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While the experiments of Professor Bjerknes upon pulsating and rectilinearly vibrating bodies and their influence upon one another illustrate by very close analogies the phenomena of magnetism, those upon circularly vibrating bodies and their mutual influences bear a remarkable analogy to electrical phenomena; and it is a significant fact that exactly as in the case of magnetic illustration, the analogies are direct as regards the phenomena of induction, and inverse in their illustration of direct electrical action.
The table was very richly ornamented, and it was quite delightful to observe at a glance what probably in mathematics, or even in philosophy, it might have been rather troublesome to explain namely, the extraordinary difference which existed between forty or fifty ladies and gentlemen standing in a parallelogram in a drawing-room, and the very same number and the very same faces, rectilinearly seated in the very same form in a dining-room.
I shall therefore essay in this book, to give, in accordance with the principles accepted in the Philosophy of the present day, some clearer and more probable reasons, firstly of these properties of light propagated rectilinearly; secondly of light which is reflected on meeting other bodies.
The true must be essentially the self-reflecting self-contained recurrent, that which secures itself by including its own other and negating it; that makes a spherical system with no loose ends hanging out for foreignness to get a hold upon; that is forever rounded in and closed, not strung along rectilinearly and open at its ends like that universe of simply collective or additive form which Hegel calls the world of the bad infinite, and which is all that empiricism, starting with simply posited single parts and elements, is ever able to attain to.
According to whether the observation is made in a plane normal to the magnetic field or in the same direction, the line transforms itself into a triplet or doublet, and the new lines are polarized rectilinearly or circularly.
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