Radiography and the 'X' rays in practice and theory : with constructional manipulatory details (1898)
Bottone, Selimo Romeo · London ; New York : Whittaker & Co. · leaf 62
Fio. 14.—Dori.LE SpkingContact-Bkeakek. THE INDUCTION COIL 49 with these large coils is the commutator^ or currentreverser, which enables us at will to cut off or reversethe direction of the current sent from the battery throughthe primary of the coil, and consequently to stop orreverse the… … Fig. 15.—Commutator. of ebonite, or other good insulator, mounted between twometal standards which can be placed in circuit with thebattery. Each end of the cylinder is fitted with a metalhead of the same diameter, and a tongue of metal inconnection with these heads is let in at opposite sides…
Electric radiation · X-rays · Radiography
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