Liquid-air sentence example

liquid-air
  • All remaining impurities, including the excess of oxygen, can then be taken out of the gas by Sir James Dewar's ingenious method of absorption with charcoal cooled in liquid air.
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  • In the absence of liquid air the helium must be purified by the methods employed for argon (q.v.).
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  • It forms a mass of deep blue crystals at the temperature of liquid air.
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  • Shimizu 3 indicate that Steinmetz's formula holds for nickel and annealed cobalt up to B =3000, for cast cobalt and tungsten steel up to B =8000, and for Swedish iron up to B =18,000, the range being in all cases extended at the temperature of liquid air.
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  • The first immersion into liquid air generally produced a permanent decrease of magnetic moment, and there was sometimes a further decrease when the metal was warmed up again; but after a few alternations of temperature the changes of moment.
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  • It is suggested that a permanent magnet might conveniently be " aged " (or brought into a constant condition) by dipping it several times into liquid air.
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  • Steinmetz's formula applies only for very weak inductions when the alloys are at the ordinary temperature, but at the temperature of liquid air it becomes applicable through a wide range of inductions.
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  • Guillaume' the temperature at which the magnetic susceptibility of nickel-steel is recovered is lowered by the presence of chromium; a certain alloy containing chromium was not rendered magnetic even by immersion in liquid air.
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  • 4 No record can be found of experiments with manganese at the temperature of liquid air or hydrogen; probably, however, negative results would not be published.
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  • At the temperature of liquid air (-185°) the application of a field of 21,800 multiplied the resistance of the bismuth no less than 150 times.
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  • Experiments have also been made with a device in which the air-supply is obtained by the evaporation of liquid air absorbed in asbestos.
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  • Now that liquid air is available in many laboratories, it forms an advantageous starting-point in the preparation of argon.
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  • Being less volatile than nitrogen, argon accumulates relatively as liquid air evaporates.
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  • They are non-magnetic or very feebly magnetic. But the critical points of such nickel steel though thus depressed, are not destroyed; and if it is cooled in liquid air below its Ar, it passes to the a state and becomes magnetic.
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  • Ravenel, Macfadyen and Rowland have shown that several bacilli will bear exposure for seven days to the temperature of liquid air (- 192° C. to - 183° C.) and again grow when put into normal conditions.
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  • Rowland and Macfadyen for the same purpose introduced the method of grinding the bacilli in liquid air.
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  • It is the most tenacious of all the ductile metals at ordinary temperatures with the exception of cobalt and nickel; it becomes brittle, however, at the temperature of liquid air.
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  • Moissan (Comp. rend., 1903, 1 37, p. 363) condenses the gas by means of liquid air and fractionates the product.
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  • At the temperature of liquid air (-185°) the application of a field of 21,800 multiplied the resistance of the bismuth no less than 150 times.
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  • Ravenel, Macfadyen and Rowland have shown that several bacilli will bear exposure for seven days to the temperature of liquid air (- 192° C. to - 183° C.) and again grow when put into normal conditions.
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