The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent : designed for the use of practitioners and students (1901)
Williams, Francis H. (Francis Henry), 1852-1936 · New York, Macmillan · leaf 54
f Type of Coil The following cuts will serve to illustrate ways in which a coil ofthis type may be excited. The coil shown in the figures is a Ritchiecoil, and with a current of low voltage (8-10 volts) the usual hammer 1 Electrical Reviezv, July 26, 1899. X-RAY EQUIPMENT 23 break or vibrator is… … Fig. 12. Shows primary battery, Ritchie coil with hammer interrupter, and tube.The place for one of the two multiple spark-gaps is indicated in this and the following cuts by a card on which are the letters SG.
Radiography · X-rays
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