Fields of force; supplementary lectures, applications to meteorology; . n 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 law in the two kindsof fields, except that the direction of the force is always opposite inthe two cases. Fig. 17, a shows these forces in the two extremepositions of a light body, which oscillates with greate
Fields of force; supplementary lectures, applications to meteorology; . n 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 law in the two kindsof fields, except that the direction of the force is always opposite inthe two cases. Fig. 17, a shows these forces in the two extremepositions of a light body, which oscillates with greater amplitudesthan the fluid, and Fig. 17, 6 shows the corresponding forces actingon the two poles of a magnetic body. Therefore, in the hydro-dynamic field, the light body will be subject to a force oppositelyequivalent to that to which the magnetic body in the correspondingmagnetic field is subject. Fig. 18, a shows the forces acting onthe heavy body in its two extreme positions, the oscillations repre-sented in the figure being those which it makes relatively to the.
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