Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 78
ree or moreequal waves; § 61. The same process of combination may be ap-plied to three, four, &c, waves of equal lengths. Thuslet there be the Equations jt d - (o -, V.t—x A,la = — sin 2 * l A x L X ^ J Equations to beused; * d=al Bin [2* I±^ + A] ELEMENTS OF ACOUSTICS. 69 d=*l sin \**:Y±?+Ai\… … ■n Illustration; X A x X Resultant y~ 1 displacement; or 7 W a = —. sm X 2*. - V .1 — X X in which + ^]; The same; a cos A = a cos A + a cos A + a cos A = Xa sin A = a sin J. + a sin J. +. a sin A = 3 « = r y/P+T^ tan J. = -j= • Notation. § 62. Although it is possible for two waves of sound,whose…
Mechanics · Acoustics · Optics
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