its next neighbour, and soon, leaving at one end of the seriesan unconnected positive terminal, andat the other an unconnected negative terminal. The accumulatorsin common use for medical purposes are made of teak-wood boxeslead lined, and having wooden partitions to separate the cells. Both sets… … Fig. 30.—Two-Celled Accu-mulator (Medical SupplyAssociation). 52 THE RONTGEN RA YS IN MEDICAL WORK the negatives are gray from a surface of spongy lead. In manytypes of cell the plates, or grids, are full of small perforations con-taining the lead peroxide in the one case, and the spongy lead in…
X-rays · Radiography
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