Practical electricity .. with questions and answers (1911)
Cleveland armature works, [from old catalog] comp, Lincoln, John C. [from old catalog] · [Cleveland, Ohio, Cleveland armature works] · leaf 69
t4 iDOOoa 60OOO «0000 … 40000 Coooc 1600 B. H. Cnrve Curves showing the same relations graphically that thetable gives numerically. This table vras calculated by measuring the number ofmagnetic lines flowing through an iron ring surroundedby a certain number of turns of wire (see Fig. 27) andcomparing this with the number…
Electricity
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