Abstract :
Our earliest knowledge of electricity was of the static kind; later came the voltaic cell and direct current. But not until the discovery of alternating or oscillating currents could the phenomenon of electrical resonance make its appearance, Today, as we turn the dials of our radio receivers and “tune in” on the station we want it is recognized how widespread the application of electrical resonance has become. Nevertheless, it seems that few have given thought as to how this important principle came to light and how and when it came into common use.
