mpanying figure(Fig. 58) shows a simple and in-expensive time-keeper for this pur-pose. It is started by pressing thebutton, and goes for six minutes;it then rings a bell and stops. Sand-glasses or stop-watches mayalso be used, but this little instru-ment seems particularly suitable for x-vay… … Fig. 58.—Time-Keeper fob,X-Ray Exposures. CHAPTER VIII THE PRACTICAL WORKING OF THE X-RAYAPPARATUS The coil—The tube—Screen-work—Photography. The proper management of Rontgen-ray work involves attention toa number of details, and demands careful study and long practice.Without experience, the…
X-rays · Radiography
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