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Journal - Franklin Institute of the State of Pennsylvania (1826)

Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 597

An illustration from Journal - Franklin Institute of the State of Pennsylvania, 1826, leaf 597
of an X-ray tube isdependent on the current through it and on the voltage drop 588 J. S. Shearer. [J. F. I. between its terminals. The voltage is a much more importantfactor than the current as the radiation at a given current increasesat least in proportion to the square of the voltage. During… … A series of exposures using the apparatus of Fig. i. One exposure has been cut out toshorten the figure. Four exposures result from ont revolution of the motor. Note the clear spaces between the dark strips showing that current at low voltage is inef-fective. The longest strips were made at 45 k.v.…

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