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Updated: May 9, 2025
The opposite principle, the capacity of expansion possessed by water, has brought the steam-engine into being. But water will only expand up to a certain point, while its incompressibility, being a force in a manner negative, is, of necessity, infinite."
But actually, on account of the incompressibility of the nasal cartilages, he has to incline either his or her head to an angle of at least 60 degrees, and the result is that his right eye gazes insanely at the space between her eyebrows, while his left eye is fixed upon some vague spot behind her.
In its normal form the power of water is due, as I have said, to its incompressibility; in the state of vapour, to which it is reduced by heat, its power is due to the counter force of expansion.
Its merely mechanical power is immense, and this is due in great part to its incompressibility; for it is in virtue of this quality alone we can, by means of it, achieve feats not otherwise feasible. How else could we have raised to its sublime height that stupendous bridge which spans the Menai Straits, and which is the wonder of the beholder, as it is the boast of the designer?
First, The Dutch or stamper press, invented in Holland; second, the screw; and, third, the hydraulic: Here the pressure is produced by means of a piston driven up by the force of water, the immense power of which is, in great part, due to its almost total incompressibility. This is by far the most perfect form of press.
These properties of the ether, incompressibility and elastic rigidity, are quite conceivable by themselves; but difficulties of thought appear when we reflect upon another quality which the ether clearly must possess namely, frictionlessness.
In water pressure machines loss does not occur from these causes, on account of the incompressibility of the liquid, but the frictions of the parts are the principal causes of loss of power. It would be advisable to ascertain whether, as regards this point, high or low pressures are the most advantageous.
The theory that they are sensitive to differences of hydrostatic pressure as the fish moves from one depth to another rests on no foundation, since it has yet to be shown how a change of pressure within the limits of the incompressibility of water can produce a sensation in an organ permeated throughout with water.
But now, with the view of ultimately discarding the postulate of rigidity from all our materials, let us suppose some to be absolutely destitute of rigidity, and to possess merely inertia and incompressibility, and mutual impenetrability with reference to the still remaining rigid matter.
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