. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. HISTORY OF CHRONOPHOTOGEAPHY. 327 traverses the tilm, /, which carries the positive photographs, and these photot^raphs. magnified l)v the objective, are thrown upon the sci'een. The motion of the tihu at its halts at each tiash are brought about by an apparatus not shown in the figure. It is similar to that of the simple chronophotographic apparatus, with the difference that the positive film, having its ends fastened together to make an e
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. HISTORY OF CHRONOPHOTOGEAPHY. 327 traverses the tilm, /, which carries the positive photographs, and these photot^raphs. magnified l)v the objective, are thrown upon the sci'een. The motion of the tihu at its halts at each tiash are brought about by an apparatus not shown in the figure. It is similar to that of the simple chronophotographic apparatus, with the difference that the positive film, having its ends fastened together to make an endless Ijelt, passes over a series of rollers which stretch it taut. The princi- pal imperfection of the chronophotographic projector was a jerkiness due to imperfect equality of the intervals. y. 11. Kdlsoii's hinetoscope^ —Mr. Edison found a means of e([ualizing the intervals. It was to perforate the sensitive film by a. series of e(juidistant holes and gear it to a pin cylinder. It was impos- sible to procure a kinetoscope to exhibit in the glass case; but every- body, of late years, has seen this remarkable instrument in action. It shows living scenes acted out for more than a minute with absolute precision. In Edison's apparatus the film-ribbon never was arrested; but the images were rendered sharp by the extreme brevity of the illumination, which was only ^-^^j^ of a second. A single spectator, looking through e3'epieces, could see the living pictures of the kinetoscope. No. 12. Lumiere's cmematoijrdpJi^ 1895.—This instrument linally gave the desired result—that is to sa}', the projection on a screen of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Board of Regents; United States National Museum. Report of the U. S. National Museum; Smithsonian Institution. Repo
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