The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent : designed for the use of practitioners and students (1901)
Williams, Francis H. (Francis Henry), 1852-1936 · New York, Macmillan · leaf 68
determined by observing whether or not the spot that has beenrout^hened by the impact of the cathode stream is in Ime with the centre of the cathode; if not, itmust be shaken into line. The following figure illustrates a not uncommon form of construction,which is faulty, in that the target is in… … Fig. 30. Tube of a faulty type of construction. Target in centre of curvature of cathode; wrap-pings of stem are of glass. Double Focus Tubes for Use with an Alternating Current. — With thepowerful currents that may be used with high frequency coils, holes areHable to be melted in the target by the…
Radiography · X-rays
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