Induction coils : how to make, use, and repair them including Ruhmkorff, Tesla, and medical coils, Roentgen radiography, wireless telegraphy, and practical information on primary and secondary battery (1901)
Schneider, Norman H. (Norman Hugh) · New York : Spon & Chamberlain ; London : E. & F.N. Spon · leaf 267
Phosphorus Tube. • Messrs. Siemens and Halske manufac-tured a tube which allowed of a slightvariation of vacuum by using the vapor ofphosphorus. An auxiliary tube containingphosphorus was added to the main tube, andupon heat being applied to it by means ofa lamp, vapor is given off, which… … Fig. yZ ^Roentgen Rays and Radiography. 241 The Crookes Tube. The most satisfactory tube for X-raywork is one where the vacuum is readilyadjustable. Reference to Fig. 73 shows theQueen form. A small bulb, containing achemical which gives off vapor when heatedand reabsorbs it when cooled, is…
Induction coils · Radiography · X-rays
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