Rollins, William Herbert, 1852-1929 · Boston : The University Press · leaf 748
ndent instead of in series.Each secondary will give sufficient voltage for the ultra-violet arc or the electron arc or for exciting derma-ray tubes.One secondary is provided with a Tesla, not shown in thephotograph, the other with a solenoid S. To providespark-gaps for the two independent coils,… … NOTE 179 D —FIGURE 10 —A PORTABLEELECTRON ARC The illustration shows one of the forms of electron arcmentioned in earlier papers. The instrument is attached tothe hinged Faraday ring illustrated in Plates 146, 147, Fig-ures 7 and 8, by flexible wire cables, which are attachedat P and N. The…
X-rays · Phototherapy
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