A course of experiments in physical measurement (1897)
Whiting, Harold, d. 1895 · Boston, D.C. Heath and Co. · leaf 413
ht Idlogram-nietres. Evidentlythe efficiency of the tackle as a machine for storingand utilizing energy is only ^^ or 20%. When energy is stored in a machine, part of it islost. When this energy is utilized, part of what isleft is lost. When energy undergoes a series oftransformations, a certain… … Fig. 187. ^ 174. Determination of the EfEdiency of a Water-Motor. ■— (1) To find the work utilizedby a water-motor, the circumference of the driving--wheel (e,Fig. 187) is first measured, then two spring bal- IT 174.] EFFlCIEISfCY. 883 ances, a and S, are connected by a cord {cd) pass-ing round the…
Physics
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