Abstract
ALTHOUGH transformers are in constant use for changing alternating currents of electricity from high to low or from low to high potential, exact calculations concerning them have hitherto been looked upon by scientific men as impossible because of the complicated law of magnetization which must subsist in iron. Calculations on the assumption of constant magnetic permeability were thought to be worthless, therefore, although these were the only ones which could be made. Certain graphical methods of representing what occurred were, however, based upon the constant permeability hypothesis, and although such graphical methods could only be useful in illustrative work, they were thought to be accurate enough when great accuracy was impossible. The absence of a theory was supplied by vague statements regarding the effects of hysteresis; and the cycle of magnetization being supposed to be exactly the same, however rapidly performed, and Foucault currents being ignored, it was possible for any writer to get his literature on this subject published and read and commented upon.
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Transformers1. Nature 46, 90 (1892). https://doi.org/10.1038/046090a0
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DOI: https://doi.org/10.1038/046090a0