. American X-ray journal . n in the figuresand in detail in Figs. 4 and 5. The tube shown in Figs. 6 and 7 isof the rotary target type and is the mostpopular and generally useful tube of thepresent day. for the cooled target tube isseldom needed except by a few who havevery powerful generators. When a holehas been melted in the target, a slight jarwill bring a fresh surface into position toreceive the cathode discharge. In this FOCUS OF CATHODE STREAM. FIG. 6.—FULL SIZE BOTARY TARGET OFA-W L TUBE. form the regulator is a piece of platinumtubing sealed into the glass. Hydrogenis introduced by h
. American X-ray journal . n in the figuresand in detail in Figs. 4 and 5. The tube shown in Figs. 6 and 7 isof the rotary target type and is the mostpopular and generally useful tube of thepresent day. for the cooled target tube isseldom needed except by a few who havevery powerful generators. When a holehas been melted in the target, a slight jarwill bring a fresh surface into position toreceive the cathode discharge. In this FOCUS OF CATHODE STREAM. FIG. 6.—FULL SIZE BOTARY TARGET OFA-W L TUBE. form the regulator is a piece of platinumtubing sealed into the glass. Hydrogenis introduced by heating the end of thetube in a very small hydrogen flame,taking- care that the gas before it is burntcomes in contact with the metal, which isto be kept red-hot by the other part ofthe flame. These tubes have come into extensiveuse in many large hospitals and havebeen used entirely by Dr. F. H. \\ nliamsin his classic work on the soft tissues,particularly those of the heart and have been used for more than two. years at the Boston City Hospital, wherethe amount of x-light work exceeds thatof any other hospital in the world, thefirst observations on the heart and lungshaving been made here almost imme-diately after Roentgens discovery wasannounced. The tubes have a certain air of distinc-tion and are powerful, durable and
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Keywords: ., bookcentury1900, bookdecade1900, bookidamericanxray, bookyear1900
