. Scientific American Volume 74 Number 14 (April 1896). No. 30 mesh are the coarsest largest are distributed over a pasteboard screencoated with wet celluloid varnish, then finer ones areadded until a smooth, uniform surface results. Thescreen is mounted at the end of a sighting box ofpasteboard, with the prepared surface inside. Theother end of the box is shaped to fit the contour of theface around the eyes. On holding the hand over the end of such a box, ifX rays fall upon it, the surface will fluoresce, except where the shadows due to the Roentgen effect are pro-duced, with the sam
. Scientific American Volume 74 Number 14 (April 1896). No. 30 mesh are the coarsest largest are distributed over a pasteboard screencoated with wet celluloid varnish, then finer ones areadded until a smooth, uniform surface results. Thescreen is mounted at the end of a sighting box ofpasteboard, with the prepared surface inside. Theother end of the box is shaped to fit the contour of theface around the eyes. On holding the hand over the end of such a box, ifX rays fall upon it, the surface will fluoresce, except where the shadows due to the Roentgen effect are pro-duced, with the same perfect detail that is seen in thebest of the Roentgen photographs. One gralm oftungstate per square inch of screen is required for thecoating. The cut (Fig. 3) shows the apparatus now being de-signed for practical use. After what has been said itis easily understood. The Crookes tube is containedin the wooden box. On it the patient rests his handor arm, and the physician, with fluoroscope strappedto his head, observes the condition of the bones. An. ;^. Fig. EXFEBIMENTS WITH X RAYFHENOMENA. induction coil with rotary circuit breaker actuated bya motor; and with Ellhu Thomsons air blast to blowout the arcs, is to be part of the plant. Mr. Edisonfinds that a condenser impairs the effect. The sud-den break produced by the circuit breaker and airblast gives the best effect. The tube with which the writers observations weremade was placed by Mr. Edison upon his air OB trial fiuorescence began to appear as thevacuum increased, and occasional observations weremade with a pocket spectroscope to note the periodof disappearance of the bands. At last the X rays be-gan to be radiated. The fluoroscope was applied tothe eyes, and its base appeared brightly hand was placed over it, and a shadow was pro-duced. Every minute the effect improved until atlast, almost with startling suddenness, the bones ap-peared in perfect outline, the flesh havin
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcivilse, bookyear1896
