cillating mirror he produced scopic views. Two sparks are produced in the same on a fixed plate images which were separated by in- of 45 degrees, and located immediately behind the ob- jective. Before making an exposure this mirror is low- tervals of 1-2,150 of a second. circuit, giving two… … Made by Tuning Fig. 1.- -Bull Chronophotographic Camera with Fig. 3.—Optical Condenser Used with the Bull coincidences, the frequency at Fork and Indicat- Cover Removed. Chronophotographic Cam era. which the views are taken is ob- ing Time of Ex- At B (Fig. 2) tained. posure. rather short.and…
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