Walsh, David · London : Baillière, Tindall and Cox · leaf 47
r small straight tube, in which is sealed a platinumwire. On the free end of the latter, and projecting into the globe,is a square piece of platinum foil, fixed at an angle of 45° to thekathode. A branch from this anode end of the tube serves as aholder, and is left open for the purpose of exhaust.… … Fig. 19. the bianodal form of tube (Fig. 19). In any case, the platinumtarget is often spoken of as the anti-kathode. For exhaustion the tube is attached to a pump, and the airwithdrawn to something less than the millionth of an atmo-sphere. With a good pump and with an operator who under-stands…
X-rays · Radiography
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