File:American X-ray journal (1899) (14570383037).jpg

Identifier: americanxrayjour5618unse (find matches)
Title: American X-ray journal
Year: 1900 (1900s)
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

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
srs. Oelling andHeinze. We can best describe these byfirst mentioning some of the observationsDr. Rollins has made in connection withx-light, in accordance with which he hasdesigned these tubes. He has shown thatfor practical purposes x-light is a hydro-gen phenomenon, the light originatingin this way: The cathode is a store-house of hydrogen, the particles of whichunder the electric stress are repelled byits concave surface, because, as shown by ish both in amplitude and frequency, forthe particles lose heat rapidly, on ac-count of their small size. As the veloc-ity depends not only upon the degree ofrepulsion between the particles and thecathode, but also upon the attraction ofthe anode, it is evident that the target onwhich they strike should be an anode,otherwise the efficiency of the tube isless. After a tube has been used for awhile its efficiency diminishes. The vac-uum may be lowered by the usual potashregulator or other similar device, butthe capacity for producing x-light is
Text Appearing After Image:
FIG. 1 ike sign. Crookes, they have charges ofThese particles, traveling with high ve-locity toward the anode, are attracted byit because their charges are of oppositesign, and striking suddenlv have theirtemperature raised to a very high de-gree. As a result they vibrate, throwingthe ether into waves unlike those of ordi-nary light, because of greater frequencyand shorter trains, which quickly dimin- only temporarily restored, for water va-por cannot take the place of hydrogenwhich has been used up. To overcomethis difficulty the experimenter namedinvented the intermolecular regulator,which allows hydrogen to be introducedfrom the outside through metal tubingforming part of the walls. The definition of a tube depends uponthe impact area on the target being as 690 THE AMERICAN X-RAY JOURNAL- small as possible. To produce this re-sult the target must not be placed at thecentre of curvature of the cathode, as di-rected by previous experimenters, but al-ways beyond this, as was first don

Note About Images