. Archives of physical medicine and rehabilitation . Of /V/St/ l^OirAG£Cs/Vf/TAT/A/e A/PA/tATUS. /MSl/lATIna T/iA/tS BooST£l>. Tig. 1 Tub* SrNCHMNoi/s Contactor 15 High potential measuremext—riebEr We can easily duplicate the filtra-tion accurately by using a filter of likematerial and like thickness. We canlikewise duplicate the current factor ac-curately by a return to the same aver-age milliamperage, especially since thesaturation characteristic of the Coo-lidge tube gives us an almost uniformcurrent during the entire pulse. But thevoltage factor is not so easily dupli-cated. As we have
. Archives of physical medicine and rehabilitation . Of /V/St/ l^OirAG£Cs/Vf/TAT/A/e A/PA/tATUS. /MSl/lATIna T/iA/tS BooST£l>. Tig. 1 Tub* SrNCHMNoi/s Contactor 15 High potential measuremext—riebEr We can easily duplicate the filtra-tion accurately by using a filter of likematerial and like thickness. We canlikewise duplicate the current factor ac-curately by a return to the same aver-age milliamperage, especially since thesaturation characteristic of the Coo-lidge tube gives us an almost uniformcurrent during the entire pulse. But thevoltage factor is not so easily dupli-cated. As we have seen, x-rays only beginto pass through the filter when the volt-age gets high, they increase when it getshigher, and they persist only as longss it stays high. Thus, in estimatingfiltered x-rays, what we really want toknow is how high the voltage gets andhow long it stays high. Now, let us consider the variousmeans of measurement in common useand see how well they enable us toanswer this question. First in order comes the voltmeter,variously termed kilovoltmeter andsoark meter, and connected either inthe primary circuit o
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Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1920, bookyear1920
