Laws of Gases

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Arno Press, 1898 - 392 Seiten

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Seite 102 - II.) that the thermal effect is approximately proportional to the difference of pressure on the two sides of the plug. The...
Seite 83 - By these it appears that the cooling effect which the air, as found in the authors' previous experiments, always experiences in passing through the porous plug, varies proportionally to the excess of the pressure of the air on entering the plug above that with which it is allowed to escape. Seven series of experiments, in each of which the air entered the plug at a temperature of about 16° Cent., gave a mean cooling effect of about '0175° Cent., per pound on the square inch, or '27° Cent, per...
Seite 56 - ... had been made in 1844, on the rarefaction and condensation of air, when he remarked^ that " the value of K is unknown ; and as yet no experimental data exist by which it can be determined " (K denoting in his expressions a quantity the vanishing of which for any gas would involve the equivalence in question). In further observing that K is probably small in comparison with the reciprocal of the coefficient of expansion, Mr.
Seite 26 - ... no change of temperature occurs when air is allowed to expand in such a manner as not to develop mechanical power.
Seite 74 - ... degree for the numerical measurement of temperature, we may either call some definite temperature, such as that of melting ice, unity, or any number we please ; or we may choose two definite temperatures, such as that of melting ice and that of saturated vapour of water under the pressure...
Seite 58 - where /= .00082 for air, f= .0064 for carbonic acid, and /= — .00043 for hydrogen. No doubt the deviations from Boyle's law will be somewhat different at the higher temperature (about 15° or 16° Cent.) of the bath in our experiments, probably a little smaller for air and carbonic acid, and possibly greater for hydrogen ; but the preceding formula may express them accurately enough for the rough estimate which we are now attempting. We have, therefore, for air or carbonic acid...
Seite 24 - Like the former receiver, to which it could be connected by a coupling nut, it had a piece D attached, in the centre of which there was a bore \ of an inch diameter, which could be closed perfectly by means of a proper stopcock.

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