Meadowcroft, Wm. H. (William Henry), 1853- · New York : The American Technical Book Co · leaf 130
y of the subject, itbecame a settled conviction in his mind that themost efficient type of vacuum tube for practicaluse in X ray experiments was one capable offocussing the cathodic rays and projecting them,so focussed, in straight lines. As early as January, 1896, Professor Thomsonused in his X… … Fig. 27. end. The rays came to a focus on the platinumand X rays were produced in abundance andsharp definition was obtained by him from thisfocussing tube. This same form of standardCrookes tube was also used early in 1896 hy afew other experimenters, among whom were Mr.Shallenberger and Mr.…
X-rays
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