Rankine, William John Macquorn, 1820-1872, Millar, William J, Tait, Peter Guthrie, 1831-1901 · London, C. Griffin and company · leaf 395
B, and P d V = area VA A C B VBthe power or potential energy given out. 346 ON THERMODYNAMICS. Then, the theorem of this article is expressed as follows :— ,V„ HAlB- I PrfV = QB-QA + SB-SA = AQ + A.S, (2.) being a form of the general equation of the expansive action of heat, inwhich the potential… … Fig. 4. that is to say, the heat which must be absorbed by the substance in expand-ing from the volume VA to the volume VB, in order that the actual heat Qmay be maintained constant, is represented geometrically as follows:Let Q Q be the isothermal curve of the given actual heat Q on thediagram of…