. Dental and oral radiography : a text book for students and practitioners of dentistry . REQUISITES OF DENTAL X-RAY LABORATORY 67. 60 £ 68 DENTAL AND ORAL RADIOGRAPHY This assistant anode has a platinum wire ex-tending from it which is sealed into the glass andconnected to a metallic cap on the outside of thetube. The outer terminals of the assistant anodeand the anode are connected by means of a spiralspring. Directly above the anode on the top of the tubethere is a small chamber with an arm extendingfrom it at right angles. This is known as theregulating chamber/ The arm extension of thisch
. Dental and oral radiography : a text book for students and practitioners of dentistry . REQUISITES OF DENTAL X-RAY LABORATORY 67. 60 £ 68 DENTAL AND ORAL RADIOGRAPHY This assistant anode has a platinum wire ex-tending from it which is sealed into the glass andconnected to a metallic cap on the outside of thetube. The outer terminals of the assistant anodeand the anode are connected by means of a spiralspring. Directly above the anode on the top of the tubethere is a small chamber with an arm extendingfrom it at right angles. This is known as theregulating chamber/ The arm extension of thischamber is filled with asbestos impregnated withchemicals, and arranged about or within a metalfrom which a platinum wire extends, is sealed in-to the glass and connected to a metallic cap onthe outside end of the chamber arm. Before being finally sealed, the tube is pumpedto a high degree of vacuum (about 1/100,000 partof an atmosphere), only enough air being left init to afford a path for the -passage of the electriccurrent. Three general types of tubes are made for radi-ographic work, all of which embody the same gen-eral p
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectradiographydental
