Improvements in or connected with Means or Apparatus for Producing Radiation by Electricity
21,218. Stearn, C. H., and Topham, C. F. Sept. 24. R÷ntgen ray and like apparatus.-Lamps for producing light or R÷ntgen rays, by electric discharges in exhausted vessels falling on suitable anticathodes, are provided with means for automatically keeping the vacuum in any required condition. For prod...
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