is the storagebattery, D is the induction coil, E is the plateholder which contains a sensitised plate placedabout 3 or 4 inches from F, the Crookes tube. A diagram of a simpler apparatus is given inFig. 20. A is the plate holder with objectslying upon it. B is the Crookes tube, C the high FOR… … figure 21. Fig. 21 is the reproduction of a sketch madeby Mr. Edison to show the disposition of appa-ratus. Continuous current is taken from thelighting mains, and a disruptive current producedby means of a disc with alternate conductingand insulating surfaces on its circumference,the disc being:…
X-rays · Fluorescence
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