed used in the accordion, harmonium, andrarely in pipes, is shown in Fig. 367. The tongue in thiscase swings through the aperture, interruptingthe air current, whose direction is indicated by thearrows. In these instruments the free reed…
Physics
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