Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 46
h takes place in the third. And this, as we haveseen, is measured by the heat received from the fire, diminished by theheat imparted to the refrigerator. The foregoing propositions may be visibly illustrated by means of asimple geometrical figure. If we suppose a body of air, or other… … Fig. I. be the closed extremity of the supposed cylinder, and A7, B7, C7, D7, posi-tions occupied by the movable piston at the end of the successive stagesof expansion and compression which we have supposed the air toundergo. Then let AA7, BB7, CO7, DD7 be perpendiculars proportionalto the pressure…
Machinery · Scientific apparatus and instruments
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