Radiography and the 'X' rays in practice and theory : with constructional manipulatory details (1898)
Bottone, Selimo Romeo · London ; New York : Whittaker & Co. · leaf 83
the defect of becoming rapidly heated.The form shown at No. 29 is designed with the intentionof concentrating the cathodic rays to a point. This is 70 HADluaUAllIY offccted l>y givinj^an annular form to the cathode, whichis made in the sliape of a llat ring of sheet ahnniniunisurroundin^j; the… … Firt. 23.—JorNTFD Stam> which has heen found to give exceptionally good resultswith fluorescent screens, owing to the large area evenlycovered by the reflected rays, from the large annularsurface, is figured at No. 31. No. 32 represents the tubeof the form originally employed bj- Rontgen in…
Electric radiation · X-rays · Radiography
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