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- tervals of 1-2,150 of a second. jective. Before making an exposure this mirror is low- circuit, giving two… … Fig. 1.—Bull Chronophotographic Camera with Fig. 3.—Optical Condenser Used with the Bull frequency at coincidences, the Cover Removed. Chronophotographic Camera. are taken is ob- which the views tained. At B (Fig. 2) rather short.and hardly adapted for a synthetic repro- gaps, G the optical…
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