Word: lichtenberg
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Dates: during 1920-1929
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...Heymans. Professor of Theoretical Physics at the Massachusetts Institute of Technology, recently perfected a device capable of measuring intervals as small as one-billionth of a second. His method, first conceived by Prof. P. O. Pederson of the University of Copenhagen, consists of the employment of the so-called "Lichtenberg Figures"-phenomena which become manifest when an electric wave is reflected from an electrode. When two electrodes are placed side by side at a given angle, these Lichtenberg Figures will meet, coincide-the moment of their coincidence depending upon the time (unimaginably brief) required by the waves in their passage...