United States. Surgeon-General's Office, American Roentgen Ray Society · New York : Middleditch · leaf 72
ver the switch tooquickly. A little practice will enable you to tell bythe sound of the machine when the speed is about right. Oil. Do not expect a machine to run for long periods with-out lubrication. Follow the makers instructions, if anyare given. Do not use too light an oil. An oil like 3 in… … 10 20 30 40 50 60 70 80 fO 100 M.A. Fig. 28. Relation of X-ray production on two types of control. AC,heostat voltage current line. Voltage ordinates at the left. DE, correspondingK-radiation, quantity ordinates at the right. AB auto transformer chartIne. DF., corresponding quantity line. Quantity…
