. Elementary and dental radiography / by Howard Riley Raper . Figure 362.— through it, and so through the regulating chamber, to keep the vacuum ofthe tube constant, i. e., to keep it from raising. It will be seen from the foregoing that the idea of the unit issimplification for the operator and indeed as long as all parts are in goodworking order radiographs may be made with it by simply posing thepatient and switching on the current for the proper length of time. Whenit becomes necessary to make some adjustments, however, the operatorwill then feel the need of the information set forth in th
. Elementary and dental radiography / by Howard Riley Raper . Figure 362.— through it, and so through the regulating chamber, to keep the vacuum ofthe tube constant, i. e., to keep it from raising. It will be seen from the foregoing that the idea of the unit issimplification for the operator and indeed as long as all parts are in goodworking order radiographs may be made with it by simply posing thepatient and switching on the current for the proper length of time. Whenit becomes necessary to make some adjustments, however, the operatorwill then feel the need of the information set forth in the first one hundredpages of this book. X-RAY MACHINES 329. Figure 363.—Dental X-ray Unit. Size: IS inches wide, IS inches deep, 40 inches high. 330 APPEXDIX The Hogan silent Roentgen transformer is f\ Altl 7*1 IMA A0 v «... »:-. said, bv its manufacturer, to be a transformer or in-X-Ray machine. - ■ . terrupterless type of X-ray machine which is so con-structed that it rectifies its output current without a synchronous rectify-ing disc or switch. Other manufacturers tell me they may put such anX-ray machine on the market. #»fc„ v »-., *4.* An X-ray outfit consisting of a transformer, a tne x-Kay oumt ■* Admitting of the Coohdge X-ray tube and an automatic time switch Rdiable Pontrol admits °f tne most perfect and reliable control, withthe least effort on the part of the operator. Suchan outfit is expensive. X-RAY TUBES AND THE X-RAYS APPENDIX TO CHAPTER III 331 X-Ray Cubes and the X-Rays Beginners in X-ray work seem unable to reconcile themselves toaccept the statement that the cathode stream passes from cathode totarge
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