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| | Introduction to Gas Discharge Tubes and Cold Cathode X-ray Tubes (Site not responding. Last check: 2007-10-31) |
 | | A wide variety of gas discharge tubes were in use prior to the discovery (in 1895) of x-rays, e.g., Geissler, Crookes, Hittorf, and Lenard tubes. |
 | | Following the discovery of x-rays, the design of these gas discharge tubes was altered so as to maximize and control their x-ray output. |
 | | In later tube designs (e.g., 1910+), the positions of the anode and anticathode were often reversed so that the anode came in from the side and the anticathode came in from the end of the tube opposite the cathode. |
| www.orau.org /ptp/collection/xraytubes/introduction.htm (1195 words) |
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