Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 78
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 lengths are the same, to neutralize each other, it isnot so when thewaves have un-equal lengths;for, Eq. (22) Jwas deducedby… … Two unequalwaves cannotneutralize each lkB °ther; Illustration; 70 NATURAL PHILOSOPHY. Explanation; 2 tf _ —, and 2 tf , x in the final value for <£, with different coefficients, whichcould not be made equal to zero at the same time. Thevalues of F, will, to be sure, be the same in any twowaves…
Mechanics · Acoustics · Optics
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