American X-ray journal (1897) (14570249089)

Identifier: americanxrayjour1418unse (find matches)

Title: American X-ray journal

Year: 1899 (1890s)

Authors:

Subjects: X-Rays Radiography

Publisher: St. Louis : American X-Ray Publishing Co.

Contributing Library: The College of Physicians of Philadelphia Historical Medical Library

Digitizing Sponsor: Open Knowledge Commons and the National Endowment for the Humanities

Text Appearing Before Image:

Fig 81.

Text Appearing After Image:

Fig. 30. (Scale One Quarter.)—Modified A-W-L Roentgen Light Tube. man body ; but this is of no moment,for it is only necessary to use a lower•vacuum, thus making the wave lengthlonger by diminishing the velocity of im-pact. It is practically impossible to getso high a voltage that we can not controlthe wave length by the degree of thevacuum, and when we can get it highenough we can realize the dream of manynow working on this problem and dis-■ card the vacuum tube as an essential inthe production of this light. NO. XXXII—ON THE SIZE OF CATHODES. For Roentgen light to be of much usein medical diagnosis it is necessary tohave a generator of -sufficient: power to distance, and such an apparatus is neces-sarily expensive, costing $1,000 evenwhen made at home. As three feet taxesthe best commercial generators to theirlimit, it is necessary inusing the fluoro-scope to economize power by sendingthe electric surges as slowly as is con-sistent with a steady light. Two hun-dred surges a

medicine x ray american x ray journal 1897 electrical diagrams technical drawing

1897

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