Reflections: 75 years age

Magnetism. “It has been found that the secondary current wave of a closed iron circuit induction coil or transformer, whose primary circuit receives alternating current, is lagged from its theoretical position of 90 degrees behind the primary wave, an additional 90 degrees, so that the phases of the two currents are directly opposed; or the secondary current, working lamps only in its circuit, is one-half a wave length behind the primary, instead of only a quarter wave length, as might have been expected.”