Radiography and the 'X' rays in practice and theory : with constructional manipulatory details (1898)
Bottone, Selimo Romeo · London ; New York : Whittaker & Co. · leaf 58
Fig. 10.—Completed Condensek. Fig. 11.—Contact-Breakek. § 24. The contact breaker next claims attention. Thegreat point to be aimed at, in order to produce a goodlong spark, is certainly a sufficiently long contact toenable the iron core to be magnetised to the full. Forsmall coils, the ordinary…
Electric radiation · X-rays · Radiography
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