Espy, James P. (James Pollard), 1785-1860, author · Boston : Charles C. Little and James Brown · leaf 26
Vlll INTRODUCTION. calculations made on chemical principles. NEPHELESCOPE. … gin to ascend, and that in the inner leg to descend, because the air within receives heat from without, and the difference of level being measured as before, will indicate the number of degrees cooled by a given expansion. Mr. Espy shewed that when dry air is used in the experiment, the temperature…
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