Elements of natural philosophy (Volume 2-3) . B -4 J) C R. Construction of the exponential m curve giving the & action of a z n, will represent in direction molecule on an atom. molecule A Cn on the third atom. Draw a perpendic- and intensity the action of the ELEMENTS OF ACOUSTICS. 15 ular to B Bf through the point s, and take the distance z JR equal to z n, the point Rn will be one point of the exponential curve of the molecule A 0 in the direction B Bf. Other points being determined in the same way, the waved lines of Fig. 7 will indicate the action sought; the ordinates of the branches Ar,
Elements of natural philosophy (Volume 2-3) . B -4 J) C R. Construction of the exponential m curve giving the & action of a z n, will represent in direction molecule on an atom. molecule A Cn on the third atom. Draw a perpendic- and intensity the action of the ELEMENTS OF ACOUSTICS. 15 ular to B Bf through the point s, and take the distance z JR equal to z n, the point Rn will be one point of the exponential curve of the molecule A 0 in the direction B Bf. Other points being determined in the same way, the waved lines of Fig. 7 will indicate the action sought; the ordinates of the branches Ar,A,An\ &c, on one side of B B\ denoting attractions, while those of the branches B\ B\ R\ &c, on the opposite side, denote repulsions. We see that this action differs remarkably from that of Action differs a single atom. The curve has, to be sure, like that of &*[Ciity, omt at o of an atom. single atom, many alternations of attractions and repul-sions, but these alternations become less marked as they .approach the molecule; and instead of
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