Walsh, David · London : Baillière, Tindall and Cox · leaf 48
principle, and one can onlywonder why it has not come into more general use amongpractical workers. He has shown that the kathodal rays areprojected from the aluminium cup-shaped anode in a hollowcone merging into a beam that strikes the anti-kathode. By asliding kathode (which may be adjusted by… … Fig. 20. kinds of work. An excellent tube for high-resistance coils andfor deep tissues is the Penetrator of Messrs. Watson and Co. There yet remain two methods of reducing the resistance in atube. The first, by heating some substance contained in an annex,such as potash or palladium, whereby the…
X-rays · Radiography
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