ABSTRACT
By chronophotography is meant a method which analyzes motions by means of a series of instantaneous photographs taken at very short and equal intervals of time. Of late years, chronophotography has taken another direction—that of the synthesis of motion. The International Exhibition of 1900 enabled readers to bring together the documents relating to the invention and successive improvements of chronophotography. Four large frames contained photographs resulting from the application of chronophotography to various branches of science. A little later transparent films made their appearance; and these were still more appropriate for the chronophotography of long series of pictures. The principal imperfection of the chronophotographic projector was a jerkiness due to imperfect equality of the intervals. Chronophotography on a fixed plate has furnished the experimental solution of many problems of geometry, mechanics, physics, and physiology that no other method could so readily have solved.
