cted investigators since the time of the firstdiscovery of x-rays, but the practical difficulties of the method haveprevented the realization of the idea until quite recently. Villard, in1899, had already advanced the matter very notably by his device 80 THE RONTGEN RA YS IN MEDICAL WORK of a… … Ammeter Regulating1 resistance Transformer rAAAAAAAAAAAAAArn HHHH Condensers Ltouidresistance ViUard valves-VWV ^vw Condensers •Spark- gap X -ray to-Ire s 3— Fig. 48.—Plan op Gaiffes Transformer Apparatus (after Belot). from the very high electromotive force required for exciting x-raytubes…
X-rays · Radiography
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