The London, Edinburgh and Dublin philosophical magazine and journal of science . n. 3. Relation to HelmhoKVs theory of chemical valence. 4. Period of rotation of an electric doublet. 5. Electric doublets in different classes of chemical sub- stances. 6. Molecular couples and gyrostats. 1. Statement of the Theory. Briefly it is this :—That the electric doublets in moleculesexercise mutual directive actions as do magnets, so that thenearer two neighbours approach the more do their electricaxes tend to take the same direction, and therefore on thisaccount they exercise a stronger attraction on on
The London, Edinburgh and Dublin philosophical magazine and journal of science . n. 3. Relation to HelmhoKVs theory of chemical valence. 4. Period of rotation of an electric doublet. 5. Electric doublets in different classes of chemical sub- stances. 6. Molecular couples and gyrostats. 1. Statement of the Theory. Briefly it is this :—That the electric doublets in moleculesexercise mutual directive actions as do magnets, so that thenearer two neighbours approach the more do their electricaxes tend to take the same direction, and therefore on thisaccount they exercise a stronger attraction on one another;and also because attracting forces varying inversely as thefourth power of the distance produce motion which increasestheir strength, there are two causes which make the attractiveforces amongst a number of moving doublets of more dyna-mical importance than the repulsive. To fix ideas we must lookmore closely into the system of forces between two magnets. In Maxwells lElectricity and Magnetism (2nd edit.)art. 387, we have Taits results for the forces of magnets on. magnets translated from quaternion into ordinary A B and C D be two magnets of moments ra2 and ?n2 in 2T 2 628 Mr. W. Sutherland on the different planes with their centres at distance r apart. Throughthe centre of C D draw a b parallel to A B, and let /x12 be thecosine of the angle between C D and a b, and \p \2 the cosineso£ the angles made by A B and C D with r, then the action ofAB on CD consists of forces R, H1? and H2 given by theequations R = 0*i2 — 5\1\2)3m17?22/r4,Hi=X23m1m2/r4, H2 = \l3niim2jr4:; and also of two couples one of which acts in the plane of a band CD with a moment sin (HjH^whmgA*3, where (HiH2)is the angle between Hx and H2 which the couple tendsto increase, while the second couple acts in the plane of Rand H2 and tends to diminish the angle between thesedirections with a moment cos (RH,) sin (RH2) 3m, m2/r3. The more important standard case for our present purpose
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectscience, bookyear1840
