Abstract
Annalen der Physik und Chemie, No. 7, 1878,—Theory and experiment having given different results for the heat-conduction of certain (polyatomic) gases, Prof. Wüllner supposed the reason to be that the values were not comparable, because they related to different temperatures. He shows from experiment that the ratio of the two specific heats varies with the temperature. For those gases whose specific heat at constant pressure does not vary with the temperature, the variation is of about the same order as the divergence of gases from Mariotte's law. For gases, whose specific heat varies with the temperature, the ratio of the specific heats varies in a greater degree, and approximately so that the difference of the specific heats at 0° and 100° is constant. Herr Wüllner finds here an explanation of the discrepancy.—In a lengthy paper Herr Hittorf vindicates the affirmation that “electrolytes are salts,” in reply to Dr. Bleekrode's criticism. We note, also, papers on the energy of reciprocal action, by Herr W. Weber, and on the law of storms, by Herr Schröder.
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SCIENTIFIC SERIALS . Nature 18, 560 (1878). https://doi.org/10.1038/018560a0
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DOI: https://doi.org/10.1038/018560a0