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)
varied at will by changing their tension, upon whichdepends the pitch of the voice. The cavities of the mouth and noseact as resonant tubes. The various organs which constitute the entire vocal apparatus ofman, are the lungs, the trachea, the larynx, the pharynx, the month,and the nose, with their… … lyiusical Sounds. It cannot be expected that more than a few leading principles re-lating to musical sounds, would be explained in an elementary com- ACOUSTICS. 323 pendium for schools. Music and musical instruments are the subjectsof a special treatise. 588. Difference between musical sounds and…
Physics · Astronomy
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