Page:Elementary lectures on electric discharges, waves and impulses, and other transients (Steinmetz 1911).djvu/9

 with transient phenomena by the inspection of their record on the photographic film of the oscillograph. I would therefore recommend the reading of the following pages as an introduction to the study of “Transient Phenomena,” as the knowledge gained thereby of the physical nature materially assists in the understanding of their mathematical representation, which latter obviously is necessary for their numerical calculation and predetermination.

CHARLES PROTEUS STEINMETZ.