Dependence of magnetic hysteresis upon wave form
A 1909 technical bulletin from the National Bureau of Standards reporting laboratory measurements of magnetic hysteresis under varying alternating-current wave forms, written for physicists and electrical engineers. The plates are line drawings: superimposed sine and distorted flux curves labelled A, B, C, nested concentric hysteresis loops, and a wiring schematic of coils, voltmeters, wattmeter and ammeter.
