VOLTAGE PEAKS AND VALLEYS
February 17, 1949
No, it isn't a moonlight scene in the Grand Canyon, but a picture of a "mountain range" of electric voltage peaks and valleys.
The curves show how voltage is distributed in a specially-wound copper coil through which a simulated lightning stroke is passed.
The wave lasted only 250 millionths of a second, represented in the width of the model. Length of the model traces the location of the impulse in the winding.
PHOTO NO. NB 10574
General News Bureau (ONL)
Original Caption by Science Service