A manual of practical medical electricity : the Röntgen rays and Finsen light . Fig. 152.—Broken Radius. (An old injury to wrist, photographedthrough the sphnts, and showing faulty position of fragments.). Fig. 153.—Elbow of Bo\ of 15, showing Ununited Epiphysis. 22—2 340 A Manual of Practical Medical Electricity made use of ; it is cheaper than the platino-cyanides, but isnot so efficient. If the screen be not opaque to ordinary light, it shouldbe made so by covering the reverse side of it with blackpaper. To use the screen, the room should be quite dark, andfor this reason screen work is bes
A manual of practical medical electricity : the Röntgen rays and Finsen light . Fig. 152.—Broken Radius. (An old injury to wrist, photographedthrough the sphnts, and showing faulty position of fragments.). Fig. 153.—Elbow of Bo\ of 15, showing Ununited Epiphysis. 22—2 340 A Manual of Practical Medical Electricity made use of ; it is cheaper than the platino-cyanides, but isnot so efficient. If the screen be not opaque to ordinary light, it shouldbe made so by covering the reverse side of it with blackpaper. To use the screen, the room should be quite dark, andfor this reason screen work is best done at night, when theeye also is more sensitive. In some cases it is advan-tageous to enclose the tube itself in a box, or to cover itwith black paper or velvet in order to shield off the straylight it emits. If the screen be now approached to a working tube, thecoated side of it will be observed to glow with a visiblelight, and the nearer the screen is to the tube, the morebrightly will it be illuminated. If the hand be placedbetween the tube and the screen, the bones will be seenas dark shadows, any metallic object, such as a ring, as astill darker shadow, while the skin will be very fain
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectelectro, bookyear1902
