Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 184
hich it is produced.It is found that workmen in a tunnel, in wliich the air isunder pressure, though conversing naturally, appear to eachother to speak in unusually loud tones, while balloonists andmountain climbers have difficulty in making themselvesheard when at great heights. The denser the… … Fig. 205.—Diagram to show that theintensity of sound diminishes withthe distance from the source. (3) The Distance of the Ear from the Sounding Body.Suppose the sound to be radiatingfrom 0 (Fig. 205) as centre, andlet it travel a distance OA in onesecond. The energy will be dis-tributed amongst the…
Physics
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