Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 738
ec, 1922.] High-speed Photography. 719 TIME SCALE. It is perfectly possible to feed the sensitized tape throughthe camera at practically constant speed, so that linear distancesalong the tape are approximately proportional to the time. How-ever, it is easily possible to photograph on the tape… … the path of the light with which the record is photographed.The rotation of this wheel may be governed by the motion of theprongs of an electrically driven tuning fork in such a way thata spoke of the wheel is brought parallel to the axis of the cylin-drical lens at intervals of exactly one…
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