Practical radiography : a handbook for physicians, surgeons, and other users of X-rays (1901)
Isenthal, A. W, Ward, H. Snowden (Henry Snowden), 1865-1911 · London : Published for The Photogram, Ltd. by Dawbarn and Ward, Ltd. · leaf 53
ine should give whenproperly worked ought roughly to equal the radius of therevolving plates. Much, however, depends upon the posi- 42 Practical Radiography tion of the brush neutralizes. The latter must be so bentthat the brushes touch the discs during the whole periodof rotation ; keeping one… … Fig. 14. are at right angles to each other and equidistant from thecollectors. It is of course important to determine the polarity of thedischarging knobs in order to properly connect the tube ;the positive electrode may be identified by the sharp,hissing noise it emits when in the horizontal…
Radiography · X-rays
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