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Scientific American, Vol. 19, No. 22 (1868) (1868)

leaf 4

An illustration from Scientific American, Vol. 19, No. 22 (1868), 1868, leaf 4
reading of his paper. still:more heat thanin the previous case, and consequently but the best steam engines obtain only about one tenth of When the indicated power alone is used, it is important to that quantity. Such a result has often been regretted by sci- the degree of cold produced will be in… … power, or that portion available for useful work, may be esti- tent of the losses in the steam engine. It is only the best ex- closed, and at its upper part connected by means of a strong mated. A favorite method is to take an indicator friction dia- amplesthat utilize even one tenth of the heat.…

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