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 111
it, employed it for a totallydifferent purpose. The design of the focus tube at once obviates theabove-mentioned defects of cathode tubes, in so far as thepoint upon which the cathode rays strike is no longer theglass of the tube, but a suitable metal (platinum), whichmay become quite hot without… … Fior. 45.
Radiography · X-rays
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