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TEE MOTION PICTURE STORY MAGAZINE
The notion Picture In Science
By L. D. Broughton, N.D.
THE use of the cinematograph to illustrate the development of scientific achievement has been one of the greatest gains of modern times. What the phonograph is to the voice the moving picture is to animate objects, and both reproduce with wonderful exactness and treasure up for coming generations the happenings of today.' #
The most rapidly moving objects are now followed by the unerring eye of the camera, and studies of the scenes are made by reproducing the pictures slowly so that the human eye can see the things which under rapid motion are not clearly discernible. A moving picture of a bullet shot from a rifle was made recently. To the unaided eye there was a puff, the bullet crashed thru a bladder and with a spurt it was all over, and there was nothing to see but the hole where the missile passed thru. But not so to the camera. The reproduced views, moving slowly, showed the bullet impinged against the wall of the bladder, the surface pressed in steadily till it had reached the limit of resistance, and k+he rip, the bullet disappearing in ;, the arjpearance of the point bulletin the other side of the it out to a resisting gave way, and the mward in; its flight. rn that it might have ?tion of some slow[etal thrown by the pting the scientific of nature work in may merely be ision of the un
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viewed by the unassisted eye, but when the camera revealed the sometimes grotesque positions of the horse's limbs as they swing forward and back, it was a revelation, if not a shock. The moving picture of the horse in motion is also of the same character as that which we are accustomed to see when the picture is reproduced at about the speed at which it was taken, but if it is slowed to one-third, the results are interesting, and surprising, perhaps disillusioning.
Efforts have been made to make views of the human heart in motion, but so far not with entire success, the problem being to combine the X-ray with the cinematograph. Some results have been achieved but they have not been a complete success. Such a study opens many interesting possibilities. The human heart in adults averages between seventy and eighty beats a minute ; that is, the four chambers of the heart are filled and emptied in about eight-tenths of a second, during which time there is a distinct period of rest. By careful study the elements of the heart's action have been almost mathematically determined, but only by the most assiduous attention can the ordinary student grasp the deceptive details. The reproduction of the actions of the heart at a pace sufficiently slow for the eye to determine the various portions of the interesting process has in it a field for study that is not reached by any other method. The actions of the heart have been seen in animals which have been operated upon under anaesthesia, and a few cases have occurred where the human heart lias been exposed by accident or in operations upon the chest ; but the circumstances have not been of the character that has aided the student in his work.