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Updated: May 28, 2025
They lay sullenly outside his brain, repelled by this dead polarity, and he looked at them languidly, against the dim illumination of the window, with a dull joy that they could not come near him and enter the realm of his thoughts. All this was the fever. In a little time these events became endowed with more palpable bodies which moved.
The tardy development of several of the physical sciences, for example, of optics, electricity, magnetism, and the higher generalizations of chemistry, he ascribes to the fact that mankind had not yet possessed themselves of the Idea of Polarity, that is, the idea of opposite properties in opposite directions.
It was neither taken singly, but it was both. By the combination of the doctrine of diamagnetic polarity with these differential attractions and repulsions, and by paying due regard to the character of the magnetic field, every fact brought to light in the domain of magne-crystallic action received complete explanation.
By a combination of the neutral relay and the polar relay two operators, by manipulating two telegraph keys in the ordinary way, can simultaneously send two messages over one line in the SAME direction with the SAME current, one operator varying its strength and the other operator varying its polarity or direction of flow.
I have already shown that soft iron, when its molecules are allowed perfect freedom by vibration, invariably takes the polarity of the external directing influence, such as that of the earth, and it does so even with greater freedom under the influence of heat.
Unlike the levity-gravity polarity, in which one pole is peripheral and the other point-centred, both Doles of the electrical polarity are point-centred; both are located in physical space, and thereby determine a definite direction within this space. It is this direction which remains a characteristic of both the magnetic and the thermal fields.
How it had become thus charged I cannot pretend to say. I simply record the fact. And this charge, it was evident, was opposite in polarity to that which the ships of the squadron bore. It therefore exerted an attractive influence upon them and thus drew them after it.
Within the living organism the blood achieves the same task with 1J gallons. Very many chemical changes within living organisms are effected by the two polar processes of oxidation and reduction. We have discussed them repeatedly as hieroglyphs of much that occurs in nature by way of polarity.
It cannot so determine the polarity of the molecules with which it is supplied by the arteries as to constrain them to group themselves into a new layer, instead of merely repairing an old one. A crab or a lobster, or a polype's molecules are clever enough for this, a man's not.
It is clear, on the one hand, that three similar magnet poles will all repel one another, while, on the other, of three pulsating bodies, two of them must always attract one another, while a third would be repelled; and, moreover, two similarly pulsating bodies set up around them the same lines of force as two similar magnetic poles, and two oppositely pulsating bodies produce lines of force identically the same as those set up by two magnets of opposite polarity.
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