. The science and practice of dental surgery. Fig. JMk—Metluid of using the Wlii-atsluiiustereoscope. —presuming that the negatives have beenproperly placed in the holders—the views blendinto one, and on pushing the mirror a littlefurther still he will be able to see the viewstereoscopically. He nuist ahvays keep quite. Fig. 937.—Method of viewing stereoscopic-ally withouta stereoscope. the upper portion is not quite so good. Thiscan be remedied by manipulating the screwsattached to the negative holders, so as eitherto raise, lower, or tilt forwards or sideways. Now if the plates are placed in
. The science and practice of dental surgery. Fig. JMk—Metluid of using the Wlii-atsluiiustereoscope. —presuming that the negatives have beenproperly placed in the holders—the views blendinto one, and on pushing the mirror a littlefurther still he will be able to see the viewstereoscopically. He nuist ahvays keep quite. Fig. 937.—Method of viewing stereoscopic-ally withouta stereoscope. the upper portion is not quite so good. Thiscan be remedied by manipulating the screwsattached to the negative holders, so as eitherto raise, lower, or tilt forwards or sideways. Now if the plates are placed in the negativeholders film-side outwards, they are beingviewed as though the observer were standingon the same side of the patient as the plateswere placed. For instance, if the plates wereplaced against the left side of the patient (theX-rays tube would then l)e on the right), thenon placing them in the Wheat stone stereoscopefilm-side outwards, the observer will view themas though standing and facing the patient onthe left side. Tlie same will of course holdgood in each respect for the right side. But if the plates are placed in the stereo-scope film-side inwards, then they are viewedas though the observer were on the same sideas the X-rays tube when the radiograph wastaken. That is to say, if the plates (as
Size: 1257px × 1988px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
