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Updated: May 31, 2025
Talk of the superstition of the Middle Ages, or of the credulity of the more advanced period of rural life; laugh at the Holy Coat of Treves, or groan over the Lady of Salette; deplore the faith in winking pictures, or in a communiqué of the Moniteur; moralize on the superstition which discovers more in the liquefaction of the ichor of St.
The discovery of these properties suggested an explanation of the failure of previous attempts to liquefy air. Air at ordinary low temperatures is in the gaso-liquid condition, and its liquefaction is not possible except when a difference exists between the density of the vapor and that of the liquid greater than it is possible to produce under any conditions that can exist then.
This expansion, nevertheless, causes a fall in the temperature, because the gas in the experiment is not a perfect gas, and, by an ingenious process, the refrigerations produced are made cumulative. Several physicists have proposed to employ a method whereby liquefaction should be obtained by expansion with recuperable external work.
Although there are some, indeed, who deny that there are reservoirs of water lying ready provided out of sight, in the places from whence springs flow, and that when they appear, they merely issue and run out; on the contrary, they say, they are then formed and come into existence for the first time, by the liquefaction of the surrounding matter; and that this change is caused by density and cold, when the moist vapor, by being closely pressed together, becomes fluid.
He took more and more to brooding in the garret; and as more questions presented themselves for solution, he became more anxious to arrive at the solution, and more uneasy as he failed in satisfying himself that he had arrived at it; so that his brain, which needed quiet for the true formation of its substance, as a cooling liquefaction or an evaporating solution for the just formation of its crystals, became in danger of settling into an abnormal arrangement of the cellular deposits.
In the last stage, these exudates undergo liquefaction and are absorbed, or expelled by coughing, in from seven days to two weeks, depending on the extent of the inflammation and the general condition of the animal. In the subacute form the symptoms are mild and may subside within a week. Sometimes abscesses form in the lung.
It can scarcely be doubted that this action consists, in a great degree, of the baking, and occasionally the liquefaction, of rocks, causing them to assume, in some cases a larger, in others a smaller volume than before the application of heat. It consists also in the generation of gases, and their expansion by heat, and the injection of liquid matter into rents formed in superincumbent rocks.
There is a river of ice in Switzerland, which, taking its rise on the hoary summit of Mont Blanc, flows through a sinuous mountain-channel, and terminates its grand career by liquefaction in the vale of Chamouni. A mighty river it is in all respects, and a wonderful one full of interest and mystery and apparent contradiction.
At first blush it seems a very marvellous thing, this liquefaction of substances that under all ordinary conditions are gaseous. It is certainly a little startling to have a cup of clear, water-like liquid offered one, with the assurance that it is nothing but air; still more so to have the same air presented in the form of a white "avalanche snow."
Faraday to expose the hydrate of chlorine in a closed glass tube, it occurred to me that one of three things would happen: that decomposition of water would occur;... or that the chlorine would separate in a fluid state. Davy, moreover, immediately applied the method of self-compressing atmosphere to the liquefaction of muriatic gas.
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