Show candid camera pictures interior of the stomach and other cavities of the bod body y tiny cameras which can be swallowed by the patient and which carry their own illuminating system have been used for photographing the interior of the stomach wal ter E burton discloses in his arti cle X brays rays A way to better health through photography in m hygeia the health magazine similar methods may be em aloyed for making interior views of other body cavities furthermore other methods have been worked out so that movies can be made of the vocal cords the interior of the bladder of the ear drum and other portions of the body other startling innovations have been recently introduced in the field of photography that will greatly further medical research among them are actual color photographs of the interior of the eye showing the optic nerve ending blood ves sels and other details the pictures were taken through the cryst crystalline allme lens and pupil of the eye the pupil being dilated by drugs in order to provide a greater working area infrared infra red photography has the ability to penetrate the skin and show details ordinarily invisible while an ordinary photograph shows only surface details the in fra red picture makes the ganeous veins stand out almost as clearly as if they were on the sur face infrared infra red waves penetrate the deepest pigment A negro photo graphed with them appears white and although he may seem smooth shaven he is seen to have a distinct beard because the roots of the hairs in his face show motion pictures have been made that show the course of blood flowing through an artery into a capil lary cancer cells that move and drink and blood cells that devour bacteria and other harmful matter time Tim lapse elapse photography was em aloyed in filming the actions of these cells that is the exposures were made at such intervals that when the film is projected at normal speed movements of the cells are stepped up 40 times or more |