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 76
ry bulb containing other chemicals. RolHns hasdevised regulators which are operated either by heating the bulb or bypassing an electric current through it, oxygen, nitrogen, or hydrogenbeing thus liberated, according to the chemiaal used. 1 Electrical Rcvieiv, New York, May 12, 1897, p. 226. X-RAY… … Fig. 38. It may be necessary daily to lower the resistance of tubes which are in constant use,and this may be done by heating carefully, by means of a small flame, the end of the regulator seenprojecting from the upper side of the tube at R, or by sending a moderate current through the regu-lator…
Radiography · X-rays
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