Practical points in the use of X-ray and high-frequency currents (1909) (14570913970)

Identifier: practicalpointsi00judd (find matches)

Title: Practical points in the use of X-ray and high-frequency currents

Year: 1909 (1900s)

Authors: Judd, Aspinwall

Subjects: X-rays Electrotherapeutics Radiography X-Rays Radiography

Publisher: New York : Rebman Company

Contributing Library: Francis A. Countway Library of Medicine

Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

Text Appearing Before Image:

Fig. 32.—Regulating TubesThe above illustrates a tube having a metal tube B sealed into it.When this metal tube is heated to a cherry red it allows gas to passinto the glass bulb, thus lowering its resistance. B can be heatedwith a match or an alcohol flame, great care being taken not to applythe heat too close to the glass, otherwise it is liable to crack.

Text Appearing After Image:

Fig. 33.—The above cut shows the tube connected up in the right waybut showing considerable inverse. A represents a green ring whichappears above the target. The glass in front of the target also showsgreen; an extra green spot also appears at B. flexible joint, so that it can be pushed down so asto come in contact with the negative wire orraised away from it. By passing the current X-Ray Tubes 69 through this wire, a gas is given off from thechemical, which mingles with the gas in theglobe, thus lowering its vacuum. (See Fig. 37,Regulators.)

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1909

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