The Emission and Transmission of Rontgen Rays . ?02 o MASS PER UNIT AR£/\ CfSCRttV- •OSO •0 7& •fOO •125 Fig. 10. Al radiator, 20,000 volts. Absorptions by Equal Masses of Screens.—The interesting feature in the curves offigs. 7, 8, and 9 is the homogeneity manifested when radiator and screen are us examine in turn the way in which the radiations from the metals aluminium,copper, and platinum are dealt with by screens of equal masses. In figs. 10, 11,and 12, log10 (I/I0) is plotted against the mass per unit area of each of the screens. *? Kleeman, Phil. p. 618, Nov., Hac
The Emission and Transmission of Rontgen Rays . ?02 o MASS PER UNIT AR£/\ CfSCRttV- •OSO •0 7& •fOO •125 Fig. 10. Al radiator, 20,000 volts. Absorptions by Equal Masses of Screens.—The interesting feature in the curves offigs. 7, 8, and 9 is the homogeneity manifested when radiator and screen are us examine in turn the way in which the radiations from the metals aluminium,copper, and platinum are dealt with by screens of equal masses. In figs. 10, 11,and 12, log10 (I/I0) is plotted against the mass per unit area of each of the screens. *? Kleeman, Phil. p. 618, Nov., Hackett, Nature, 75, p. 535, April, Dewar and Jones, Proc. Roy. 8oc.,J A, 80, p. 234 (1908). EMISSION AND TRANSMISSION OF RONTGEN RAYS. 143. MASS PER UNIT AREA OF SCREEN- Fig. 11. Copper radiator, 20,000 volts. Thus the slope of the tangent at any point on the curves gives (when multiplied by2*3) \jp for that region, where p is the density of the screen. The curves in eachfigure indicate the comparative effects of the three screens on the one radiation, and LOQ
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectproceed, bookyear1909
