X rays, an introduction to the study of Röntgen rays (1914)
Kaye, G. W. C. (George William Clarkson), 1880-1941 · London : Longmans, Green · leaf 90
various valve-tubes are more efficient than spark-gaps. These consist of a large aluminium cathode, oftenspiral in form, mounted in an exhausted bulb : the anodeis small, and is contained in a restricted side tube (see p. 33).The design is due to Villard : in Sir Oliver Lodges modi- RECTIFIERS 67… … Anode Iron Rod Copper She&rh Fig. 42.—Section of a Lodge valve-tube. for the reverse current (see p. 69). Owing to the use of aphosphorus method of completing the exhaustion, the Lodgevalve is red in colour (see p. 225). The Lodge tube is saidnot to harden with use, but other types of valves…
X-rays
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
