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x-ray tube  a glass vacuum bulb containing two electrodes; electrons are obtained either from gas in the tube or from a heated cathode. When suitable potential is applied, electrons travel at high velocity from cathode to anode, where they are suddenly arrested, giving rise to x-rays.
Standard stationary anode x-ray tube; diagram in longitudinal section.

Standard stationary anode x-ray tube; diagram in longitudinal section.




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