Fields of force; supplementary lectures, applications to meteorology; . Fig. 17. the same motion, it will be subject in these two positions to kineticbuoyancies not exactly equal and not exactly opposite in direc-tion. The motion cannot therefore be strictly periodic. As aconsequence of a feeble dissymmetry there will be superposedupon the oscillation a progressive motion. That the average force which produces this progressive motionis strictly analogous to the force depending upon induced magnetismor electrification by influence, is easily seen. As we have alreadyshown in the preceding lectur
Fields of force; supplementary lectures, applications to meteorology; . Fig. 17. the same motion, it will be subject in these two positions to kineticbuoyancies not exactly equal and not exactly opposite in direc-tion. The motion cannot therefore be strictly periodic. As aconsequence of a feeble dissymmetry there will be superposedupon the oscillation a progressive motion. That the average force which produces this progressive motionis strictly analogous to the force depending upon induced magnetismor electrification by influence, is easily seen. As we have alreadyshown in the preceding lecture, the induced oscillations correspondexactly to the induced states of polarization in the electric or themagnetic field. Further, the forces acting in the two extreme posi- INVESTIGATION OF DYNAMICAL TROPERTIES. 43 tions of oscillation are in the same relation to the geometry of thefield as the forces acting on the poles of the induced magnets; theyare directed along the lines of force of the field, and vary in inten-sity from place to place according to the same la
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