Charles Proteus Steinmetz (1865 – 1923) was a mathematician and electrical engineer known as the Wizard of Schenectady. He fostered the development of alternating current that made possible the expansion of the electric power industry in the US, formulating mathematical theories for engineers.
He made ground-breaking discoveries in the understanding of hysteresis (the lag time when magnetizing a ferromagnetic material) that enabled engineers to design better electromagnetic apparatus equipment, especially electric motors for use in industry.
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The Daily Omnivore 