Barton, Edwin H. (Edwin Henry), b. 1858 · London, Macmillan and Co., limited · leaf 120
between 01 and #0. In Fig. 34 let AC represent the wave front incident atA upon AB, the plane of separation of the two zones.Draw CB at right angles to AC and lay off BB, makingBB/CB = ujv, where v is the speed of sound. Then byart. 61, CB is the direction of propagation in the lowerzone (see lines… … Fio. 34.—Refraction of Sound by Abrupt Change of Wind Speed. first case. This wavelet is obviously a spherical one ofradius AQ = vt, described about a centre A, distant hori-zontally uj from A. Then from B draw BQ tangential tothe arc representing this sphere, then BQ denotes therefracted wave…
Sound
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